Very early access: Dubshift is in alpha. Expect rough edges, and keep your official firmware file so you can go back.
1.1Dubshift 1.1 for the Ampero Mini: free for everyone from 5 November

Now you won't put it down.

Free custom firmware for Hotone Ampero pedals. Patch 1.x adds effects, LFOs, scenes and an XY pad to the stock firmware. Groovebox 2.0 turns the Ampero Mini into a synth, drums, a sequencer and a looper, with your guitar in the mix.

Build 1.1 Meet the Groovebox
Dubshift 2.0 on the Ampero Mini: the synth edit page: oscillator, filter, envelope and glide graphs above a keyboard. Dubshift 2.0 on the Ampero Mini: twelve drum pads from bass drum to maracas. Dubshift 2.0 on the Ampero Mini: the step grid with drum lanes and a synth lane. Dubshift 2.0 on the Ampero Mini: the mixer: four tracks with faders, mute and solo. Dubshift 2.0 on the Ampero Mini: delay and reverb sends for four tracks.

Dubshift 2.0 on the Ampero Mini. Screens rendered from the firmware image.

New · Dubshift 1.1 for the Ampero Mini

The XY pad, rebuilt

The stock-based line gets its biggest update since 1.0. Same pedal, same presets, more of it under your fingers.

  1. 01

    Pick any knob from a grid

    Tap X or Y and the pad shows the blocks of your patch, then the knobs of the one you tap, with names and values. One more tap and it is on the pad. Every patch remembers its own.

  2. 02

    Scenes glide across Sync

    When an effect is synced in one scene and free in the next, its rate now sweeps into the new range instead of jumping.

  3. 03

    Three new models

    Uni-Vibe on MOD, a Synth that plays a drone or a pattern under your guitar on FX1/FX2, and a Tape Echo with wow, flutter and age on DLY. Ten new effects on the Mini in all.

  4. 04

    The 1.0 rough edges, fixed

    Loop Sync no longer jumps half a loop or falls behind after a preset load; Sustainer lets go on Hold → Follow; Opto 2A Mode 50 is Limit; Pitch Parrot stays in range on the pad.

How it works

Ten minutes, no installer

  1. Get the official file

    Download the firmware for your pedal from Hotone's support page, the same file you'd use for a normal update.

  2. Build it here

    Drop it into the builder. It is checked and patched inside your browser; nothing is uploaded and there is no account.

  3. Flash it

    Flash the result with Hotone's editor like any update. On the Mini you can also flash straight from Chrome or Edge.
  • Free
  • Nothing uploaded
  • Presets keep working on 1.x
  • Going back = flash the official file

Two branches

Pick how far you go

Both are free, both build in your browser from the official Hotone file, and either way you can flash the stock firmware back.

Mini 1.1 · Stomp 1.0

Patch

Ampero Mini · Ampero II Stomp
  • The stock firmware with everything it already has, plus more.
  • Ten new effects on the Mini: granular, freeze, tape echo, a synth and more.
  • LFOs with a step sequencer, scenes, an XY pad.
  • Your own drum patterns and a looper locked to them.
Build 1.1 → Mini · 2.0

Groovebox

Ampero Mini
  • Our own firmware, from the screen to the sound engine.
  • A 303-style synth, 12 synthesized 808 / 727 drums.
  • A 64-step sequencer with p-locks and 20 grooves.
  • A 4-clip looper, delay and reverb, 4 LFOs into anything.
  • Multitouch keys and pads.
See 2.0 →

Inside 2.0

A whole studio in a guitar pedal

The SYNTH ARP page: arpeggiator on and latched, a chord held on the keyboard.

Synth

A 303 that edits like an instrument

Saw or square into a resonant filter, accent and glide, an arpeggiator with latch.

 The DRUMS KIT page: snare voice with tune, decay, tone, level, pan, drive, snap and accent knobs.

Drums

Synthesized, not sampled

12 voices of 808 and 727 with tune, decay, tone, snap and drive each.

 The grooves list: house, techno, disco, rock, funk, dub, breakbeat and more.

Sequencer

64 steps, any knob per step

A length per lane, parameter locks, swing and 20 grooves to start from.

 The LOOP clips page: two clips, one playing, its waveform below.

Looper

Four clips that never drift

The first loop sets the tempo; overdub, undo, redo, reverse, half and double speed.

 The MIX MOD page: LFO 3 with rate, shape, depth and a live waveform.

Modulation

Four LFOs into anything

Tempo-synced or free, with step shapes you draw. Hold any knob to route one.

 The EXT CHAIN page: drive, compressor, EQ, chorus and tremolo blocks for the guitar input.

Guitar

Your guitar in the mix

Drive, compressor, EQ, chorus, tremolo and a tuner, with delay and reverb sends.

Everything in 2.0 →

Side by side

Which one is yours

PatchMini 1.1 · Stomp 1.0Groovebox2.0 · Mini
PedalsAmpero Mini, Ampero II StompAmpero Mini
Built onHotone's firmware, patchedOur own firmware
Amps, cabs, stock effectsAll of themNo. Guitar goes through our drive, comp, EQ, chorus and tremolo
New effects10 on the MiniDrive, comp, EQ, chorus, tremolo, delay, reverb, tuner
SynthA drone / pattern synth effect on the Mini303-style mono, arpeggiator
DrumsStock drum machine + your own patterns12 synthesized voices, 64-step sequencer
LooperStock looper, locked to the drums4 clips, overdub, undo
Modulation2 LFOs + step sequencer per patch, XY pad4 LFOs, 16 routes
Your presetsKeep working8 projects of its own
Going backFlash the official Hotone file. Nothing to undo.

Free, and stays free

Every release is free for everyone. Soon you'll be able to support the work right here on the site. Questions, bugs and new ideas go to Discord.

Join the Discord