We record real guitar amplifiers and sell them as Kemper profiles. Alongside that, we write about the design philosophy, history, and craft of guitar tone.https://soundlab.chuuni.net/enhttps://soundlab.chuuni.net/en/articles/nc3faa73ae9e8/https://soundlab.chuuni.net/en/articles/nc3faa73ae9e8/Cynic did not convert from death metal to clean playing. From the start they placed distortion, clean tone, a vocoder, fretless bass and guitar synth inside the same arrangement, designing heaviness not as a total quantity of low end and gain but as the space in which unlike timbres can alternate and pass through. From 1993's Focus, through the fifteen-year gap before Traced in Air, the roughly thirty guitar tracks of Carbon-Based Anatomy, the reduction to two tones on Kindly Bent to Free Us, and Ascension Codes after the loss of two members in 2020 — a gear history read as the distribution of signal inside an arrangement.Thu, 20 Aug 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n527bb6f95558/https://soundlab.chuuni.net/en/articles/n527bb6f95558/Overkill's 1994 album W.F.O. was heard as strange from the day it shipped: the bass sits in front of the guitars. Metallica's ...And Justice for All had done the opposite six years earlier, burying the bass almost entirely. The two records are mirror images — both departing from the standard metal instrument balance, in opposite directions. Should a studio recording correct a band's own weighting, or expose it? An examination that leaves the question open.Fri, 14 Aug 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nf68b9ec88598/https://soundlab.chuuni.net/en/articles/nf68b9ec88598/Tom Morello's distinctiveness is not that he owned little gear. He fixed the amp, the cabinet, the core pedals and the knob positions as invariants — and in exchange turned the pickup selector, the gap between two volume controls, the tremolo, the Whammy, the wah, the delay, the cable and feedback into controls operated in real time. Constraint did not reduce his options. It moved creativity out of product selection and into the body and the writing.Thu, 13 Aug 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n781e13a6d933/https://soundlab.chuuni.net/en/articles/n781e13a6d933/John McLaughlin is not a player who defended one ideal tone. From the loud double-neck of Mahavishnu to the modified acoustic of Shakti, the Synclavier of the 1980s and the MIDI guitars and PRS of recent years, he repeatedly rebuilt the role of the guitar — and the interface his body touches — so that he could play the rhythm, pitch and timbre of whatever music he belonged to. Read not as a pilgrimage through famous instruments, but as a history of interface design that changes the range of music a player can perform.Mon, 10 Aug 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n4210affbb9aa/https://soundlab.chuuni.net/en/articles/n4210affbb9aa/With the same Mustaine / Friedman / Ellefson / Menza lineup, Rust in Peace, Countdown to Extinction and Youthanasia sound like entirely different bands. The size of the middle record was built not from particular amplifiers or excessive layering, but from subtraction — reducing error across writing, performance, frequency, space and editing. A re-reading of a classic record as a production system rather than gear determinism.Wed, 05 Aug 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n16135be6e79a/https://soundlab.chuuni.net/en/articles/n16135be6e79a/Steve Howe's playing sounds slightly off in tempo. Yet the same contour is reproduced live. Rather than rushing or dragging, listen again as a design of time — where in the beat a phrase is allowed to enter. That we cannot tell design from temperament is itself part of what makes Howe compelling.Thu, 30 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n64175031b1b7/https://soundlab.chuuni.net/en/articles/n64175031b1b7/Most guitarists build their sound by choosing tones. What Robert Fripp designed was the mechanism from which sound is born. Frippertronics, built from two tape recorders; the Roland GR-300 replacing the sound source; Soundscapes centred on an Eventide H3000. What stays constant as the gear changes is the attitude of building a system before playing. What does it mean to design a methodology rather than a tone?Sat, 25 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n8a4a4df45826/https://soundlab.chuuni.net/en/articles/n8a4a4df45826/There was a time when "a good amp" needed no qualifier. Fender Twin, Marshall Plexi, Vox AC30, Hiwatt — one amp held one sound, and good-or-bad could be spoken on a single yardstick. That yardstick broke through the multi-channel shift that began