SOLD
Miro USB interface stack PCM1704 DAC board for sale.
A pair of PCM1704 with one white dot => J graded chips on the board, and these are very difficult to source these days. These are recycled chips from a reliable seller, removed with proper care. They are not bought from random sellers in Ali or ebay. They work properly and nicely.
What you need to provide :
1. Chassis, wires, connectors etc
2. You will need to give it PSU with rails +/-5V (Analog) , +/-5V (Digital) and +/-10~12V (IV Op amp supply)
3. Compatible USB-I2S interface board that can be stacked on the DAC board. The two such devices are :
http://jlsounds.com/i2soverusbFIO.html
and
Board fully populated with good quality caps eg. Nichicon KZ and FG, Vishay Mkp, Panasonic acrylic caps, etc
The IV Stage has a pair of AD811 op amp with heatsink mounted. Design is posted by Grunf, and discussed here:
[IMG alt="grunf"]https://www.diyaudio.com/community/data/avatars/s/53/53808.jpg?1638973617[/IMG]
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...
Payment by PAYPAL FF only please.
DAC + shipping registered & tracking = 250 USD or preferably 340 SGD (Singapore dollars)
Please note that the USB-I2S interface board is not included in this sales.
If you wish to purchase a USB-I2S interface board, DM me for enquiry.
Miro USB interface stack PCM1704 DAC board for sale.
A pair of PCM1704 with one white dot => J graded chips on the board, and these are very difficult to source these days. These are recycled chips from a reliable seller, removed with proper care. They are not bought from random sellers in Ali or ebay. They work properly and nicely.
What you need to provide :
1. Chassis, wires, connectors etc
2. You will need to give it PSU with rails +/-5V (Analog) , +/-5V (Digital) and +/-10~12V (IV Op amp supply)
3. Compatible USB-I2S interface board that can be stacked on the DAC board. The two such devices are :
http://jlsounds.com/i2soverusbFIO.html
and
Board fully populated with good quality caps eg. Nichicon KZ and FG, Vishay Mkp, Panasonic acrylic caps, etc
The IV Stage has a pair of AD811 op amp with heatsink mounted. Design is posted by Grunf, and discussed here:
[IMG alt="grunf"]https://www.diyaudio.com/community/data/avatars/s/53/53808.jpg?1638973617[/IMG]
Thread 'AD811 as I/V stage for current DACs (and test some other opamps including Burson Audio opamps as I/V)'
2023-01-11 6:54 amFirst, 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: 297
- Forum: Digital Line Level
-
Payment by PAYPAL FF only please.
DAC + shipping registered & tracking = 250 USD or preferably 340 SGD (Singapore dollars)
Please note that the USB-I2S interface board is not included in this sales.
If you wish to purchase a USB-I2S interface board, DM me for enquiry.
Last edited:
Vishay tantalum resistors for the IV stage. As recommended by Grunf.
Decoupling caps for the op amp are tiny 0805 caps + Nichicon Muse , very near to the pins of the sockets.
Decoupling caps for the op amp are tiny 0805 caps + Nichicon Muse , very near to the pins of the sockets.