30-day trial
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From €55/month with Klarna
CHUCK is a tube amp, audio interface and effects board in one. Built for stage, studio and home.
Tom, Andreas and 152 other guitarists 
play CHUCK.
Genuine E83CC high-voltage tubes for warm, dynamic tone – no digital modeling.
Every voicing is a different analog operating state of the same tube engine. Powered by ATE — Adaptive Tube Engine. No modeling. No profiling. Real tubes, programmable behavior.
What is ATE?
Smooth, funky, full of feel. Your clean tone for warm grooves, shimmering chords and playful funk vibes.
Clear, open, honest. The timeless clean tone with a warm core and subtle twang.
Versatile, vintage, dependable. From clean to crunchy, with compression and rock character.
Stubborn, biting, soulful. A raw, mid-forward tone with just the right edge.
Open, balanced, full of classic-rock energy. Crunchy dynamics with an organic flow.
Focused, gutsy, full of character. VOX-inspired tone with punch.
Sharp, tight, uncompromising. Modern rock tone with razor-sharp precision.
Brutal, deep, relentlessly heavy. Maximum punch with scooped mids and a fat low end.
Fat, jagged, pinned to the max. Power and speed for the biggest wall of sound.
Singing, sleazy, full of drama. Creamy solos, screaming highs, endless sustain.
I've played a lot of amps in my life, but CHUCK beats them all. Light, flexible and that tube tone? Just brutal! Never gigging without it again!
Lukas
Stage. Studio. Home.
Straight into a cab or the PA. Presets by foot. 25W, XLR, MIDI.
Learn more ›
USB audio interface straight into your DAW. 2In/2Out, 48kHz, ASIO.
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Silent practice with headphones and backing tracks. IR sound, AUX, phones.
Learn more ›7 factory presets – power on, pick a preset, start playing.
Crystal clear, warm, breathes with your attack. Nashville studio · Jazz club · Late night session.
Soft, singing, breaking up when you dig in. Texas roadhouse · Chicago blues bar.
Dirty, snotty, loud. Sounds like a smoke-filled rehearsal room. 90s Seattle · Underground.
Punchy, open, that classic cranked-amp sound. Big stage · Stadium rock · 70s arena.
Raw, fat, sustain for days. 80s Sunset Strip · Backstage · Full throttle.
Tight, surgically precise, razor-sharp. Every note lands. Thrash · Downpicking.
Massive, deep, crushingly heavy. Djent · Modern metal · Down-tuned.
From pickup to output. The light pulse runs along the signal path. Filled boxes are always active, outlined boxes are optional. After the WAH, the signal branches into the built-in FX LOOP for external pedals — DRY/WET blends both paths back together.
With the free STUDIO software you get even more out of CHUCK: build presets, manage voicings, firmware updates – all over USB. Your sound, your workflow, no limits.
Newsroom
underdog is at Guitar Summit 2026 (September 25–27, Rosengarten Mannheim): play CHUCK yourself, sound demos and sessions with Dedi B., Björn and Tonio.
Read more →
CHUCK's SPEAKER output delivers up to 25 watts into 4 ohms. You can connect passive guitar cabinets of 4, 8 or 16 ohms —...
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CHUCK fits into a range of setups. The key is using the right output: SPEAKER for a passive cabinet, OUT 1 or OUT 2...
Read more →Order like normal, try it for 30 days. Not convinced? Send it back for free. At checkout you choose how you want to pay.
Order CHUCK, play it for 30 days. Not your thing? Send it back for free. No risk, no fine print.
Order & try it now ›
Play CHUCK live at one of our partner dealers. Plug in, crank it up, decide for yourself.
Find a dealer near you ›
Choose Klarna installments or PayPal at checkout. Pay in easy installments – CHUCK ships right away.
Order now with Klarna ›E83CC
E83CC tube
10
10 Voicings (Amps)
5
5 Outputs
25W
25W power amp
USB
USB Audio
MIDI
MIDI control
3,2 kg
3,2 kg
CHUCK combines the best of both worlds: an analog tube preamp for warm, authentic tone and digital manipulation for maximum flexibility. Add built-in effects, preset storage and a wealth of connections, and CHUCK becomes a true all-rounder.
CHUCK has four effects built in: REVERB, DELAY, CHORUS and WAH. That's everything you need for a flexible, versatile setup.
Yes, absolutely! CHUCK is made for stage and studio alike. Its rugged build stands up to the toughest gigs, and its flexible feature set delivers top tone – live and in the studio.
Yes, you can try CHUCK in person at well-known music stores. On our website you'll find a list of dealers where CHUCK is available.
You pay no shipping in our shop – delivery within the EU and to Switzerland is completely free for you.
You've got 30 days to try CHUCK at your own pace. If it doesn't win you over, just send it back for free.
