SW1X Audio Design™ LPU III Balanced Performance Level 3 Signal OPTs de-coupled Phono Pre-Amplifier   The LPU III Balanced is a Signal Output Transfomer (OPT) de-coupled model of the LPU III. Just like with all our Balanced versions, highest Quality Signal OPTs further improve transparency & dynamics. The classic RIAA circuit is made of specially … Continue reading SW1X LPU III Balanced Phono Pre-Amplifier