in the late 1970s. Once you had to say what an amp was good *for*, evaluation itself changed shape. What did the word "classic" ever point to? A re-reading of forty years of guitar amps as the story of a measuring stick coming apart.Thu, 23 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nd1e76316b16e/https://soundlab.chuuni.net/en/articles/nd1e76316b16e/The Greco GVA CUSTOM is a small 5W tube combo that changes its expression with a single turn of the volume. This Kemper profile was recorded through the amp's built-in speaker. A look inside a combo whose insides belie its looks: 12AX7 preamp, 6V6 power, single channel.Thu, 23 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n15b28bdd78d9/https://soundlab.chuuni.net/en/articles/n15b28bdd78d9/In an era when tubes were treated as the only correct answer, one player defined a decade with a transistor amp. Dimebag Darrell and the Randall RG100ES. His reason for choosing solid state was neither cost nor availability. It was to stop the amplifier from rounding off the instant of the pick. The same choice of solid state came from a demand exactly opposite to Allan Holdsworth's. A story about requirements, not technology, deciding sound.Tue, 21 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n286630a2ca29/https://soundlab.chuuni.net/en/articles/n286630a2ca29/From the '70s to the '90s, guitar amps polished one value: the interaction of picking and distortion — making the attack feel good. In the middle of that, one player chose the exact opposite. Allan Holdsworth. Read his gear from there and it all makes sense: he was designing time, not tone.Mon, 20 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n6d4c989fb5bb/https://soundlab.chuuni.net/en/articles/n6d4c989fb5bb/Soldano solved 'deep but not muddy' in 1987. Where did high gain go next? One clear peak sits in 1994: Peter Diezel's VH4. The theme had shifted — from depth of gain to separation and definition. How to keep every note apart, outlined, inside deep distortion.Sun, 19 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nec4287dc7a06/https://soundlab.chuuni.net/en/articles/nec4287dc7a06/Turn the gain up and, usually, the sound gets worse — muddy, flabby, smeared. Yet some amps get better the more you push them. The classic example is the Soldano SLO-100. What makes the difference isn't the amount of gain but how it's distributed: how it's split across stages, and what gets tidied up between them.Sat, 18 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n14665f0ff50b/https://soundlab.chuuni.net/en/articles/n14665f0ff50b/Seen through industrial design, electric-guitar history has a strange twist. Designs clearly superior as products — stable, playable, serviceable — appeared again and again, every few decades. Yet the market's center is still the wooden solid-body settled in the 1950s. Rational design has been pushed to the margins each time.Mon, 13 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n898b07ff3d0f/https://soundlab.chuuni.net/en/articles/n898b07ff3d0f/In the regionality piece I wrote 'the EL34 pushes the mids forward and breaks up early,' '6L6 has wide headroom and a thick clean.' Almost a staple phrase. But honestly: is 'the EL34's mids' a fact backed by measurement, or long-handed-down received wisdom? The answer isn't cleanly either.Mon, 13 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n8a74ebfeb83a/https://soundlab.chuuni.net/en/articles/n8a74ebfeb83a/"Great amp" and "amp that sold" often don't coincide. And the market summarizes a brand's story into a short phrase. That summary is convenient, but it has a cost: guitar amps that had their own design philosophy yet quietly sank because they didn't fit the summary. Today, two American makers as examples — Ampeg and Peavey.Mon, 13 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n470bb2d0a27c/https://soundlab.chuuni.net/en/articles/n470bb2d0a27c/A summary of the Kemper profile packs Chuuni Sound Lab (CSL) has released. What CSL sells isn't 'the best sound' or 'the one correct answer' — it hands over, in a playable form, how a real amp rang under given conditions. So first, check with your own Kemper and ears via a free sample.Thu, 09 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n0d7eb22c318a/https://soundlab.chuuni.net/en/articles/n0d7eb22c318a/The Carvin Vintage 16 is a small all-tube 1x12 combo: 12AX7 preamp, EL84 power, switchable Pentode 16W / Triode 5W. This Kemper profile was recorded deliberately in Triode through its Celestion Vintage 30. Not loud high gain, but the small, warm voice of a tube amp.Wed, 08 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n6a90d6526731/https://soundlab.chuuni.net/en/articles/n6a90d6526731/The