DIY Recording Equipment

PR502 2-Slot 500-Series Chassis Kit with External Power Supply


  • Full Kit
  • Step-by-Step Guide
  • Supported
  • Intermediate

The PR502 is a 2-channel, high-current, 500-series chassis in a desktop or 19" rack-mount format. The assembly process is fairly simple, and does not require dealing with wall power.

Rugged and refined

The PR502's minimalist, all-black chassis is made from anodized aluminum and powder-coated steel. The compact case fits into any desktop setup, while the optional rack ears make the PR502 compatible with standard 19" racks.

High-current, low-noise

Our custom, universal power supply provides up to 250mA of clean current per channel—almost double the 500-series spec—and can power up to four PR502 racks (eight modules). Additional filtering and regulating in the chassis ensures that the power for your modules is stable and dead quiet.

Simplicity is a feature

While the PR502 is designed with an emphasis on simplicity, it is a full-featured 500 rack.

  • THRU jack for powering additional racks
  • LED power indicators for +/-16 and +48v
  • Neutrik XLR audio jacks
  • FEED feature turns your PR502 into a channel strip by patching channel 1 into channel 2 without a cable
  • Compressor link
  • 11" x 8" x 1.7" without rack ears

Beginner friendly

Assembling the PR502 is safe and easy, thanks to the external power supply and our step-by-step instructions.

Estimated build time: 1 hour


Unfortunately, the following brands' modules are wider than the 500-series specification and do not fit in the PR502:

  • Rupert Neve Designs
  • AudioScape

Customer Reviews

Based on 16 reviews

It’s been really great. More than powerful enough and completely noise free ✨👍🏼


What an incredible value! Thank you

Lane Gaffney
Great rack

This this sounds clean! I am so impressed for the money. The power supply seems like it will last. The tops and the bottom metal are a little flimsy but for the 1 hour build and sound I am very happy! Thank you

Alexander Mueller
Good quality 2-Slot Chassis Kit with some weak spots

Build process was easy, excellent building instructions online.Quality components included.The included power supply can easily power a 2nd device.
But the top and bottom cover lid is can easily bend the lid even with one finger if you press in the middle. it needs some supporting brackets/ spacers in the centre area. if this will be fixed, i would give 5-Stars Rating.

Excellent product and support

I had a hell of a time figuring out some issues with my build (PR502 + 2 color pres). Ended up needing to send in for repairs. Peterson was incredibly helpful and got my build working correct. Sounds great and can't wait to use it on some upcoming projects. Thanks guys!

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