SuperBlock US

Your Amp. On Your Pedalboard.
Quilter Labs SuperBlock US Guitar Amplifier Head top view
Quilter Labs SuperBlock US Guitar Amplifier Head tilted facing diagonally to the left
Quilter Labs SuperBlock US Guitar Amplifier Head tilted facing away diagonally to the left
Quilter Labs SuperBlock US Guitar Amplifier Head tilted facing away diagonally to the right
Quilter Labs SuperBlock US Guitar Amplifier Head tilted facing diagonally to the right
Quilter Labs SuperBlock US Guitar Amplifier Head bottom view
Quilter Labs SuperBlock US Guitar Amplifier Head tilted view of the left
Quilter Labs SuperBlock US Guitar Amplifier Head tilted view from the right
Quilter Labs SuperBlock US Guitar Amplifier Head rear view of ins and outs

SuperBlock US

25 Watts · 1.35 lbs · 3 Classic Voices · Fits Your Pedalboard

Your amp lives on your pedalboard now.
$319.

Designed by Patrick Quilter — the "Q" in QSC Audio.

You don't need an amp anymore. The SuperBlock US puts three classic American amplifiers'57 Tweed, '61 Blonde, and '65 Blackface — into a 1.35-pound pedal that takes up one double-width slot on your board. Plug into any speaker cab for 25 watts of real amplifier power. Or go direct to the PA via XLR with cab simulation and skip the backline entirely. Your sound engineer will love you.

This isn't modeling. This isn't digital profiling. The SuperBlock US uses the same Quilter Q-Circuit analog power amp technology that drives the Mach 3 and the Tone Block 202 — scaled down to pedal size. The voices don't approximate classic amps. They behave like them — the way the power section responds to your pick, the way the EQ interacts with the gain, the way the limiter feels under your fingers. Plug in a Strat and you'll forget there isn't a tube in the signal chain.

25W Power (24V)
1.35lbs Weight
3 Voices
$319 Price

The '57 Tweed voice delivers mid-forward power and raw grit — the sound that launched rock and roll. '61 Blonde gives you bell-like cleans that growl under gain — the throaty weight of a Bassman pushed to its limit. '65 Blackface is the slightly scooped, velvety sound that defined a generation of studio records from Muscle Shoals to Abbey Road. Three eras. One knob turn.

The Limiter is Quilter's signature tone-shaping tool — it reduces gain just enough to prevent harsh overdrive, then restores gain as the note dies away. The result is sustain without the ugly breakup. Ride the edge of distortion and stay there. Pair it with the Gain knob and the 3-band active EQ and you have more tonal control than most amps twice the price.

Two Cab Simulations plus an FRFR mode on both the XLR Out and headphone output. Go direct to the PA for a gig — your tone is shaped, your cab is simulated, your sound engineer gets a clean balanced signal. Practice at 2 AM through headphones. Record direct into your DAW. The SuperBlock handles all three without an external box.

The FX Loop sits in the signal chain exactly where it should — after the preamp, before the power section. Your delay and reverb (and the built-in reverb) stay clean regardless of how much gain you're running. And when you need a speaker on stage, the SuperBlock pushes 25 watts into any cab from 4 to 16 ohms — louder than you'd think, and louder than most drummers.

Power it with the included PS-24 supply for the full 25 watts. Or run it off a standard 9V pedalboard supply for 1 watt — enough for bedroom practice and recording without waking the house. Two power modes, one pedal.

What players are saying: "I've built my pedalboard around the SuperBlock — it's easier on everyone. I've had it with hauling an amp around only to have sound folks tell me to turn it down." · "Very loud 25W — volume wise same or maybe even more headroom than my now-sold Deluxe Reverb."
$319 Includes PS-24 power supply

THREE AMPS. ONE SWITCH.

The Voice switch isn't a filter. It changes how the entire amplifier circuit behaves — gain structure, midrange response, the way the power section reacts to your pick. Each voice is built from the DNA of a specific era of American amplifier design.

