| Brand | MOTU |
|---|---|
| MPN | MA9321 |
| Model | MOTU 9321 |
| Type | Audio Interface |
| Channels of I/O | 32 Inputs / 34 Outputs |
| Maximum Sampling Rate | 192 kHz / 32-Bit |
| Number of Microphone Inputs | No Mic Inputs |
| Analog Audio I/O | 16x 1/4 TRS Balanced/Unbalanced Line Input 16x 1/4 TRS Balanced L |
| Host Connection | 2x USB-C (Class-Compliant) |
| Built-In DSP | Yes |
| Built-In Microphone | No |
| Input Level Adjustment | via Software |
| Gain/Trim Range | 1/4 Line Inputs: 0 dB to +20 dB 1/4 Line Outputs: 0 dB to -99 dB |
| Phantom Power | No |
| Digital Audio I/O | 1x TOSLINK Optical ADAT / S/PDIF Input (S/MUX Support) 1x TOSLINK |
| Host Connection Protocol | Thunderbolt 4, USB 2.0, USB 3.0 / 3.1/3.2 Gen 1, USB4 |
| USB (Non-Host) | No |
| Sync I/O | 1x BNC Word Clock Input 1x BNC Word Clock Output |
| Network I/O | 2x RJ45 AVB (Gigabit) |
| MIDI I/O | No |
| Expansion Slots | No |
| Wireless | No |
| Frequency Response | 1/4 Line Inputs: 20 Hz to 20 kHz ±0.05 dB 1/4 Line Outputs: 20 Hz |
| Maximum Input Level | 1/4 Line Inputs: +21 dBu |
| Maximum Output Level | 1/4 Line Outputs: +21 dBu 1/4 Headphone Outputs: 13.3 dBu |
| Impedance | 1/4 Line Inputs: 20 Kilohms 1/4 Line Inputs: 220 Ohms 1/4 Headpho |
| Dynamic Range | 1/4 Line Inputs: 120 dB 1/4 Headphone Outputs: 118 dB 1/4 Line Ou |
| THD+N | 1/4 Line Inputs: -114 dB 1/4 Line Outputs: -114 dB 1/4 Headphone |
| Sample Rates | 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz |
| Bit Depths | 32-Bit |
| Latency | 1.8 ms at 96 kHz |
| Sync Sources | ADAT, AVB, Internal, S/PDIF, Word Clock |
| Clocking | Word Clock: Input Termination: 75 Ohms Input Voltage: 1 to 3 V p- |
| Media/Memory Card Slot | No |
| OS Compatibility | Computer: macOS / Windows Mobile: iOS Only |
| Power Requirements | AC Input |
| AC Input Power | 100 to 240 VAC, 50 / 60 Hz |
| UPC | 839128006287 |
Check the listing for details. MOTU 16A 32 x 34 Thunderbolt 4 / USB4 Audio Interface. Condition: New. Listed at 1595.00 USD. The unit integrates a 64-channel DSP-driven monitor mixer with 32-bit floating-point internal processing, enabling low-latency routing and effects independent of host CPU load. A full digital patch bay provides flexible signal routing between physical I/O, the internal mixer, computer channels, and the AVB network.