Looks like the Ref 7.1 has been replaced with the Master 7 as of today.
What's new in the Master 7:
Since the Reference 7.1 release , already have more than 20 months . We spend more than 10 months test , now release the Master 7 .
Master 7 is the ultimate design of the PCM1704 chips .
The full new design DSP processor solder on the main board direct for best signal transfer and faster process data and clock , it bring the detail transparency and dynamic to another field than all other audio-gd DACs , it is allow users adjudgement the flaws or how beautiful of the source and records if match with a revealing amp .
It support up to 32bit / 192KHz through USB and I2S input, 24bit / 192KHz through SPDIF inputs ( NOS, 2X , 4X and 8X oversampling support . ).
There is no compromise building , have not any parts can for upgrade , built in all audio grade parts , OCC wires, TCXO , ect .
It is a full new design concept . The SPDIF inputs have applied specialty interface process the data, this is allow the best parameter design for different type SPDIF inputs.
IN1 : BNC input, ultra neutral , monitor and revealing allow users hear anythings in the records ,up to 24bit / 96KHz support .
IN2: AES input, neutral , up to 24bit / 192KHz support .
IN3, RCA coaxial input, neutral , up to 24bit / 192KHz support .
IN4, optical input , neutral , up to 24bit / 96KHz support .
IN5 , I2S input, ultra neutral , monitor and revealing allow users hear anythings in the records , ,up to 32bit / 192KHz support .
IN6 , USB input, ultra neutral , monitor and revealing allow users hear anythings in the records , ,up to 32bit / 192KHz support . (In Non-USB version, IN6 is I2S input)
Fully balanced discrete analog stages without any OPA and couple caps in the signal channels.
Non- feedback ACSS analog output stage .
Total of 21 groups dedicated power circuits ( 19 groups of high-quality class A parallel connection PSU with dedicated DC supply double-stage PSU ) and more than 50,000uF caps are used to purify the power supply.
USB Audio Class 2 High-speed Input from Windows / MAC / Linux
Supports High / full speed Asynchronous Transfer Mode up to 384K / 32Bit ability .
Resolutions support 16 / 24 / 32 Bit with sampling rate support 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz ( USB / I2S )
Supports up to 24 Bit/192KHz ( SPDIF )
Edited by DarknightDK - 9/3/12 at 7:07am