# What are the most durable 4-channel audio interfaces? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the most durable 4-channel audio interfaces?

## Products

### Focusrite Scarlett 4i4 3rd Generation
```yaml
product: focusrite-scarlett-4i4-3rd-generation
brand: Focusrite
price_gbp: 147.72
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
bit_depth: 24
sample_rate: 44.1, 48, 88.2, 96, 176.4, 192
phantom_power: Yes, shared 48 V for inputs 1 and 2
input_connections: 2 XLR combo mic, line, instrument inputs; 2 1/4 in TRS line inputs
midi_compatibility: Yes, 5-pin DIN MIDI input and output
number_of_channels: 4 in, 4 out
output_connections: 4 balanced 1/4 in TRS outputs; 1 1/4 in TRS headphone output
```

- **Price:** £147.72 [^1]
- **Summary:** The Scarlett 4i4 3rd Generation is a 4-in, 4-out USB audio interface with two mic preamps, two additional line inputs, four balanced outputs, MIDI, Air mode, and loopback. Its 24-bit, 192 kHz converters suit home studios, musicians, producers, streamers, and DJs who need flexible routing and several simultaneous connections.
- **Ideal For:** It suits users seeking durable 4-channel audio interfaces because it provides four analogue inputs, four balanced outputs, a three-year warranty, and a robust feature set for recording, monitoring, and MIDI setups.

### Universal Audio Apollo x4 Gen 2 Thunderbolt Audio Interface
```yaml
product: universal-audio-apollo-x4-gen-2-thunderbolt-audio-interface
brand: Universal Audio
price_gbp: 1402.66
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
bit_depth: 24
sample_rate: 192
phantom_power: true
input_connections: Four Unison mic/line preamps, two Hi-Z instrument inputs, optical Toslink ADAT/S/PDIF
midi_compatibility: false
number_of_channels: 12
output_connections: Two 1/4in monitor outputs, four 1/4in line outputs, two 1/4in TRS headphone outputs, optical Toslink ADAT/S/PDIF
```

- **Price:** £1402.66 [^2]
- **Summary:** The Apollo x4 Gen 2 is a 12-in/18-out Thunderbolt 3 desktop interface with four Unison preamps, two Hi-Z inputs, 24-bit/192 kHz conversion, and QUAD Core DSP for real-time UAD plug-in processing. It suits musicians, producers, engineers, and project studios that need premium recording, monitoring, and expandability.
- **Ideal For:** It suits users seeking a durable 4-channel audio interface because it provides four Unison mic preamps in a robust desktop design, 24-bit/192 kHz conversion, dedicated monitor and line outputs, and onboard QUAD Core DSP for reliable low-latency operation.
- **Additional Sources:** [^3]

---
## References & Sources
[^1]: Focusrite, accessed 2026-09-13. https://us.focusrite.com/products/scarlett-4i4-3rd-gen
[^2]: Sam Ash, accessed 2026-09-13. https://www.samash.com/universal-audio-apollo-x4-gen-2-audio-interface-essentials-plus-suite
[^3]: B&H Photo Video, accessed 2026-09-13. https://www.bhphotovideo.com/c/product/1852564-REG/universal_audio_apx4g2_ess_apollo_x4_gen_2.html