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High Fidelity Audio
Tone2 utilizes the powerful XMOS XU208 processor with 8 cores & 8 threads for high performance bit-perfect decoding. Decode up to 768KHz PCM and DSD 512 (Native) audio files and enjoy digital master quality audio.
High Performance ESS DAC
Tone2 has been engineered for audio perfection. The powerful ESS ES9038Q2M DAC chip is paired with two TI OPA1612 operational amplifiers and two Ricore RT6862 operational amplifiers.
Precise Clock Management
Various audio components are carefully arranged on Tone2’s PCB layout. Two Accusilicon AS318-L series, active crystal oscillators with low phase noise and low jitter and one SiTime SiT8209 high performance active crystal oscillator at 100M enhance the low noise characteristics. The phase jitter is controlled within 0.5ps and the frequency drift is only ±10PPM. This ensures that the time interval of each sample is more stable, so that the analog audio signal can be returned more clearly.
Selecting Power Supply
Tone2 is powered by USB-C (USB) or I2S (Linear Power Supply), with a power path management chip from Texas Instruments. Power selection is easy.
* Linear power supplies require a Khadas-designed USB-C cable, which will be available soon.
Multiple Input/Output Methods
Tone2 has multiple I/O interfaces on its compact chassis. Input: USB, S/PDIF, Bluetooth (w/ BT Magic) Output: Balanced RCA, Single-end RCA
With Tone2, you will have the freedom to switch between a variety of audio input and output sources easily.
Total Harmonic Distortion (THD+N):
Balanced RCA: -118dB Single-end RCA: -116dB
Maximum DAC Line-Output:
Balanced RCA: 4Vrms@200KΩ Single-end RCA: 2Vrms@100KΩ
BT Magic
BT Magic is a Hi-Fi Bluetooth audio receiver module exclusively engineered by Khadas for the Tone2 series. Experience consistent and interference-free wireless audio, simply plug the module into Tone2’s USB (I2S) port.
Tone2 Maker Kit-More Possibilities for Audiophiles, DIYers & OEM Customers
The Tone2 Maker Kit supports both Makers and OEM (Original Equipment Manufacturer) customers. An MQA-licensed Tone2 DAC is available for OEM customers who wish to use Tone2 in retail products.
The analog circuits of the Tone2 Maker Kit are protected by a shield to block external electromagnetic interference, ensuring a consistent listening experience.
Versatile Expansion
The Tone2 Maker Kit provides our customers with a range of expansion and connectivity options. For example, an external power supply can be attached to the 4-pin 1.2mm VIN input, and OEM clients will have more options such as customized MQA decoding functions.
Tone2 Maker Kit is also competible with Khadas single board computers:
40-pin 2.54mm GPIO Connector:
VIM1S/VIM3/VIM3L/VIM4
14-pin 0.5mm FPC Connector:
VIM3/VIM3L/VIM4
* Only the Tone2 Maker Kit includes additional I/O access via FPC/VIN headers integrated into the PCBA
Tone2
Color：Black & Dream Blue
Interfaces：
x1 USB-C 2.0
x1 USB-C (I2S)
x1 Balanced RCA (orange) coaxial input
x1 Balanced RCA (white) left channel line OUT
x1 Balanced RCA (red) right channel line OUT
I/O ：N/A (other I/O will be blocked by the shield case)
Dimension ：17.00mm(H) x 88.00mm(W) x 61.5mm(L)/ 68.0mm(with RCA)
Tone2 Maker Kit
Interfaces：
x1 USB 2.0
x1 USB-C (I2S)
x1 Balanced RCA (orange) coaxial input
x1 Balanced RCA (white) left channel line OUT
x1 Balanced RCA (red) right channel line OUT
IO:x1 30-Pin 0.5mm FPC /x1 40-Pin 2.54mm header (USB2.0, GPIO I2S, UART, Power)
x1 14-Pin 0.5mm FPC/x1 4-Pin 1.2mm VIN Input (4.8~14V)
×1 14-Pin 0.5mm FPC (Power, USB2.0)
Dimension ：12.70mm (H) x 82.00mm(L) x 56.00mm(W) /65mm(with RCA)
BT Magic
BT Magic is a Hi-Fi Bluetooth audio receiver module exclusively engineered by Khadas for the Tone2 series. Experience consistent and interference-free wireless audio, simply plug the module into Tone2’s USB (I2S) port.
Jeff Carnevale
Reviewed in the United States on April 8, 2025
For such a little device gives a big sound
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