One of my first builds. Got one to see if I could do it AND I DID!!!! I usually assemble guitar pedals so this was my first rack mounted DIY preamp. Really happy to have it. Pairing it with the Royal Blue and the 4000 colour module. It's eye(ear)-opening routing Logic through this mono channel - synths, bass, guitars, etc. Excellent instructions, and wonderful, prompt support after the finished build (I had a dumb question that was professionally answered). Will be adding an identical second channel soon for stereo work.