RCA preamplifier
A single ended preamplifier based on the Audio Injector Analogue Breakout Standard v1 (AI-ABS v1)
https://github.com/Audio-Injector/AudioInjector-Analogue-Breakout-Standard
https://www.audioinjector.net/rca-preamp
https://shop.audioinjector.net/detail/Sound_Cards/RCA+preamplifier
Check the balanced (XLR) preamplifier here : https://github.com/Audio-Injector/XLR.preamplifier.AI-ABSv1