Name: Sugden Masterclass LA-4 // New / Solid State Preamplifier
Brand: Sugden
SKU: 15481106923741
Price: 5295.00 USD
Availability: InStock

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The Sugden Masterclass LA-4 is the kind of line stage that earns its place not through any obvious character but through its absence — a genuinely inert, Class A design that refuses to insert itself between the listener and the recording. Transients arrive with snap and momentum; crescendos build real weight without being smoothed over. Gold-plated circuit boards, relay-switched inputs, and hand-selected transistors signal a fastidiousness that surfaces in long-term listening — the LA-4 stays composed when program material would cause lesser preamps to flinch. Connect it upstream of a capable power amplifier and it quickly reveals what that amplifier is truly made of.

Condition

NEW

Factory Specs

Inputs Four line level inputs, one tape input, one balanced input, bypass input

Outputs Two line level outputs, fixed tape output, balanced output

Volume Control Motorised remote control, RC5 Compatible

Recording Tape output defeat

Input Sensitivity 100 mV for 1 V out

Maximum Output 10 V

Frequency Response ±0.1 dB, 15 Hz–30 kHz

Bandwidth 6 Hz–300 kHz

Signal to Noise >90 dB

Distortion <0.006% @ 1 kHz, 1 V out

Dimensions 2.95 × 16.93 × 13.78 in (H × W × D)

Weight (packed) 15.4 lb

Warranty 5-year parts and labor (non-transferable); third-party components: 1-year full replacement, 2nd year labor-free replacement

Documentation

Sugden Masterclass LA-4 Owner's Manual

Liner Notes

A high quality active pre-amplifier featuring a host of inputs and outputs. The LA-4 makes a perfect combo with either the 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 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.

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