Pro Master 20 bit interface

[Allbaldo]

What Pro Tools system does this interface work with? Does anyone know? Does it work with newer systems? Thanks!

[jeffro]

The ProMaster 20 Interface was used with a Sound Accelerator II/2 or a 442 Audio Card (both are NuBus). The main app that supported this was Sound Designer II.

Here are its specs:

Sample rates: 44.1k & 48k (user selectable).
A/D convertor: Ultra Analog ADC 20048; 128x oversampling; true 20-bit output.
A/D Frequency Response: 5Hz to 20kHz +/- 0.1dB.
A/D THD+noise: -104dB (@-60dB 20 to 20kHz).
A/D Phase response: 1 degree @ 10kHz; 10 degrees @ 20kHz
D/A Converter: Burr Brown PCM63; 8x oversampling; 20-bit input
D/A Signal to noise: >104dB(20Hz to 20kHz).
D/A Phase: +/- 3 degrees @20kHz.
Digital I/O bit resolution: 16 or 20-bit in, 16 or 24-bit out (switchable in SDII HW Setup). †
Digital I/O: AES/EBU Type I (pro) or Type II formats; XLR connectors.
Analog inputs: +4dBu; female XLR x 2; active balanced; pin 2 hot.
Maximum input level: +24dBu.
Slave Clock I/O: 256x FS, BNC jack (x2).
Slave Clock lock range: (varispeed) > 40kHz < 51.4kHz.
Metering: Digital monitoring, Sample accurate, 12-segment LED meters, displays output only.
Power: 100 120 220 240 VAC manual switching 50/60hz 60 watts maximum.
Dimensions: 2U rack mount 19" W x 3.5" H x 15" D. Weight: 16lbs.