- Q & A
DIY Speaker Kits
This DAC board can let you add a digital to analog output to your Up2Stream Mini v3 and Pro v3. Due to the DAC chip used in this board, the sound quality is much better than the one onboard.
This Button board is an external board that contains multiple control buttons including play/pause, volume up, volume down, previous song, next song, standby and switch mode, on board IR receiver, connector for IR Extension Board and 4 mode indicator LED including WiFi, BT, AUX and USB. It is perfect to use as the control panel for your DIY device.
SPDIF In Board
Lacking a digital input for your DIY board and is too complicate to add it yourself? Here is the SPDIF input board that can let you easily add SPDIF input to your device. It contains an Optical input and Coaxial input jack. With this board, you can connect any device with SPDIF output as digital audio input source.
SPDIF Out Board
The long waited Digital output is finally here. This SPDIF output board can add digital output to your device, which contains an optical output and coaxial output jack. With this board, you can output digital audio data to other devices like a DAC or digital ampliﬁer.
IR Extension Board
So the on board IR receiver does not fit your DIY case? You need to position it somewhere else? This IR extension board can let you connect an external IR receiver so you can position the IR receiver to ﬁt your DIY needs. *Need to use with Button board
Volume Knob Board
Need a volume knob on your DIY project? Then this is perfect for you! You can use this Volume board to add a volume knob to your device.It is an encoder and you can use it to turn volume up or down, and for Mini v3, press the volume knob can switch input mode.
|DAC Board||Sample Rate up to: 24bit/192KHz
Dynamic Range: 112dB
Interchannel Isolation: 100dB
THD+N: 0dB FS 0.002%
Power supply: 3.3V ± 5%, 23mA 5.0V ± 5%, 31 mA
|Button Board||Size: 68x64mm|
|SPDIF In Board||Sample Rate up to: 16bit/176.4MHz
|SPDIF Out Board||Sample Rate is same as the connected board
|IR Extension Board||Size: 18x10mm
Package:Data cable and IR receiver cable included
|Volume Knob Board||Size: 22x17mm|
QUESTIONS & ANSWERSAsk a Question
Is it possible to connect the IR extention to the WiFi & Bluetooth 5.0 Amplifier Board Up2Stream amp V3 without the button board?With button board ,you can plug and use .
If use with mainboard ,you have to find the pin and jump the cable, for the pin definition ,we have words on the bottom
Is the SPDIF In Board compatible with WiFi & Bluetooth 5.0 Amplifier Board Up2Stream amp V3?Yes, it works with amp 2.0 V3
Hi, I have a question about the DAC Board. It comes with a lead to connect to the Up2stream Pro V3. On the DAC the voltage marked is 3.3V and the corresponding pin on Pro 3 is marked as 5V. Is this correct? Should the DAC separate power socket be powered with 5V. There is no mention of it in the manual. I have plugged it in and it sounds very distorted unless you hold the interconnect cable. It sounds dreadful. Can you help me?Hi, the DAC board accepts 3.3V~5V voltage, so the power is OK. And for the noise you encountered, please make sure you used the 7 PINs wire accompanyed with the DAC board. It is copper core cable. The I2S signal is a bit sensitive to the wires. And another point to check, the DAC output will be 2Vrms when powered with 5V voltage. Make sure the input of the AMP can accept such voltage to avoid distortion.
Is it possible to create my own volume Knob board? Can you provide a schematic for this?Hi, sure, and it would be easy to make your own volume knob. We support coding key knob. And you just need to connect the GND to device, and the PIN A/B to the GPIO1/2 (for example MINI, and switch PINs when you found direction wrong). The board has internal pull-up to drive the coding key. And you should add 104 capacitors for these 2 PINs also to get better experience.
Regarding the SPDIF input board - how are inputs selected? Does it automatically pick the active input, or does each input (coaxial or optical) need to be selected each time from the app? Especially between the two inputs - coaxial and optical, versus wireless in (Bluetooth/wi-fi). Thanks!
You have to swtich from app . our system will remember your last input source .
I guess you won't change source all the time ,swtich by app or our remote controller should be quite easy thing .
About DAC. (1) Can output volume of DAC be regulated by the 4Stream App the same way as the Up2Stream Pro V3? (2) When would this board be available in the EU warehouse? Thanks!
Yes, app can control the volume as well .
EU stock around end of Oct.
Why this DAC extension board is better than on the up2stream pro v3 and up2stream mini v3 boards. The up2stream pro and mini boards uses the same internal DAC?Up2stream Mini and pro use the DAC integrated by the MCU . Sound good as most of user feedback .
The new DAC board is using ESS9023,which has it's own sound style ,also loved by many audio users .
Which Up2Sream Boards are compatible with the new SPDIF In Board?Up2Stream AMP V3 and Up2Stream AMP2.1 support the SPDIF IN board, and we will release the new firmware with OPTICAL source enabled soon
Could you please provide some further infos about the DAC board, like which DA chipset is used, how and why performances are improved using it (instead of the the one already included on the Up2Stream) and if the onboard DAC is bypassed adding the DAC board to the Up2stream, thanksWe will prepare specification for the accessories. And for a quick answer, the DAC board used chipset ES9023, and it benifits from ESS technology and considered to be starter HIFI. The onboard DAC is integrated in the main chip, it's functional and have nice signal to noise ratio, but just a normal one.
With the extra DAC board installed, it will not affect the onboard DAC output, they will both have outputs.
Is it possible to use the SPDIF Out module combined with the Volume Knob and/or the Button Board to send digital audio (without any previous DA/AD conversion) with the "correct volume" to a DSP? Or in this case the Volume Knob is no longer functional? Or is there still DA/AD conversion even with the SPDIF Out module?
Volume Knob is encoding key, so it will adjust the digital volume ,so your answer is yes ,so volume knob is still in function .so all signal is digital .
Can the DAC 'upgrade' the onboard DAC in the amp? Can it feed the onboard amplifier for output?This DAC is mainly desgined as output and connect with amp .