Dear James,
I hope the Bryston DAC wil involve the AD1896 samplerate converter. Not (only) for the upsample capability's but for the fact you can make a almost jitter immune DAC. This is in fact the power behind the so appreciated Benchmark DAC-1. Their so called ultra "ultralock" is based on the AD1896 in combination with the AD1953 DAC chip. The idea is simple. Buffer al the incoming (clock) data into a FIFO buffer (inside the AD1896 ARC). Then generate a new fixed clock frequency. for example if you upample tot 192Khz. 49251Mhz. in this case. The output of the AD1896 is fed bij a new stable clock. Now there is no PLL anymore that have to be pulled by the wordclock generated by the digital source. (what always couse jitter no matter how stable or tight the PLL is) You have the most stable clock now close to the D/A converter chip, and there is the place where a stable clock is really important.
This is the main reason why the Benchmark sound so good. For the rest the opamps and the powersupply is nothing special and on the lowend side in the Benchmark. So my idea is, If Bryston use the same technology but with a real good powersupply and the great Bryston "DOA" discrete opamps. You might build the best dac currently availlible
Powersupply is everything and I hope Bryston wil build some discrete regulator circuit for the important clock and dac ic's. Any way avoid a 7805
Best regards,
Bas
