Solid State Logic ALPHA-8 Ultimate Audio Interface Expander

The SSL ALPHA 8 is designed as the ultimate audio interface expander, delivering pristine audio conversion and professional-grade connectivity for modern production setups. Building on the heritage of the Alpha Link series, it combines next-generation 32-bit/192 kHz conversion with ultra-low distortion, exceptional dynamic range, and class-leading analogue performance. Whether you're upgrading your existing interface or expanding a hybrid studio, the ALPHA 8 provides reliable, high-fidelity signal flow that preserves every detail of your sound.

With 8 balanced line inputs and outputs, the ALPHA 8 integrates seamlessly with outboard gear, synthesizers, and monitoring systems. It supports up to eight channels of analogue-to-ADAT and ADAT-to-analogue conversion, along with S/PDIF I/O for maximum flexibility. Configurable operating levels let you match the unit precisely to your external equipment, while DC-coupled outputs enable creative workflows such as sending CV to modular synthesizers. Multiple digital routing options-including coaxial and optical S/PDIF-ensure compatibility with a wide range of studio devices.

In addition to its standalone conversion capabilities, the ALPHA 8 can function as a full 18-in, 18-out USB audio interface, allowing simultaneous access to all analogue and digital I/O. Its flexible routing empowers you to feed the physical outputs with any combination of analogue, digital, or USB audio. A high-current, front-panel headphone output provides instant confidence monitoring of any input, output, or stereo pair, complete with three optimized listening modes. Clear front-panel metering and comprehensive clocking options-including word clock I/O and sync via ADAT or S/PDIF-ensure dependable integration in any studio.

To round out the package, SSL includes the SSL Production Pack, an extensive software bundle featuring premium plug-ins, creative tools, and DAW integrations. This includes SSL Vocalstrip 2, Drumstrip, Melodyne Essential, Ableton Live 11 Lite, and subscriptions to top music-production services such as Auto-Tune Unlimited and Output Arcade. Together, the ALPHA 8 and its software suite provide a complete professional workflow for recording, mixing, sound design, and hybrid studio production.

Product Specifications:

Sample Rate: 48 kHz, Bandwidth: 20 Hz to 20 kHz

Measurement device output impedance: 40 Ω (20 Ω unbalanced)

Measurement device input impedance: 200 kΩ (100 kΩ unbalanced)

Tolerance: ±0.5 dB or 5%

Power consumption: <30 Watts

Inputs:

Input line-ups: +24 dBu, +20 dBu, +18 dBu, +9 dBu

Frequency response (20 Hz–20 kHz): ±0.1 dB

Dynamic range (A-weighted): +24 dBu: 120 dB, +9 dBu: 114.5 dB

THD+N (-1 dBFS): -110 dB / 0.00034%

Input impedance: 10 kΩ

Crosstalk: -140 dB

Outputs:

Output line-ups: +24 dBu, +20 dBu, +18 dBu, +9 dBu

Frequency response (20 Hz–20 kHz): ±0.02 dB

Dynamic range (A-weighted): +24 dBu: 123 dB, +9 dBu

THD+N (-1 dBFS): -108 dB / 0.00038%

Output impedance: 150 Ω

Crosstalk: -140 dB

Headphones:

Output levels: +18 dBu, +10 dBu, 0 dBu

Frequency response (20 Hz–20 kHz): ±0.02 dB

Dynamic range (A-weighted, +18 dBu): 124 dB

THD+N (+18 dBu at -1 dBFS): -106 dB / 0.0005%

Output impedance: <1 Ω

Latency:

Analogue to ADAT: 0.09 ms @ 96 kHz, 0.61 ms @ 48 kHz

USB roundtrip latency (32-sample buffer, 96 kHz): Mac 5.1 ms, Windows 3 ms (Safe Off), 5 ms (Safe On)

USB roundtrip latency (32-sample buffer, 48 kHz): Mac 7.8 ms, Windows 5 ms (Safe Off), 7.4 ms (Safe On)

Product Weight: 3.6 kg / 7.89 lbs

Product Dimensions (L × W × H): 11.6" × 19" × 1.7"

Depth (including front panel controls and rear panel connectors): 294 mm / 11.6 inches

Depth (excluding front panel controls and rear panel connectors): 257.8 mm / 10.1 inches

Shipping Weight: 5.6 kg / 12.34 lbs

Shipping Dimensions (L × W × H): 14.2" × 24.8" × 3.9"