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Solid State Logic Alpha 8 A/D-D/A Converter/Expander and USB Audio Interface , $899.99 - Add to Cart Skip to Product Information

Solid State Logic Alpha 8 A/D-D/A Converter/Expander and USB Audio Interface

8-in/8-out A/D-D/A Converter and Audio Interface Expander with ADAT, S/PDIF, and 18-in/18-out USB Audio Interface
Solid State Logic Alpha 8 A/D-D/A Converter/Expander and USB Audio Interface
Solid State Logic Alpha 8 A/D-D/A Converter/Expander and USB Audio Interface

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Solid State Logic Alpha 8 A/D-D/A Converter/Expander and USB Audio Interface
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Maximize the Potential of Your Recording Setup

This article was Written By

Our Product Research Team

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Solid State Logic has a streamlined, professional solution for expanding the I/O of your existing audio interface. Building on the success of the company’s renowned Alpha Link lineup, Alpha 8 is a professional-grade 8 x 8 A/D-D/A converter that’s ideal for expanding your audio interface via ADAT and S/PDIF. The Alpha 8 also functions independently as an 18 x 18 USB audio interface. This impressive versatility, combined with class-leading conversion, flexible routing, and unrivaled SSL audio performance, makes the Alpha 8 indispensable for unlocking the full potential of your recording setup.

SSL audio quality, versatile configurability

Equipped with SSL’s state-of-the-art 32-bit/192kHz converters, Alpha 8 delivers no-compromise audio with massive dynamic range along with vanishingly low distortion, noise, and crosstalk. Its line-level connectivity lets you extract maximum performance from your outboard processing gear, samplers, synths, and drum machines. Alpha 8’s routing can be configured in many different ways to meet your precise needs. Whether you need a simple bidirectional analog-to-ADAT+S/PDIF converter, an 18-in/18-out USB audio interface, or any combination of the two, Alpha 8 gives you the routing flexibility to accommodate even the most challenging projects.

Rock-solid performance, smooth integration

With the Alpha 8, each analog input and output operating level can be set individually to +9, +18, +20, or +24dBu, ensuring optimized signal integrity and maximized headroom for any connected devices. Whether you’re running rackmount equipment, analog mixers, 500 Series modules, or monitor controllers, every connection to your gear is fully optimized. On the digital side, word clock in and out, ADAT, and S/PDIF clocking options ensure Alpha 8 delivers optimal digital audio handling, guaranteeing rock-solid, jitter-free performance and smooth integration into your studio environment while streamlining your workflow.

A world of workflow potential

The Alpha 8’s versatile analog and digital routing unlocks a world of workflow potential. Create hardware insert paths for 500 Series modules, outboard equalizers, compressors, or hardware effects units. Integrate external metering or amp simulators via S/PDIF. Another option would be to use Alpha 8 as your primary interface, seamlessly connecting digital and analog devices to your DAW using USB-C. For electronic music producers, the Alpha 8’s outputs are capable of outputting CV to control synthesizers and other CV-equipped gear.

Alpha 8 + SSL 18

The Solid State Logic Alpha 8 is a superior audio interface expander for engineers, artists, and producers seeking to expand their studio with world-class SSL sound quality. For the ultimate SSL setup, however, we recommend you consider combining the Alpha 8 with the SSL 18 high-performance 26 x 28 USB audio interface, which would instantly expand SSL 18’s I/O via ADAT, adding eight channels (with one Alpha 8) or 16 channels (with two Alpha 8s).

The Solid State Logic legacy

Since its founding by Colin Sanders in 1969, Solid State Logic has followed a design philosophy that prioritizes the needs of artists, engineers, and producers. The company's products facilitate creativity by removing technical impediments and streamlining workflows. Firmly ensconced in the pantheon of pro audio greats, SSL helped shape the history of pro audio. Impressively, it continues to innovate, bringing its uncompromising quality and signature sonics to a new generation of artists and creators. Sweetwater is proud to offer you SSL’s pedigreed line of consoles, signal processors, and audio interfaces.

Solid State Logic Alpha 8 Features:

  • 8 x 8 A/D-D/A converter with ADAT, S/PDIF, and 18 x 18 USB audio interface
  • Professional audio interface expander solution
  • State-of-the-art 32-bit 192kHz conversion
  • Class-leading dynamic range, THD+N, and crosstalk specs
  • Input dynamic range: 120dB, output dynamic range: 123dB
  • Input THD+N: -110dB, output THD+N –108dB
  • 8 balanced line-level inputs and outputs
  • Up to 8 channels of analog-to-ADAT and ADAT-to-analog conversion
  • Configurable operating levels for each input and output
  • DC-coupled outputs are perfect for sending control voltages to CV-equipped gear
  • 10 digital inputs and outputs (8 channels of ADAT, 2 channels of S/PDIF)
  • Up to 2 channels of analog-to-S/PDIF and S/PDIF-to-analog conversion
  • Up to 2 channels of S/PDIF-to-ADAT and ADAT-to-S/PDIF conversion
  • S/PDIF available on coaxial or optical connectors
  • Flexible conversion configuration
  • Physical outputs can be fed with a combination of analog, digital, and USB audio signals
  • 18-in, 18-out USB audio interface
  • Record and playback to all 8 channels of analog and 10 channels of digital I/O via USB
  • High-current front-panel headphone jack lets you audition any individual input or output (or stereo pair)
  • 3 different settings to optimize for your headphones: Standard, High Impedance, High Sensitivity
  • Dedicated front-panel input and output meters
  • Word clock in and out + input termination switch
  • Clock internally or from incoming ADAT, S/PDIF, or word clock
  • SSL Production Pack (a $1,100+ value) included with registration

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.