Unofficial community firmware · Sonicake Amphonix 2
The tuner in the web app (also over USB), scenes (snapshots) on the A / B / C keys, 3 or 5 presets per key, 10 + 10 IR and NAM slots with 30-character names, the IR after your NAM capture, a DSP load meter and MIDI control, all on top of the official V1.0.2 firmware. From the makers of the Pocket Master and Smart Box CFW: the same platform, flashed with Sonicake Manager like any update.
// status · test build CFW 0.2 is in development. A test build runs on our own Amphonix 2, it is not released yet. Nothing to download yet: the download and the release notes appear here with the first release.
At your own risk. Unofficial, not affiliated with Sonicake. Flashing modified firmware can brick the unit and void the warranty. No guarantee of any kind. Read the disclaimer.
From the makers of the first custom firmware for Sonicake pedals (Pocket Master CFW, since October 2026).
amphonix2-cfw.guitar-training-generator.com.bin has its SHA-256 in the release notes: check itpocketmaster-cfw.guitar-training-generator.com/app/Building on it? Great, that's what a community is for. Just credit it and link this site.
Coming from the stock firmware? On the first boot the CFW keeps your 5 User IRs and 5 NAM captures and adds 5 more slots of each. Going back to the stock firmware later shows the IR and NAM slots empty: back up first.
Illustrative drawing, not a photo, no logos.
// releases
Every release is one file, for the first install and for every later update. Newest first.
Loading releases…
The official Amphonix 2 firmware V1.0.2 has been opened and studied: it is a Pocket Master without screen and footswitches (the same firmware package, the same DSP modules, its own builds). The SonicMaster CFW web app now recognises it as a third pedal, and a first CFW 0.2 test build is ready for the hardware test.
// features
Everything below runs on the unit itself, on top of the official Sonicake V1.0.2 firmware. CFW 0.2 is a test build: the dashed badge means not released yet. Every card links to its chapter in the user manual.
Every feature explained, on the unit and in the web app: installing, the A / B / C keys and their LEDs, scenes (snapshots), the tuner, slots, MIDI, backup and going back, the FAQ.
Note, cents, Hz and A4 of the unit's own tuner, in the app, also over USB (the original firmware tunes only over Bluetooth). A4 430–450 Hz and Mute / Bypass are saved; low bass notes lock and read right (emulator result, to be confirmed on the unit).
Three sounds per preset, BASE, SC1 and SC2, with knobs and blocks on / off, made in the web app. On the unit: hold the key of the preset for the next scene.
As stock, 3 presets per key (P01–P09), or 5 per key (P01–P15) with two more LED colours. The LED blinks once, twice or three times for BASE, SC1, SC2.
10 User IR and 10 NAM (Clone) slots instead of 5 + 5, names up to 30 characters. Your stock 5 + 5 are kept, with their names. An interrupted upload no longer spoils the next one.
In a NAM preset, switch the IR block on: the factory cab or your User IR plays after the capture. With the IR block off the capture plays alone, as before.
How busy the DSP is, in % of its time, live in the web app: see before a preset gets too heavy.
Two groups of blocks, FS1 and FS2, switched on and off together from a MIDI controller (CC 80 / 81): on the Amphonix 2 the only way to switch them. A scene never switches a block of a STOMP group.
The original firmware ignores MIDI. With the CFW, over USB and Bluetooth: choose presets, switch blocks, the STOMP groups (CC 80 / 81) and the scenes (CC 82 / 83 / 85), open the tuner and set the volume. The Stock map uses the Pocket Master CC numbers, so the Pocket Control “Pocket Master” banks work.
Every reply to the app leaves at a safe moment, so the USB-MIDI link does not lose answers or get stuck during long editing sessions.
50 presets, the Pocket Master models (without AC G), NAM captures and IRs, the drum machine, Bluetooth audio, USB-C audio and recording, the battery: all kept as they are.
// keys
The Amphonix 2 has no screen and no footswitches: its three keys do the work. Choose the mode in the web app: Settings → A / B / C keys.
| Key | Each click |
|---|---|
| A | P01 → P02 → P03 |
| B | P04 → P05 → P06 |
| C | P07 → P08 → P09 |
The three LED colours of the original firmware.
| Key | Each click |
|---|---|
| A | P01 → … → P05 |
| B | P06 → … → P10 |
| C | P11 → … → P15 |
The three stock colours, then two mixed ones.
// web app
The editor in your browser, the same one as for the Pocket Master and the Smart Box: it tells by itself which unit you connect. Nothing to install, or install it as an app.
.nam captures for the NAM slots, and works with TONE3000
The app lives on the Pocket Master site: one app for all three units. The Amphonix 2 CFW features come with the next web-app release.
// install
One file for the first install and for every update, flashed like an official update. Not available yet: these are the steps for the first release.
Make a backup in the web app (Backup & restore) and keep the files of your IRs and NAM captures.
Put the Amphonix 2 in update mode: unplug USB, then press and hold volume +, volume −
and the power key together until all lights are on. Then only the power key's LED stays on, white / light blue: that is update mode.
Plug USB back in, click Firmware
Update in Sonicake Manager, pick the CFW .bin and wait for the progress bar, as with
an official update. Windows 11: if the update stalls, give the update-mode device the “USB Audio
Device” driver.
The first boot takes a moment longer: the CFW moves your 5 User IRs and 5 NAM captures into the new 10 + 10 slots. Your presets keep working.
It shows Amphonix 2 CFW 0.2 and opens the new features.
Flash the official V1.0.2 the same way (update mode, Sonicake Manager). If an image does not boot, the same steps (USB unplugged, the key combination, only the power LED lit) still enter update mode (it lives in the boot loader, not in the firmware): re-flash the official V1.0.2. After going back the IR and NAM slots show empty (the data stays in the unit: installing the CFW again brings them back).
// midi
The original firmware ignores every MIDI note and controller. With CFW 0.2 the Amphonix 2 listens to CC, Program Change and notes over USB-MIDI and Bluetooth MIDI.
Not on the Amphonix 2: tap tempo, looper, drum, knob roles, MIDI pedals A–D, Global EQ. Every setting and the CC list: the MIDI chapter of the manual.
⚠ At your own risk. We do NOT guarantee that this firmware works on your unit. CFW 0.2 is a test build, tested on our own unit only. Sonicake may have shipped hardware revisions we have never seen.
Unofficial community project. The Amphonix 2 custom firmware and SonicMaster CFW are not affiliated with, authorised or endorsed by Sonicake.
Modifying the firmware of your device can brick it and may void your warranty.
Everything here is provided "as is", without warranty of any kind, express or implied. The author accepts no liability for damage to your device, loss of data (presets, IRs, NAM captures) or any other loss arising from its use. Use it at your own risk.
Sonicake, Amphonix, Pocket Master, Smart Box and the other product names are trademarks of their respective owners and are used here only to describe compatibility.
The firmware file is the official Sonicake firmware V1.0.2 with community modifications: it contains Sonicake code, modified by the community.
// credits