# What are some Thunderbolt audio interfaces with exceptional I/O options for multiple devices? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are some Thunderbolt audio interfaces with exceptional I/O options for multiple devices?

## Products

### Apogee Symphony I/O Mk II 16x16 Special Edition Thunderbolt Audio Interface
```yaml
product: apogee-symphony-i-o-mk-ii-16x16-special-edition-thunderbolt-audio-interface
brand: Apogee
price_gbp: 2930.35
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
latency: 1.35 ms
i_o_count: 16
sample_rate: 192 kHz
power_supply: 90-240VAC, 50-60Hz, 150W
number_of_channels: 16
```

- **Price:** £2930.35 [^1]
- **Summary:** Apogee Symphony I/O Mk II 16x16 Special Edition is a Thunderbolt audio interface built around a modular chassis with a 16x16 Special Edition analog I/O module for simultaneous 16-channel analog input and output. It supports up to 192 kHz sample rates and targets ultra-low latency performance, with monitoring and control via the front-panel touchscreen. Designed for Mac-based pro recording, mixing, and mastering workflows that need lots of analog I/O in one interface.
- **Ideal For:** It's purpose-built for multi-device workflows needing exceptional I/O: the 16x16 Special Edition provides 16 channels analog in and 16 channels analog out (plus coax S/PDIF I/O) over a single Thunderbolt-connected system.
- **Additional Sources:** [^2], [^3], [^1], [^2], [^3]

### Apogee Symphony Mk II 40th Anniversary Edition: 32x32SE Thunderbolt 3
```yaml
product: apogee-symphony-mk-ii-40th-anniversary-edition-32x32se-thunderbolt-3
brand: Apogee
price_gbp: 8734.62
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
latency: 1.35 ms round-trip
bit_depth: 24-Bit
sample_rate: 192 kHz
power_supply: 90 to 240 VAC, 50 to 60 Hz, 150 W
number_of_channels: 32
thunderbolt_version: Thunderbolt 3
```

- **Price:** £8734.62 [^4]
- **Summary:** Apogee Symphony Mk II 40th Anniversary Edition: 32x32SE Thunderbolt 3 is a Thunderbolt 3 audio interface built for high-end, multi-channel recording and mixing, with touchscreen control and modular 32x32 analog I/O plus additional digital I/O. It delivers up to 24-bit/192 kHz conversion and is designed for ultralow-latency workflows with immersive monitoring support. It suits professional studios and engineers needing exceptional channel count through a single Thunderbolt connection.
- **Ideal For:** It provides 32 analog inputs and 32 analog outputs over a built-in Thunderbolt 3 connection, enabling multiple devices/workflows that need extensive I/O density (plus additional 4-channel S/PDIF and word clock).
- **Additional Sources:** [^5], [^6], [^4], [^5], [^6]

---
## References & Sources
[^1]: B&H, accessed 2026-06-26. https://www.bhphotovideo.com/c/product/1764523-REG/apogee_electronics_sym2_16x16se_flagship_symphony_audio_interface.html
[^2]: Full Compass, accessed 2026-06-26. https://www.fullcompass.com/prod/624111-apogee-electronics-sym2-16x16se-thunderbolt-audio-interface-16-analog-i-o-of-mastering-grade-conversion
[^3]: KMR Audio, accessed 2026-06-26. https://kmraudio.de/apogee-symphony-i-o-mk-ii-16x16-8mp-thunderbolt/
[^4]: RSPE Audio, accessed 2026-06-26. https://www.rspeaudio.com/apogee-symphony-mkii-32x32se-ae
[^5]: Full Compass, accessed 2026-06-26. https://www.fullcompass.com/prod/650559-apogee-electronics-sym2ae-32x32se-tb3-symphony-mkii-anniversary-edition-with-tb-3-and-2x-16x16se
[^6]: Sound Pure, accessed 2026-06-26. https://www.soundpure.com/p/apogee-digital-symphony-mkii-32x32se-40th-anniversary/39855