Sugden Masterclass LA-4 Pre-amplifier

The Sugden Masterclass LA-4 Pre-amplifier is a high-quality active pre-amplifier delivers exceptional audio performance. Featuring gold-plated circuit boards, relay switching, and a sophisticated class A output stage, this pre-amp ensures precise control over power amplifiers. The LA-4 is compatible with both Masterclass and Sapphire power amplifiers uses specially selected transistors and capacitors for optimal signal preservation. It includes four line inputs, balanced input, and outputs, all powered by current shunt differential power supplies, delivering fast transients and powerful crescendos.