SOLD
Miro PCM1704 DAC board for sale.
A pair of PCM1704 J graded chips on the board. These are recycled chips from a reliable seller, removed with proper care. They are not bought from random sellers in Ali or ebay.
Fake chips won't work, don't ask me how I know.
What you need to provide :
1. You will need to give it PSU with rails +/-5V (Analog) and +/-5V (Digital).
2. i2s source (Amanero Combo384 USB-i2s, JLSounds i2soverUSB are some examples) is needed to feed it in order to play music. u.fl connectors have been soldered on the board in case you wish to use u.fl cables for your i2s signals.
3. Chassis, wires, connectors etc
Board fully populated with good quality caps eg. Elna Tonerex, Nichicon KZ, Wima Mkp, Panasonic acrylic caps, Samsung ceramic caps. all the signal resistors are low noise non-magnetic resistors with copper leads, good quality Nextron IC gold plated contacts sockets. The IV resistors are expensive Vishay Angstrom hermetically sealed resistors.
https://www.vishay.com/en/resistors-fixed/hermetically-sealed/
The IV Stage has a pair of AD811 op amp with heatsink mounted. The board has been modified (tracks cut, caps added, ) and decoupling has been done differently from the stock board to allow the AD811 to work properly. Hence this board is optimised for the AD811. To me, this is the best op amp IV stage for the PCM1704. I did not bother to revert to stock design for other op amps after trying this. The AD811 IV designed by Grunf has been discussed here :
Of course the IV will still work with other op amps, but as mentioned the mod is optimised for the AD811. This mod is reversible if you know what you are doing, but I really would not bother.
Payment by PAYPAL FF please.
DAC + shipping registered & tracking = 225 USD or preferably 308 SGD (Singapore dollars)
Miro PCM1704 DAC board for sale.
A pair of PCM1704 J graded chips on the board. These are recycled chips from a reliable seller, removed with proper care. They are not bought from random sellers in Ali or ebay.
Fake chips won't work, don't ask me how I know.
What you need to provide :
1. You will need to give it PSU with rails +/-5V (Analog) and +/-5V (Digital).
2. i2s source (Amanero Combo384 USB-i2s, JLSounds i2soverUSB are some examples) is needed to feed it in order to play music. u.fl connectors have been soldered on the board in case you wish to use u.fl cables for your i2s signals.
3. Chassis, wires, connectors etc
Board fully populated with good quality caps eg. Elna Tonerex, Nichicon KZ, Wima Mkp, Panasonic acrylic caps, Samsung ceramic caps. all the signal resistors are low noise non-magnetic resistors with copper leads, good quality Nextron IC gold plated contacts sockets. The IV resistors are expensive Vishay Angstrom hermetically sealed resistors.
https://www.vishay.com/en/resistors-fixed/hermetically-sealed/
The IV Stage has a pair of AD811 op amp with heatsink mounted. The board has been modified (tracks cut, caps added, ) and decoupling has been done differently from the stock board to allow the AD811 to work properly. Hence this board is optimised for the AD811. To me, this is the best op amp IV stage for the PCM1704. I did not bother to revert to stock design for other op amps after trying this. The AD811 IV designed by Grunf has been discussed here :
First, let me introduce my DAC, some have already seen it, but for those who haven't, it's a classic old-school DAC with DIR9001 as a digital receiver, PMD100 digital filter and 6 PCM1702s, three in parallel for each channel. The output current of 3 PCM1702s is 7.2mAp-p max. The power supply is given the greatest care, the PCB itself with DIR9001 has three ADP7118 regulators and they are the only IC reg. in the DAC. Other regulators, two +5V for PMD100, +/-5V for PCM1702 and the new +/-10V for AD811 are low noise shunt regulators, slightly improved, made according to Mr.Walt Jung's article...
- grunf
- Replies: 401
- Forum: Digital Line Level
Payment by PAYPAL FF please.
DAC + shipping registered & tracking = 225 USD or preferably 308 SGD (Singapore dollars)
Last edited:
Pic taken with another board with stackable USB-i2s interface. On sale here :
If you wish to be supplied with JLSounds or York USB interface to complete the kit, please DM to discuss.