Micro Jugg MJ-3 is a small hybrid amp from Nihon Hammond: solid-state preamp, 6L6GC tube power, 40W. Known for organs, the maker also built guitar amps. This Kemper profile was recorded through the amp's own period Japanese speaker.Wed, 08 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nfc73e251e868/https://soundlab.chuuni.net/en/articles/nfc73e251e868/Amps were long built on the premise of being played loud — a sound completed only by driving the power stage, ringing the speaker, shaking the room. That premise began to crumble when recording at home became normal. This is the story of what that demand brought to design.Wed, 08 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/naad9448190a1/https://soundlab.chuuni.net/en/articles/naad9448190a1/The Randall RH300 G3 Plus is a high-gain solid-state head built for modern metal: tight chugs, lows that don't swell, each note clearing its place. This Kemper profile was captured with an unusual method, its preamp run through a Fryette PS-2A tube power stage into a Marshall 1912.Mon, 06 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n104a94ef1a61/https://soundlab.chuuni.net/en/articles/n104a94ef1a61/Whether there's an effects-loop jack on the back of an amp. Many never use it; it's a plain spec. But the presence of that loop reflects how the amp thinks of what it is — a device complete on its own, or part of a signal path.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n1cae2557a42a/https://soundlab.chuuni.net/en/articles/n1cae2557a42a/Talk about guitar tone and it turns to distortion. But on the opposite side is a philosophy that puts clean in the lead. Not distorting looks like a plain choice. It's actually a demanding one — because with nothing to hide behind, the quality of the playing is laid bare.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n1654c2e61161/https://soundlab.chuuni.net/en/articles/n1654c2e61161/Same amp head, and change the cabinet you connect and the sound changes greatly. Everyone knows this by experience. Without replacing the head, just swapping the cab makes it ring like a different amp. But of the final sound, how much is decided by the head and how much by the cab?Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n3172c1248e7b/https://soundlab.chuuni.net/en/articles/n3172c1248e7b/"In the end it's the hands." A master gets good tone even from a cheap amp, so gear doesn't matter — skill is everything. Half of that is true. But the other half hides the design side of the story. This unpicks the myth from both the playing and the gear.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n35f8c408d33a/https://soundlab.chuuni.net/en/articles/n35f8c408d33a/Newer gear is usually more convenient, easier, higher-performing. Yet some people deliberately choose old sounds. Vintage-mindedness gets dismissed as nostalgia. But there's a real logic to the choice — a performance philosophy. What are you actually choosing when you choose the past?Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n375f1f46024e/https://soundlab.chuuni.net/en/articles/n375f1f46024e/How do you see the cabinet? Just a container to hold speakers? Or part of an instrument that makes the sound? The same wooden box, seen which way. That difference becomes a difference in how you make sound — changing your gear choices and recording decisions.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n3abe2b023c84/https://soundlab.chuuni.net/en/articles/n3abe2b023c84/Talk about an amp's sound and it usually ends at the front panel. But much of what decides an amp's character — raw or composed, crushing or endlessly even — is fixed at design time, inside the circuit, outside the panel. The one that matters most yet gets discussed least is negative feedback.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n55ca405f5471/https://soundlab.chuuni.net/en/articles/n55ca405f5471/Appliances and cars transformed their form over decades. But the guitar amp has barely changed its shape — a black box with knobs in a row. The insides went from tubes to transistors to digital, yet only the exterior stayed still. This reads that 'unchangingness' not as technical lag but as intended conservatism.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n6298ee29d827/https://soundlab.chuuni.net/en/articles/n6298ee29d827/We often talk about sound by tube type. This one's thick, that one's tight, EL34 is like this, 6L6 like that. Not wrong — tubes do have tendencies. But it isn't enough. End at the type number and you drop half the sound. Same tube type, different amp, and the sound differs.