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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.
Spectra Research/ bp Design
Reviewed in the United States on September 30, 2024
worked wonderfully right out of the box and was easy to configure in my software
redjr
Reviewed in the United States on November 28, 2023
These DIY Tone DAC boards are great to use in DIY projects. At the time Khadas released the Toneboard 1 (TB1, 2019), it was a hit and blew away many of commercial DAC. For its price point, feature set, and sound quality, it simply could not be beat. Over the past few years, I have used 3 TB1 in various DACs and small streamers. They have all performed extremely well, and I could always count on the quality of sound they delivered.Then a couple years ago, Khadas released an upgrade - the Toneboard 2 (TB2). This was offered as two different products, a finished unit in a nice, super small, package. The consumer version allowed a user to connect up there source using a USB-C connection for power and signal, add an external amplifier, or headphones, and your good to go. Even the specs were notched up a bit in the newer TB2, and it sounded great. The TB2 even had offered balanced output using a new RCA plug Khadas designed that was backward compatible with normal RCA output connectors.Eventually, Khadas released a sort of 'bare bones' addition of the TB2 for the DIY community called the Toneboard 2 Maker Kit. I picked a couple of these on Amazon for $119, to use in my new upcoming DIY DAC/Streamer projects. Admittedly, the normal turn-dial of the TB2 is more difficult to ujse, but once you set it you can forget it. I typically never used the dial, so for my projects it was winner. I very seldom used headphones. You still got all the advantages of the TB2, without the extra cost. More recently, I picked up a TB1, for a friend's project at $69USD. Bargain of all bargains.Truly, either of these are value projects and worth looking at if you like to tinker and build external DACs and streamers. Recommended.
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