'57 Tweed gives you mid-forward power and raw grit — the sound that put rock and roll on the map. Crank the gain and it breaks up like a small tweed combo pushed past its limits. Back it off and you get that fat, woody clean that country and blues players have chased for decades.

'61 Blonde delivers bell-like cleans with throaty weight under gain. This is the sound of a Bassman at the edge — the growl that happens when you push a clean amp into territory it wasn't designed for, and it sounds incredible.

'65 Blackface is the slightly scooped, velvety high end and piano-like clarity that defined an entire generation of studio records. The sound engineers at Muscle Shoals and Abbey Road reached for this amp because it sat in a mix without being told to.

Three eras. Three circuits. One knob turn. No menus.

KILL THE BACKLINE.

The SuperBlock was designed to end the argument between you and your sound engineer. Two cab simulations plus an FRFR mode on the XLR balanced output mean you can hand FOH a shaped, consistent signal every night — no mic, no bleed, no "can you turn down."

Plug the XLR into the snake. Your tone is done. The sound engineer gets a clean balanced signal with cab simulation baked in. You hear yourself through the monitor. The audience hears exactly what you hear. Every night, every room, every PA.

Need a speaker on stage? The SuperBlock pushes 25 watts into any cab from 4 to 16 ohms. That's louder than you'd think — reviewers consistently compare the headroom to a Fender Deluxe Reverb. You're not giving up stage volume. You're gaining control over it.

Headphone output with cab sim means silent practice at any hour. Record direct into your DAW without an interface. The SuperBlock handles the gig, the session, and the bedroom — all from one pedal slot.

LIVES ON YOUR BOARD.

At 4.25" × 6.5" × 1.5", the SuperBlock takes up one double-width pedal slot. At 1.35 pounds, it weighs less than most overdrive pedals. Your entire amp rig — three classic voices, reverb, EQ, limiter, cab sim, headphone out, FX loop — fits between your tuner and your delay.

Power it with the included PS-24 for the full 25 watts. Or run it off any standard 9V pedalboard supply for 1 watt — enough for bedroom practice and recording without waking the house. Two power modes mean you never need a separate power solution.

The FX Loop sits after the preamp and before the power section — exactly where it should be. Your time-based effects stay clean regardless of gain. The built-in reverb means one less pedal to buy. The 3-band active EQ with boost and cut gives you more tone-shaping than most full-size heads.

Fly date? Throw your pedalboard in a backpack. Commute gig? Take the train. Session call? Walk in with a guitar case and a board. No amp. No cab. No road case. No excuses.

$319 Includes PS-24 power supply
What your amp actually costs you
Tube combo (Deluxe Reverb RI)$1,430
Tube replacement (every 1–3 yrs)$150–$300
Bias adjustment (per retube)$50–$75
Hauling 42 lbs to every gigYour back
"Turn down" arguments with sound engineerYour sanity
Mic, stand, cable for the cabinet$100–$200
5-year cost of the amp you don't need$1,800–$2,200+
SuperBlock US — 3 voices, cab sim, XLR direct, 1.35 lbs$319
Pedalboard amp class
SuperBlock US $319 25W · 1.35 lbs · 3 voices
Terror Stamp $249 20W · 1.1 lbs · 2 voices
BluGuitar AMP1 $1,399 100W · 1.3 lbs · 4 ch
Designed by Patrick Quilter The "Q" in QSC Audio
What $319 gets you
XLR Out + Cab Sim
Headphone + Cab Sim
Effects Loop
Built-in Reverb
25W (24V) / 1W (9V)
Speaker Out (4–16Ω)
Everything included.
PS-24 power supply No tubes — ever No extra gear needed Instant on
Plug into the PA. Play. Go home.
Prefer British voices? SuperBlock UK — $319 AC, AC Top Boost, and JMP voicings — the other side of the Atlantic.

