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The garOA10 DOA PCB is the printed circuit board only, that is required to complete the garOA10 Discrete Operational Amplifier build. This board has been created by Gary Barnett of Barnett Industries. This DOA is a twelve transistor amplifier modeled after the legendary Neumann OA10. Gary has reformatted the layout to match the 2520 footprint. The original OA10 layout was a completely different proprietary footprint. The original OA10 was actually designed to run on +/-22 V rails but it should be noted that the garOA10 has been rigorously tested on +/-28 V rails with great success. So as a bonus, the garOA10 can be used in the GDIY 51x format which utilizes +/-24 V rails. These started out as an experiment at Gary's shop, hence the original garXXXX moniker. How do they sound? They are ironically closer to Scott's Platinum Super Dot than anything else we've heard. This was my reply to Gary when he asked what we thought. "The low end warmth is what got us about it too. So thick and hefty without being pillowy or flabby. I think it will rule for kick and bass. We also like the smooth top end!" Some of the applications the garOA10 DOA can be used for: Microphone Preamplifiers Line or Booster Amplifiers Lossless Combining Amplifiers Balanced Transformerless Amplifiers Equalizers and Compressors Additional features and specs: Industry standard 2520 footprint for plug-in or PC mount connections Low noise, high power output Low distortion Minimum load impedance is 75 ohms for full output voltage Power supply voltage is bi-polar +/- 12 VDC to +/- 28 VDC It should be noted that all 12 transistors are currently in production and easily obtainable garOA10 Full Kit Bundles including the PCB, are also available ***Please note: This item is a raw, unpopulated PCB only. All other components in pictures are for informational purposes only. This assembly is not for the beginner. Good assembly and solder skills are a must!

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