Here's the info on the unit I bought:
PCM4222 ADC
![Image](http://rossmartinaudio.com/index_files/image6461.jpg)
The PCM4222 represents the state of the art in Analog-to-Digital conversion. It is based on Texas Instruments' PCM4222 chip, a high-performance, two-channel analog-to-digital (A/D) converter designed for use in professional audio applications. Offering outstanding dynamic performance, the PCM4222 supports 24-bit linear PCM, 1-bit Direct Stream Digital (DSD), and 6-bit modulator data outputs. The supported output formats make the PCM4222 ideal for digital audio recording and processing applications. The multi-bit modulator output adds versatility, allowing customers to design their own digital decimation filter and processing hardware. The on-chip, linear phase decimation filtering engine supports Classic and Low Group Delay filter responses, allowing optimization for either studio or live sound applications.
Supported Sample Rates (KHz):
32
44.1
48
88.2
96
192
Supported Bit Depths:
24
20
18
16
Additional Features:
Master/Slave Mode
Word Clock Out
Master Clock Out
Selectable Filter Response
Led VU Meters With Overflow Indicators
OPA1632 1.3nv op amps
Inputs (Analog):
Balanced XLR
1/4” TRS
Outputs (Digital):
AES
SPDIF COAX
Optical