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n743b5e187b8e/https://soundlab.chuuni.net/en/articles/n743b5e187b8e/Once, an amp was an instrument you played. You turned knobs, faced that one box; the sound was made on the spot and vanished on the spot. Today's amp wears a different face: recall a preset, switch by footswitch, operate via MIDI, connect by signal to a DAW or modeler. It became close to an interface.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n87bd6c106057/https://soundlab.chuuni.net/en/articles/n87bd6c106057/I've spent a long time recording how amps sound. Lately I'm just as interested in the thinking behind the sound. A relaxed piece about reading an amplifier as a set of decisions, hearing it as a feel in time, and finding the forgotten ones more interesting than the classics.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n823821e8b8a4/https://soundlab.chuuni.net/en/articles/n823821e8b8a4/An amp's signal finally reaches the speaker and becomes vibration of air. For a long time, that was the 'end' of the sound. Load boxes and IRs changed that ending — you could say. But summarize it as 'the speaker variable was simply swapped for digital' and you drop the most interesting part.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n90f40941c95c/https://soundlab.chuuni.net/en/articles/n90f40941c95c/Use the same booster and the sound changes completely with where you place it. Before the amp, or after the distortion — in the amp's loop. In circuit terms it's just a difference of position, but the result is an entirely different thing.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nc809f414454e/https://soundlab.chuuni.net/en/articles/nc809f414454e/For decades, the guitar amp itself has barely changed — tubes, a tone stack, a power stage; the basic structure is as old as ever. Yet the sound players make has changed greatly with each era. Why? Because the control layer that decides the sound has moved, little by little, from inside the amp to outside.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nd4bfd91a6955/https://soundlab.chuuni.net/en/articles/nd4bfd91a6955/Most amps have three knobs: bass, middle, treble — the tone stack, the most basic EQ. They look the same on every amp. But where the EQ sits in the circuit changes what it does entirely. Before the distortion, or after. Plain, but decisive.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/ndb8ea2db4fff/https://soundlab.chuuni.net/en/articles/ndb8ea2db4fff/"American amps are thick, British amps are raw." You meet this rough scheme often. But it isn't about national temperament. Thickness and rawness are an accumulation of the parts used, the circuits chosen, and the environment they were played in — a musical view implemented into an industrial product.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nd27b8b2ef0d8/https://soundlab.chuuni.net/en/articles/nd27b8b2ef0d8/When you mic an amp, the signal always passes a mic preamp — a device that lifts the mic's weak signal to a usable level. Sounds like a plain 'make it louder' box. But a lot of the recorded texture is decided right here.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nf2bf43a5b0d1/https://soundlab.chuuni.net/en/articles/nf2bf43a5b0d1/A spec sheet lists the tube complement — so many preamp tubes, so many power tubes. Plain info in the corner of a catalog; most skip it. But the number of preamp tubes — precisely, the number of gain stages built there — mirrors what distortion the amp tried to make, and how.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nf4c748650eb6/https://soundlab.chuuni.net/en/articles/nf4c748650eb6/In metal, 'tight' gets used for everything. But tight isn't a tonal quality — not thickness or brightness or grit. It's about time: when a note rises, when it stops, how fast it comes back. Tightness points at something in a sound's temporal structure.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nfa50141d3e20/https://soundlab.chuuni.net/en/articles/nfa50141d3e20/Today's amps switch clean and distortion with a switch. An obvious function. But this 'obvious' wasn't there from the start. The idea of covering multiple sounds with one amp was born, and settled, at a certain time. When, and why, did it become so?Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nfafe645f8324/https://soundlab.chuuni.net/en/articles/nfafe645f8324/Today it's obvious that a guitar amp has a gain knob to set 'the amount of distortion,' and often a dedicated drive channel. But it wasn't always so. For a long time distortion wasn't something the amp provided — it was something the player added afterward. This is the story of that shift.Sun, 05 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n27f570193b9c/https://soundlab.chuuni.net/en/articles/n27f570193b9c/GVA_T5_B5_SM57_C_100. At first glance it looks like code. It's actually a map of the recording conditions, laid out in order. Once you can read it, you know what a profile contains before you buy — amp, setting, mic, position, ratio.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n3cf68a082602/https://soundlab.chuuni.net/en/articles/n3cf68a082602/Big amps are aspirational — the wall of 4x12s, the 100-watt push. But dropped into a programmed track, that low end collides and blurs, and you end up cutting it away. In a home mix, a small amp's tidiness beats a big amp's power. That's why CSL's first product is a 5-watt combo.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n548c3c44615b/https://soundlab.chuuni.net/en/articles/n548c3c44615b/For a shop that sells sound, refusing to promise "the best tone" sounds strange. But it's a position CSL holds on purpose. The best changes with the listener, the music, and the room — so it can't be pinned down. What we sell instead is the record of one amp as it actually sounded.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n4ed0b795ded4/https://soundlab.chuuni.net/en/articles/n4ed0b795ded4/Even the same profile, what you should choose changes with the scene. A sound that felt great in home recording buries live. Put it on a stream and it sounds thinner than expected. CSL keeps the mic and position in the name, so you can choose for the scene at the name stage, before auditioning.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n47a5b979961d/https://soundlab.chuuni.net/en/articles/n47a5b979961d/Kemper profiles are many. Even the same amp name sounds completely different with a different maker or capture conditions. So choosing by 'it's a famous amp name' alone can miss. No need to overthink — check three things about yourself before buying.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/na372d89e4b73/https://soundlab.chuuni.net/en/articles/na372d89e4b73/Profiles don't get better the more you collect. Counting free ones, your rig folder hits hundreds fast. But aren't most of them asleep, never once played? Playing beats stacking — the sound improves for certain.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/na6e4cc3e0ef2/https://soundlab.chuuni.net/en/articles/na6e4cc3e0ef2/For a standard classic, it's easy — famous amps are easy to find used, and profiles exist from many makers. But CSL doesn't record that kind of amp. It records the ones not on store shelves, touched by few, vanishing unknown. Here is a new meaning to not owning the real amp.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nde14cde2d519/https://soundlab.chuuni.net/en/articles/nde14cde2d519/CSL's three free samples aren't casually pulled out. All three fix the amp setting — the GVA CUSTOM with Treble and Bass centered, flat. Only the mic is changed. They're a small experiment set for hearing 'what happens when you fix the amp and change only the mic.' So there's a right way to listen.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/ne9ec72b50f7c/https://soundlab.chuuni.net/en/articles/ne9ec72b50f7c/What CSL sells is not a single 'correct' tone. It's the record of one amp, tuned at one moment, as it actually sounded — captured with its conditions. That's why a profile is a starting point for your own tone, not a finished product you drop in.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nf06fa7c1b1f3/https://soundlab.chuuni.net/en/articles/nf06fa7c1b1f3/This article makes it the 100th. It's a milestone, so let me pause and look back. Over 100 articles, what have I written? Lined up, I'd been writing the same thing to a surprising degree: how to keep this sound.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/neb06236ae12a/https://soundlab.chuuni.net/en/articles/neb06236ae12a/When you want to change a sound on the Kemper, most people reach for Gain and EQ first. On a standard profile, that soon hits a strange ceiling — and pulls you away from the amp's character. The reason is simple: a standard profile's EQ is not the real amp's tone stack. That's why CSL records separate settings instead.Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nf2f4ec1e46b3/https://soundlab.chuuni.net/en/articles/nf2f4ec1e46b3/Guitar-amp tone controls have barely changed for a long time — Treble, Middle, Bass, plus Presence at most. These are usually made by a 'passive tone stack.' With bass, the scenery differs: an active-EQ amp isn't rare. Same kind of instrument, yet the EQ thinking differs. Did guitar not need active EQ, or did it just not turn out that way?Sat, 04 Jul 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n423f639ff2de/https://soundlab.chuuni.net/en/articles/n423f639ff2de/The articles have grown. Written one at a time, where the whole is heading may be hard to see from outside. So let me line up the amps recorded so far as a map, by system — an index so that, read from anywhere, what CSL is trying to keep becomes visible.Sat, 27 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n5cd90092db35/https://soundlab.chuuni.net/en/articles/n5cd90092db35/Is Mesa/Boogie over? A bit blunt, but an unavoidable question. The brand itself continues; products are made. Yet in another sense, a certain era did end — the era when, centered on Randall Smith's design philosophy, the tube guitar amp was still 'a machine to be invented.'Fri, 26 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/ne65ec243e764/https://soundlab.chuuni.net/en/articles/ne65ec243e764/Carvin is an American maker that worked mainly by direct sales, so many know the name but have never heard one. The Vintage 16 is its small all-tube 1x12 combo. Why a known-but-unheard amp is worth recording as a Kemper profile.Fri, 26 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n730d80f038d3/https://soundlab.chuuni.net/en/articles/n730d80f038d3/Look back at guitar-amp history and, up to a point, you could roughly imagine what 'the next amp' would look like: more distortion, more channels, more output, more features. The direction of evolution was broadly a single road. That road forked clearly on entering the 2000s.Thu, 25 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nf6044896f3a9/https://soundlab.chuuni.net/en/articles/nf6044896f3a9/Once, a 100W tube head meant 'serious gear.' A big box, a heavy transformer, shaking the rehearsal studio at full power. There was an era when that was the obvious flagship. Now it's different. Far fewer people newly choose a 100W head. So why did the era of the once-standard 100W head end?Wed, 24 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n32bf17f441ae/https://soundlab.chuuni.net/en/articles/n32bf17f441ae/The TriAxis is a variable preamp housing the circuits of successive Mark series in a 1U rack, with modes recallable by MIDI. But what this piece wants to see isn't the TriAxis alone. The TriAxis is only the front stage — a preamp makes the 'raw material' but doesn't decide the sound to the end. The power amp does.Tue, 23 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n4a38f72daf2e/https://soundlab.chuuni.net/en/articles/n4a38f72daf2e/There's a phrase, 'boutique amp.' Hear it and one direction usually comes to mind: small production, high completion, and deep-distorting high-end high gain. But the boutique-ification that advanced in the '90s wasn't only that one direction. At the same time, there was a flow facing the exact opposite — returning to old circuits.Tue, 23 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/na010cf93f52d/https://soundlab.chuuni.net/en/articles/na010cf93f52d/In the '90s, guitar amps had a strong desire to 'make many voices in one box.' Mesa/Boogie's TriAxis and Marshall's 6100 are separate answers to that desire. The aim is nearly the same — hold many voices, from clean to lead, in one box, all in tubes. But the forms that emerged were opposite: the TriAxis a rack, the 6100 a head.Tue, 23 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n33783ba9fb80/https://soundlab.chuuni.net/en/articles/n33783ba9fb80/Guitar-amp history has several forks. One is the moment digital modeling became a realistic option. The Line 6 POD appeared at the end of the 1990s. But what I want to look back at here isn't the POD itself — it's the moment just before it, when amp makers were still trying to answer everything with the tube amp itself.Mon, 22 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nb9ee2962d803/https://soundlab.chuuni.net/en/articles/nb9ee2962d803/1990s guitar amps are big. Heavy. And multi-feature. Line them up again and this era's amps share a direction: enlarge the chassis, raise the output, add channels, add a loop, load MIDI, add a line out. They tried to pack everything possible into one box. Excessive by modern eyes — but at the time, it was the rational answer.Sun, 21 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n6e135cb042db/https://soundlab.chuuni.net/en/articles/n6e135cb042db/The SL-X and Friedman, roughly, face the same direction — both in the lineage of 'distorting the Marshall sound more.' So they're sometimes discussed together as Marshall-style high gain. But ring the two under the same conditions and