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CH02 Seventh Circle Audio 8 channel Chassis for microphone preamps and other recording gear

Welcome to Seventh Circle Audio!

Check out the NEW 500 series modules!

The same great tones in a different format!


High-quality DIY and fully assembled microphone preamplifiers for audio recording and studio uses.


Click HERE to check out all of our products!

Click HERE if you are looking to start a new SCA Rack!


If you are a recording studio, audio engineer, a musician looking to record, or a podcaster looking for a high-quality mic preamp at a great price, check out our line of microphone preamplifiers! We have brought back many of the same great designs including the N72, A12B, and J99, using the same high quality components that have always been used in the Seventh Circle Audio products. Our products are modeled after some of the most well known circuits in the industry, including API, Neve, Jensen, and SSL. The PC01 is a standalone single channel chassis, which is great for a podcaster or singer/songwriter who may only need one or two preamps. The CH02 chassis can accomodate up to 8 channels! There may also be a few NEW products in the works, so please check back often! Please feel free to email me us at SALES@SEVENTHCIRCLEAUDIO.COM and let us know what products you would like to see! If you need repairs on a product or need a module kit completed visit the support and return policy pages. THANK YOU!

Cory Peik, Owner @ SCA




Seventh Circle Audio provides professional quality electronic kits and support to handy audio recording engineers. Our flexible, modular preamp kits provide a full range of "colors" suitable for any application and are in daily use by recordists world-wide.

  • Assemble your own world-class microphone preamp by combining a CH02 or OneShot chassis and up to eight of our superb amplifier modules.

  • Customize your system to suit your current needs and expand as your studio grows. We currently have five preamp modules available, each with its own distinct personality, as well as a 2-channel active instrument DI!

  • Improve your skills as an engineer by learning about electronics, or order fully-assembled units to save time and still save money.

  • Impress your clients with what you can build, not just what you can buy.

  • Save money! Stretch your studio budget by investing your down time in DIY.

Each kit is thoroughly documented with assembly instructions, bills of material and schematics. All the documentation is freely downloadable so you can be ready to go before your kits arrive. If you get stuck or have questions, support is available via e-mail and the message board. We guarantee you won't be stuck with a non-working kit!

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