Mhdt Labs USBridge
Mhdt Labs這是一家來自臺灣的公司喔，沒想到我在臺灣反而不太清楚，看日本網站才看到，USBridge是將USB 2.0所接收的數位訊號轉換成標準S/PDIF數位訊號的產品。
USBridge
USBridge works on:
Windows® XP (SP2,3), Vista, W7, (32 and 64)
Mac OS X 10.5.7 and later
Linux/Kubuntu (ALSA)
USBridge is a true high speed USB Audio Class 2.0 to standard S/PDIF digital signal converter
USBridgeis powered by USB line itself, so no further power input is needed
USBridge was designed for audiophile or DAW usages
USBridge is a asynchronous USB2.0 audio device
USBridge uses C-Media's CM6631 as main chip, C-Media's CM66xx were the world’s first commercialized USB2.0 true high-speed audio processors.
C-Media is a leading USB audio specialist in the world with excellent reputation for years.
CM6631 is used by ONKYO in their recently released high-end pre-amplifier P-3000R and DAC-1000 Hiend DAC.
Size: 90x3.2x95mm (w x h x d, case) 90x3.2x115mm (w x h x d, total)
Weight: 200g (7oz)
Sampling frequencies (kHz): 44.1, 48, 88.2, 96, 192
Resolution (bits): 16, 24, 32(*) bits
Inputs: USB 2.0,
Outputs: S/PDIF x1 (RCA) (BNC upon request), Optical Toslink™ x1, I2S (RJ-45)
S/PDIF transmitter: 3.3V LVCMOS with 24mA current capability (EIAJ CP1201, IEC-60958 interface standards)
I2S output voltage: 3.3V CMOS with 35mA current capability on each line
Power consumption: Standby:141mA, Operating:148mA
Since USBridge is in asynchronous operation, additional oscillators are used for USBridge as the more accurate clock sources and to achieve lower digital signal jitter. 49.152MHz is for 48/96/192KHz sample rate data and 45.1584MHz is for 44.1/88.2/176.4KHz data. These oscillators are specially ordered by Mhdt Labs for 10 ppm status.
Since Windows® is not a real time system, so the lower DPC latency value will result the better sound quality.
We strongly suggest you to run DPC latency check before using or purchasing
Please read the following user manual before your purchase
USBridge User Manual Rev 1.3
http://dhost.info/mhdtlab/USBridge.htm
