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 construction of SW1X Pre-amplifiers The basic functions of a pre-amplifier can … Continue reading SW1X Line Pre-Amplifier Products Overview