Updated: Jan 17
Improved volume adjustment, and other minor software updates.
We’ve just released the v1.41 firmware for your Tone2 Pro, you can download it from the link below:
Do not power-off your Tone2 Pro during the upgrade process, doing so will permanently corrupt the device firmware
Please disconnect BT Magic before starting the upgrade process, failure to do so will result in corrupted MCU firmware
Do not use the Tone2's firmware with the Tone2 Pro's, doing so will permanently corrupt the Tone2 Pro's firmware
MCU Firmware Changelog:
Improved volume adjustment
Enabled HID volume support
Improved encoder operation experience with a new jitter elimination algorithm
Added support for BT Magic
Improved automatic input switching
Reduced probability of an unrecognized device
Solved noise issue when MQA files are played at max volume
XMOS Firmware Changelog:
Improved LED display indication
Fixed MFi version display issue
Fixed iMac wake-from-sleep issue
Fixed BT Magic's noise issue when playing back PCM768
Fixed Mac OS HID volume issue
Download XMOS Firmware:
Due to limited USB bandwidth, Tone2 Pro cannot support HID volume control and PCM768 at the same time, so these features were implemented separately in two firmware versions. Choose either the normal firmware or HID firmware for your Tone2 Pro's XMOS chip.
tone2pro-xmos-v1.41-221201 (supports PCM768, but not HID volume control)
tone2pro-xmos-hid-v1.41-221201 (supports HID volume control, but not PCM768)
Since the MCU firmware has been combined into the XMOS firmware, after upgrading the XMOS, it is necessary to replug (off then on) the power supply to enter the MCU upgrade mode, thus completing the entire upgrade process. During this time, the LED light will flash 3 times representing "Detect, Update, and Complete" respectively.
When Tone2 Pro is connected, your PC will not enter the sleep state automatically.
(We have tried to solve this problem, but the current solution will cause an error exception when switching to the next DSD track, so we have not released this update)
The Tone2 Pro may become unrecognized when a Windows 10 PC wakes up from sleep. This issue was not observed on Windows 11 nor macOS.
How to Upgrade:
For v1.2 or later firmware, please check page 6 of the User Manual: Firmware Upgrade.
For v1.0 firmware (serial number starts with 0C… or 11…), in addition to updating the XMOS firmware, the MCU needs to be updated separately.
Information for updating the MCU (only v1.0 firmware needs this):
Tone2 Pro User Manual (EN):
Purchase a Tone2 Pro:
Purchase a Tone2 Pro on Amazon:
Purchase a BT Magic:
Khadas Maker Team