there's a distance that 'similar' can't settle.Sat, 20 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n9896781493c2/https://soundlab.chuuni.net/en/articles/n9896781493c2/Say 'the Marshall sound' and something comes to mind — the mid push, the slightly raw distortion, that feel of coming forward when turned up. You often hear that tubes support that sound, and that Marshall's tube is the EL34. But the Marshall in your hands isn't always EL34.Fri, 19 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n1d5a342a968d/https://soundlab.chuuni.net/en/articles/n1d5a342a968d/Ask a certain generation of guitarists about rehearsal-studio amps and roughly the same answer comes back: the JC-120 or the JCM900. The memory that those were the only two choices. And that fact of 'what was placed there' still casts a shadow over the verdict on the JCM900.Thu, 18 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n6401975965c1/https://soundlab.chuuni.net/en/articles/n6401975965c1/In 1990s Marshall, there was more than one way to make a high-gain lead sound. Some designed a whole amp as a high-gain unit. Some prepared one high-gain channel inside a multi-feature amp. The JCM900 SL-X and the 6100LM represent those two ideas.Thu, 18 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/ne4254a3d13ac/https://soundlab.chuuni.net/en/articles/ne4254a3d13ac/The JCM900 has the number after the JCM800, so it's easily received as an amp that honestly evolved the JCM800. But looking at the SL-X, that view feels slightly off. The SL-X looks less like Marshall advancing its own history than like an amp answering demands pushing in from outside.Thu, 18 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n14cae0056158/https://soundlab.chuuni.net/en/articles/n14cae0056158/The name JCM900 carries a vaguely awkward impression. Not spoken of as a great, yet not clearly denied either — long left at the ambiguous verdict of 'a not-so-good Marshall.' How accurately does that impression reflect the real amp's sound?Wed, 17 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n32efcc2a36cf/https://soundlab.chuuni.net/en/articles/n32efcc2a36cf/'Even the same model, each unit sounds different.' Hearing this makes some people uneasy — is my unit a good one or a bad one? Which unit's sound is that profile someone recorded? CSL records real amps as Kemper profiles too, so 'which unit, recorded how' is unavoidable. But what CSL records isn't 'this is the best unit' — it's the fact 'under these conditions, this unit rang like this.'Wed, 17 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/na8d15488e3f8/https://soundlab.chuuni.net/en/articles/na8d15488e3f8/The Marshall JCM900 SL-X 2500, a 50W head built in 1994. Discussing this one amp by the three digits 'JCM900' alone feels somehow inaccurate. Under that name, several models with different design directions coexist. Using this amp as an entrance to re-examine where 1990s Marshall was heading.Wed, 17 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/na96d5753c81d/https://soundlab.chuuni.net/en/articles/na96d5753c81d/Using a Kemper, most people first touch the Rig selection. Then Gain, then EQ, then the effects beyond. Input is usually left for last — a plain section placed small at the left edge. But much of why the same profile sounds different from person to person is here.Wed, 17 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/nf282d4817036/https://soundlab.chuuni.net/en/articles/nf282d4817036/Using profiles on a Kemper, you may at some point feel the meaning of the settings changed. The response when turning Gain and EQ moved more 'like that amp' than before. This is a change from the addition of Liquid Profiling. The premise of what a profile records moved a little here.Wed, 17 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n12493439c1df/https://soundlab.chuuni.net/en/articles/n12493439c1df/Looking at a Kemper profile lineup, profiles of the same amp name sometimes split into a 'standard' and a 'Boosted' version. This isn't a mere part-number difference. A judgment — whether to treat a boosted sound as a separate capture, or not make it at all — is made each time.Tue, 16 Jun 2026 00:00:00 GMThttps://soundlab.chuuni.net/en/articles/n8b22321cc4e8/https://soundlab.chuuni.net/en/articles/n8b22321cc4e8/When listing Kemper profiles as products, you sometimes hesitate over what to write. Write only the sonic impression and the buyer has no material to judge. Pack in too much information and what matters stops getting through. CSL decides the items in advance: Amp Type, Gain, Center/Edge, Raw/Boosted, use, and caveats. These six.Tue, 16 Jun 2026 00:00:00 GMT