Masterclass LA-4 Pre-amplifier
The Sugden Masterclass LA-4 is a line level stereo pre-amplifier with authority, finesse and the capability to develop a sound stage with imaging, dimensional realism, and time/space elements in perfect harmony. The units primary function is ‘Simply More Music’ with a neutrality to allow end users to choose mating components and obtain customised performance.
The LA-4 was developed to complement the Sugden Masterclass Power Amplifiers and at its heart has dual mono, dc-coupled, Class A, current feed back gain stages. 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.
The LA-4 has provision for stereo pairs of balanced inputs, four single ended RCA (phono) inputs, a By-Pass input, Input and output recording facility, two main pre-amp outputs and a balanced output.
Specifications
● Input Sensitivity - 100mV for 1 Volt out.
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● Maximum Output - 10 Volts.
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● Frequency Response - 15Hz to 30kHz +/- 0.1dB.
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● Bandwidth - 6Hz to 300kHz +/- 3dB.
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● Signal to Noise - >90dB.
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● Distortion - <0.006% @ 1kHz, 1 Volt out.
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● Nett Weight - 7kg.
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● Overall Dimensions (including terminals) - 75mm x 430mm x 350mm (HWD).
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