# 高端 USB 音频接口应具备哪些功能？ — 经过验证的规格比较

> 所有规格数据均已通过官方渠道验证。

What features should I look for in a high-end USB audio interface?

## 产品列表

### Focusrite Scarlett 18i20 4th Gen
```yaml
product: focusrite-scarlett-18i20-4th-gen
brand: Focusrite
price_gbp: 479.61
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
bit_depth: 24-bit
sample_rate: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
phantom_power: 48V (front-panel or software)
number_of_inputs: 18 inputs (8 mic preamps, 2 front instrument, line, ADAT, S/PDIF, MIDI)
number_of_outputs: 20 outputs (10 line outputs, 2 headphone outputs, ADAT, S/PDIF, MIDI)
```

- **价格:** £479.61 [^1]
- **概述:** 高输入/输出 USB-C 音频接口，配备八个第四代 Scarlett 麦克风前置放大器、24-bit/192 kHz 转换器、双 ADAT 以便扩展，具备 Auto Gain 和 Clip Safe 工作流程功能，以及双耳机输出；适用于需要大量 I/O 的项目型和中型专业录音室。包含用于路由与移动控制的 Focusrite Control 2。
- **最适合:** 非常适合作为高端USB音频接口，因为它提供24-bit/192 kHz转换、8个高增益（69dB）话放，以及丰富的模拟和数字I/O，可实现灵活的路由和扩展。
- **附加来源:** [^2], [^3]

### Universal Audio Volt 876
```yaml
product: universal-audio-volt-876
brand: Universal Audio
price_gbp: 737.13
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
bit_depth: 32 bit
sample_rate: 44.1, 48, 88.2, 96, 176.4, 192 kHz
phantom_power: +48V (selectable per channel)
number_of_inputs: 24 (8 analog, 16 via ADAT)
number_of_outputs: 28 (8 analog, 20 via ADAT/optical)
```

- **价格:** £737.13 [^4]
- **概述:** Volt 876 是一款机架式 24-in/28-out USB-C 音频接口，配备八个数字控制的麦克风/线路前置放大器、机载复古前级和 1176 风格压缩器仿真、32-bit/192 kHz 转换、ADAT 扩展、word clock 和 MIDI I/O。面向需要高通道数、硬件色彩处理和在单台 1U 机箱内实现全面 I/O 的专业及高级家庭录音室。
- **最适合:** 优秀的高端 USB 接口应提供高采样率和位深、低延迟 I/O、每通道幻象电源，以及可扩展的 ADAT 通道；Volt 876 提供 192 kHz 采样率、32 位转换、每通道可选的 +48V、八个模拟前置放大器和 ADAT 扩展。
- **附加来源:** [^5], [^6]

### Solid State Logic SSL 2+
```yaml
product: solid-state-logic-ssl-2
brand: Solid State Logic
price_gbp: 173.4
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
latency: Under 5 ms
bit_depth: 24 bit
sample_rate: 44.1, 48, 88.2, 96, 176.4, 192 kHz
phantom_power: 48V
number_of_inputs: 2 x XLR-1/4in combo mic/line/instrument, MIDI in
number_of_outputs: 4 x analog, 2 x headphone, MIDI out
```

- **价格:** £173.4 [^7]
- **概述:** The SSL 2+ is a USB-C audio interface with two SSL microphone preamps, 24-bit/192 kHz conversion, Legacy 4K analogue enhancement, and zero-latency monitor mixing. Its extra outputs, independent headphone outputs, and MIDI I/O make it well suited to home studios, producers, and collaborative recording.
- **最适合:** 它适合任何寻求高端 USB 音频接口的用户，因为它集成了 24-bit/192 kHz 转换、两个 SSL 前置放大器、48V 幻象电源、低于 5 ms 的延迟、四个模拟输出、独立耳机监听以及 MIDI I/O。

---
## 参考来源
[^1]: Recording Magazine (lists retailer price), 访问日期 2026-09-13. https://www.recordingmag.com/focusrite-scarlett-18i20-4th-gen/
[^2]: Focusrite (official store), 访问日期 2026-09-13. https://us.focusrite.com/products/scarlett-18i20
[^3]: Guitar Center, 访问日期 2026-09-13. https://www.guitarcenter.com/Focusrite/Scarlett-18i20-4th-Gen-18x20-USB-C-Audio-Interface-1500000439315.gc
[^4]: Universal Audio (product page), 访问日期 2026-09-13. https://www.uaudio.com/products/volt-876
[^5]: Perfect Circuit, 访问日期 2026-09-13. https://www.perfectcircuit.com/universal-audio-volt-876.html
[^6]: Vintage King, 访问日期 2026-09-13. https://vintageking.com/universal-audio-volt-876-usb-2-0-audio-interface
[^7]: Promedia, 访问日期 2026-09-13. https://shop.promedia.ee/products/ssl-2