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

> All specification data verified from official manufacturer documentation.

What are the most portable 4-channel audio interfaces?

## Products

### Universal Audio Volt 476P Portable 4x4 USB Audio/MIDI Interface
```yaml
product: universal-audio-volt-476p-portable-4x4-usb-audio-midi-interface
brand: Universal Audio
price_gbp: 324.27
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: +48V switchable
input_connections: 4 x XLR/TRS combo mic/line/instrument inputs
midi_compatibility: 1-in / 1-out MIDI via 5-pin DIN
number_of_channels: 4-in / 4-out
output_connections: 2 x monitor outputs, 4 x line outputs, 2 x headphone outputs
```

- **Price:** £324.27 [^1]
- **Summary:** The Volt 476P is a portable 4-in / 4-out USB audio interface with four mic, line, and instrument preamps, 24-bit/192 kHz conversion, Vintage preamp mode, and built-in 76 Compressor presets. It suits musicians, producers, podcasters, and mobile recording setups that need multiple inputs, MIDI connectivity, and direct monitoring.
- **Ideal For:** It suits people looking for the most portable 4-channel audio interfaces because its 2.5 lb metal desktop design provides four combo inputs, four line outputs, two headphone outputs, USB-C connectivity, and 24-bit/192 kHz recording for mobile Mac, PC, iPad, and iPhone setups.

### Roland Rubix44 4x4 USB Audio Interface
```yaml
product: roland-rubix44-4x4-usb-audio-interface
brand: Roland
price_gbp: 324.91
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
bit_depth: 24
sample_rate: 44.1, 48, 96, 192
phantom_power: +48 V
input_connections: 4 XLR and 1/4 in TRS combo inputs
midi_compatibility: MIDI In and Out
number_of_channels: 4 input / 4 output
output_connections: 4 1/4 in TRS outputs and 1 1/4 in headphone output
```

- **Price:** £324.91 [^2]
- **Summary:** The Roland Rubix44 is a compact 4-in/4-out USB audio interface with four low-noise microphone preamps, Hi-Z inputs, hardware compression and low-latency monitoring. It supports up to 24-bit and 192 kHz recording, with MIDI connectivity and compatibility with Mac, Windows and iPad.
- **Ideal For:** It suits portable 4-channel recording because its compact 1.8 kg metal design provides four simultaneous inputs and outputs, 24-bit/192 kHz audio, MIDI In/Out and iPad compatibility.
- **Additional Sources:** [^3]

### TASCAM Mixcast 4 Podcast Station with Recorder and USB Audio Interface
```yaml
product: tascam-mixcast-4-podcast-station-with-recorder-and-usb-audio-interface
brand: TASCAM
price_gbp: 368.49
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
bit_depth: 24
sample_rate: 48
phantom_power: true
input_connections: 4 XLR/TRS combo mic inputs, 3.5 mm TRRS line input, 6.3 mm TRS line inputs, USB Type-C, Bluetooth
number_of_channels: 14
output_connections: 4 x 6.3 mm headphone outputs, 3.5 mm TRRS headphone output, 6.3 mm TRS monitor outputs, 3.5 mm stereo line output, USB Type-C
```

- **Price:** £368.49 [^4]
- **Summary:** The TASCAM Mixcast 4 is an all-in-one podcast mixer, multitrack recorder, and USB audio interface with a touchscreen, sound pads, auto-mixing, and direct SD card recording. It suits solo creators, interview podcasts, livestreamers, and productions with up to four microphone users.
- **Ideal For:** It suits portable 4-channel audio interface needs with four mic inputs, 14-channel recording, 24-bit/48 kHz operation, direct SD card recording, four headphone outputs, and a compact standalone design.
- **Additional Sources:** [^5], [^6]

### RODE RODECaster Pro II Integrated Audio Production Studio
```yaml
product: rode-rodecaster-pro-ii-integrated-audio-production-studio
brand: RODE
price_gbp: 427.56
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
bit_depth: 24
sample_rate: 48
phantom_power: +48 V
input_connections: 4 x combo XLR-1/4in TRS mic/line/instrument, 2 x USB-C, Bluetooth
midi_compatibility: true
number_of_channels: 9
output_connections: 2 x balanced 1/4in line, 4 x 1/4in headphone, 2 x USB-C
```

- **Price:** £427.56 [^7]
- **Summary:** The RODECaster Pro II is an integrated audio production studio for podcasters, streamers, musicians, and content creators. It combines four mic, line, and instrument inputs with nine assignable channels, onboard APHEX processing, programmable SMART pads, dual USB-C interfaces, multitrack recording, and four headphone outputs.
- **Ideal For:** It suits users seeking portable 4-channel audio interfaces because it has four combo inputs, four headphone outputs, dual USB-C connectivity, onboard recording, and a compact desktop design.
- **Additional Sources:** [^8]

---
## References & Sources
[^1]: B&H Photo Video, accessed 2026-09-13. https://www.bhphotovideo.com/c/product/1722327-REG/universal_audio_volt476p_volt_476p_portable_4x4.html
[^2]: B&H Photo Video, accessed 2026-09-13. https://www.bhphotovideo.com/c/product/1310584-REG/roland_rubix44_4x4_usb.html
[^3]: Full Compass, accessed 2026-09-13. https://www.fullcompass.com/prod/524659-roland-rubix44-4x4-usb-audio-interface-for-mac-pc-ios
[^4]: Broadcasters General Store, accessed 2026-09-13. https://bgs.cc/tascam-mixcast-4-podcast-mixer/
[^5]: Best Buy, accessed 2026-09-13. https://www.bestbuy.com/product/tascam-mixcast-4-podcast-station-black/J7GXGS634W/sku/11145896
[^6]: Sam Ash, accessed 2026-09-13. https://www.samash.com/tascam-mixcast-4-podcast-workstation
[^7]: B&H Photo Video, accessed 2026-09-13. https://www.bhphotovideo.com/c/product/1696424-REG/rode_rcp2_rodecaster_pro_2_podcasting.html
[^8]: Guitar Center, accessed 2026-09-13. https://www.guitarcenter.com/RODE/RODECaster-PRO-II-Integrated-Audio-Production-Studio-1500000376142.gc