Three Eras.
One Pedal.

Each voice recreates how a specific era of American amplifier responds — the gain structure, the midrange character, the way the power section feels under your pick. Not a simulation. An analog circuit designed to behave the same way.

'57 Tweed Mid-forward, raw grit

The sound that launched rock and roll. Mid-forward punch, raw breakup when pushed, woody warmth when clean. The voice for blues, roots rock, and anything that needs to cut through a band without sounding polished.

'61 Blonde Bell-like cleans, throaty growl

Bell-like cleans that growl under gain — the throaty weight of a Bassman pushed to its limit. A voice that transitions from pristine to aggressive without losing its character. Country players and jazz cats live here.

'65 Blackface Scooped, velvety, studio-ready

Slightly scooped midrange, velvety highs, piano-like clarity. The sound that defined a generation of studio records — from Muscle Shoals to Abbey Road. Sits in a mix without being told to. The ultimate pedal platform voice.

Three rigs. One pedal.
The Gig XLR to the snake. Cab sim on. Monitor up. No amp, no mic, no bleed. Your sound engineer just became your biggest fan.
The Session Direct into your DAW. Cab sim shapes the tone. Switch voices between takes. Three amps, zero setup time, zero mic placement debates.
2 AM 9V power. 1 watt. Headphones on. Full amp tone at whisper volume. Practice, write, dial in presets — without waking anyone.
Controls
Gain Limiter Bass Mid Treble Reverb Master
Voice Switch Cab Sim Switch
Seven knobs. Two switches. No screens. No menus. No firmware updates.
Quilter Labs

How SuperBlock US Compares

25W Pedalboard Amp — $319
Quilter Labs SUPERBLOCK US Orange TERROR STAMP BluGuitar AMP1 MERCURY Strymon IRIDIUM
Price $319 $199 $855 $399
Type Pedalboard amp
(preamp + power amp)
Hybrid amp
(tube pre + SS power)
Pedalboard amp
(Nanotube tech)
Preamp + cab sim
(no power amp)
Speaker Output 25W (4–16Ω) 20W (8/16Ω) 100W
Cannot drive a speaker
Weight 1.35 lbs ~1.1 lbs ~1.3 lbs ~0.75 lbs
Voices / Channels 3 voices
('57 / '61 / '65)
1 voice
(Orange tone)
4 channels
(Clean / Vint / Class / Mod)
3 amps
(Round / Chime / Punch)
Analog Signal Path Full analog Hybrid analog Nanotube analog DSP modeling
EQ 3-band active
(boost & cut)
1 knob
(Shape control)
3-band
+ Pres / Res
3-band
(per amp model)
Reverb Built-in Spring sim
Limiter
Effects Loop Buffered Programmable
XLR Balanced Out With cab sim
(¼" stereo only)
Cab Simulation Modes 2 sims + FRFR 1
(headphone only)

(needs external)
9 IRs
(+ user slots)
Headphone Out With cab sim With cab sim With IRs
Stereo Output
Dual Power Modes 25W / 1W
(20W fixed)
100W / 1W N/A
(no power amp)
9V Pedalboard Power 1W mode
(needs wall supply)

(needs wall supply)
Tube Replacement None — ever 1x ECC83
(every 1–3 yrs, $15–$30)
None None
Speaker Impedance Range 4–16Ω 8/16Ω 4/8/16Ω N/A
Power Supply Included PS-24
(9V supply separate)
MIDI
Patented Technology Quilter Q-Circuit Hybrid valve/SS Nanotube DSP modeling

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Don't take our word for it

★★★★★

This small amp really packs a punch! I’ve put it up against my Orange and Marshall amps and it really holds its own. Such a great size for traveling and amazing saturation for a great gained out tone.

Chris C.
★★★★★

Love it’s lightweight and it is just as good as the tube amp I was using but more practical for travelling!

Ryan F.