All Modified: Balanced Trans>Uber>Brickwall/Shunyata Defender>RevolutionMacMini/Amarra>Kitsune Singxer/Gustardx20pro; DIY ZBIT, ZRock2, CSP3, Torii IV, Simple Wave 300B, HR1; Pi PCs and DIY PCs, ICs, USB, I2S, Speaker; SR and aluminum w ball bearing feet mainly