The Sugden Audio Masterclass LA-4 preamplifier is a high quality active preamplifier featuring a host of inputs and outputs. It makes a perfect combination with either the Sugden Masterclass or Sapphire power amplifiers. High-end touches include gold plated circuit boards, relay switching of all inputs and output and a sophisticated class A output stage. The Sugden LA-4 is a high gain amplifier that provides an iron fist of control over any power amplifier. The electronic circuitry has been developed to offer the best possible sonic performance without compromise including the use of specially selected transistors and capacitors to provide the best signal preservation. The gain stages are each powered by current shunt differential power supplies, which enable the fastest transients and most powerful crescendos with true musical empathy.

Technical Specifications 

Inputs – Four line level inputs, one tape input, one balanced input, bypass input
Outputs – Two line level outputs, fixed tape output, balanced output
Remote Control – Motorised remote control RC5 Compatible
Recording – Tape output defeat
Input Sensitivity – 100mV for 1 Volt out
Maximum Output – 10 Volts
Frequency Response – +/-0.1dB 15Hz-30kHz
Bandwidth – 6Hz-300kHz
Signal to Noise – >90dB
Gross Weight – 7kg
Dimensions W x H x D (mm) – 430 x 75 x 350
Finish Options –
Graphite and Titanium £4,520
Gunmetal Blue, Grey, Bronze, Copper, Orange, Green 3, Green 2, Apple Green, Blue 3, Blue 2, Turquoise, Violet and Red £4,690