SW1X Audio Design® Range of High End Line Pre-Amplifiers It is all about Quality and not Quantity.   All SW1X Phono/Line Pre-Amplifiers products are made to order, are available on different Performance/Price Levels and specified according to a variety of versions. SW1X Performance System   The basic functions of a pre-amplifier can be summarised as … Continue reading SW1X Line Pre-Amplifier Products Overview