Manual: https://www.sounddevices.com/wp-content/uploads/2019/01/664ug_en.pdf
- 6 Low-Noise Balanced XLR Inputs
- Selectable Phantom Power +12V or +48V
- Direct Output on Each Channel
- Records to CompactFlash and SD Cards
- Resolution up to 24-bit/48.048kHz
- Flexible LCD-Based Routing Control Menu
- Configurable AES Digital Inputs/Outputs
- 4 Output Busses with Easy Connectivity
- Advanced Mixing Surface
- Powered by 5 AA Batteries, DC Adapter or Swiftronix Battery System
