Even though the PCM1704 PDF declare the PCM1704 support up to 96KHz
/ 24bit, highest word clock input is 768KHz.
In fact the PCM1704UK can support 192KHz / 24bit at 8X oversampling
, the word clock input is 1.536MHz , as high as
Click to read the USB-32
Fully discrete Diamond Difference design , without any OPA and couple caps in the signal channels.
High working voltage (+/-35VDC) class A design .
Uses R-core transformer .
More than 20,000uf audio grade NOVER capacitors are used to ensure
ample and smooth power feed.
A total of 4 groups class A PSU and 4 groups linear PSU are used to purify the power
supply. To achieve high S/N, the control circuit is powered with
Uses most Hi-end grade parts and exact match transistors.
High / Low output level select .
5 groups digital input :
coaxial *2 / Optical *2 / USB
Preamp / DAC output :
USB Audio Class 2 High-speed Input from Windows / MAC / Linux
Supports High / full speed Asynchronous Transfer Mode up to 384K / 32Bit
Resolutions support 16 / 24 / 32 Bit with sampling rate support
44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz ( USB )
Supports up to 24 Bit/192KHz ( SPDIF )
The DSP-1(V5) digital processor can supports NOS, 2X, 4X and 8X
oversampling customers setting.
What's different between SA-1.32 and Reference 5.32:
Both have built in DSP-1 and 4 pcs PCM1704UK .
TI want to discontinued PCM1704 but there are still a
lot hi-end fans love the real sound of the PCM1704UK.
The SA-1.32 retains rich details and
high clarity with its abundant music flavor with wide and deep sound
stage . It is single-ended output.
The Reference 5.32 sound dead neutral and monitor . It
is balance output.
History of the
Diamond Difference design
At July 2004, I registered the brand audio-gd , at September 2004, I
published the first generation diamond difference design at the < Radio
& TV> , the best popular audio technology magazine in China .
There were a lot DIYer call me even writed letters to me discuss the
At November 2004 , the fist regular product of audio-gd , XA-100 power
amp released. It had the good honor from customers , let audio-gd
can stand and grow up. Before this amp, I already have 6 years
experiences of built the Diamond Difference circuit .
At 2005, the first regular DAC product DAC-1 released, a TDA1541A with
diamond difference output stages.
2006 ,the RT-1 released , its sound adjusted based on a 300B
At 2007 , the RT3
kit released for DIYers .
, the DAC-3 released, built in 4 pcs PCM1704 with diamond difference design .
At 2009 ,the
SA-300 balanced amp released .
At 2010, I design the dual TDA1541AS2 DAC for fun, we only sale 5 units to
the return customers . A pair
TDA1541AS2 now value USD800 in market .
At 2011 is the Reference 8 and 9
Some other products applied Diamond Difference
design maybe can't list , like the C-2 SA, ROC-SA, SA-100.
from users :
26th Jan , Steve from Norway:
Now the dac have been played
nearly 24/7 after i got it. And the sound has became amazing. What a
The sound is more focused, more precise and clarity - specialy on
the mid and high, the dialog is spot on in the middle, the tweeters
sounds crystal clear, and for the first time i got surrounded by the
sound from only two speakers! I cant imagine hov the SA2 is :-)
My Speakers is B&W CM6
Source: Yamaha S2700, Coax
The best option i found on the jumpers is:
PLL - Bypass
Stopband - -50DB
Data Dithering - Inactive