# Which brands offer the best midi audio interfaces? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which brands offer the best midi audio interfaces?

## Products

### Universal Audio Apollo Twin X DUO Gen 2
```yaml
product: universal-audio-apollo-twin-x-duo-gen-2
brand: Universal Audio
price_gbp: 712.32
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
bit_depth: 24 bit
i_o_count: 10 x 6
sample_rate: 192 kHz
audio_input_channels: 10
audio_output_channels: 6
number_of_midi_inputs: 0
number_of_midi_outputs: 0
```

- **Price:** £712.32 [^1]
- **Summary:** The Apollo Twin X DUO Gen 2 is a Thunderbolt 3 audio interface with two Unison microphone preamps, elite-class 24-bit/192 kHz conversion, and onboard DUO Core DSP for running UAD plug-ins in real time. It suits home studios, producers, and recording professionals who need high-quality audio, flexible digital expansion, and integrated monitor-control features.
- **Ideal For:** It suits musicians looking for the best MIDI audio interface brands because Universal Audio combines 10 x 6 audio I/O, 24-bit/192 kHz conversion, two Unison preamps, and DUO Core DSP, although it has no built-in MIDI ports.
- **Additional Sources:** [^2], [^3]

### Focusrite Scarlett 4i4 4th Gen
```yaml
product: focusrite-scarlett-4i4-4th-gen
brand: Focusrite
price_gbp: 220.53
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
bit_depth: 24-bit
i_o_count: 4 in, 4 out
sample_rate: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
audio_input_channels: 4
audio_output_channels: 4
number_of_midi_inputs: 1
number_of_midi_outputs: 1
```

- **Price:** £220.53 [^4]
- **Summary:** The Scarlett 4i4 4th Gen is a USB-C audio and MIDI interface with two mic, line, and instrument inputs, two additional line inputs, four line outputs, and loopback functionality. It suits home-studio musicians, producers, podcasters, and creators who need flexible connections, MIDI control, and high-resolution recording.
- **Ideal For:** It suits people comparing brands that offer strong MIDI audio interfaces because it combines 1 MIDI input, 1 MIDI output, four audio inputs, four audio outputs, 24-bit recording, and sample rates up to 192 kHz.
- **Additional Sources:** [^5], [^6]

### Behringer U-PHORIA UMC1820
```yaml
product: behringer-u-phoria-umc1820
brand: Behringer
price_gbp: 109.53
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
latency: Zero-latency direct monitoring
bit_depth: 24-bit
i_o_count: 18 inputs / 20 outputs
sample_rate: 96 kHz
audio_input_channels: 18
audio_output_channels: 20
number_of_midi_inputs: 1
number_of_midi_outputs: 1
```

- **Price:** £109.53 [^7]
- **Summary:** The U-PHORIA UMC1820 is an 18-input, 20-output USB audio interface with eight Midas-designed microphone preamps, ADAT, S/PDIF, MIDI I/O, and dual headphone outputs. It suits home studios, project studios, bands, and producers who need many simultaneous recording channels and expandability.
- **Ideal For:** It suits buyers seeking a strong MIDI audio interface because it includes dedicated MIDI input and output alongside 18 audio inputs, 20 outputs, eight microphone preamps, and ADAT expansion.
- **Additional Sources:** [^8]

---
## References & Sources
[^1]: Thomann, accessed 2026-08-28. https://www.thomannmusic.com/universal_audio_apollo_twin_x_duo_gen2_ess.htm
[^2]: ToneControl, accessed 2026-08-28. https://www.tonecontrol.nl/universal-audio-apollo-twin-x-duo-gen-2-analog-classics
[^3]: De Dijk Music Store, accessed 2026-08-28. https://dedijkmusicstore.nl/product/universal-audio-apollo-twin-x-duo-gen2/
[^4]: B&H Photo Video, accessed 2026-08-28. https://www.bhphotovideo.com/c/product/1779668-REG/focusrite_scarlett_4i4_4g_scarlett_4i4_4th.html
[^5]: Guitar Center, accessed 2026-08-28. https://www.guitarcenter.com/Focusrite/Scarlett-4i4-USB-C-Audio-Interface-Gen4-1500000404591.gc
[^6]: Focusrite, accessed 2026-08-28. https://us.focusrite.com/products/scarlett-4i4
[^7]: Guitar Center, accessed 2026-08-28. https://www.guitarcenter.com/Behringer/U-PHORIA-UMC1820-USB-Audio-Interface-1500000016729.gc
[^8]: Thomann, accessed 2026-08-28. https://www.thomannmusic.com/behringer_umc1820.htm