The Sugden Masterclass IA-4 is Sugden's flagship and most popular integrated amplifier. Weighing a substantial 20 kilos the IA-4 has a purposeful look and impressive build quality. Plenty of input and output facilities are on offer including a high quality phono stage. The class A power output circuit has been upgraded from the A21 series with a larger power supply and improved soothing and output capacitors. Gold plated circuit boards, full relay switching and a precision input selector switch offer further detailing. The pre-amplifier section of the IA-4 is a bespoke design, with surprising clarity and detail. The most noticeable feature is the ability to create a large performance with depth and height on any type of music. Specifications Inputs: Three line level, tape, MM phono, balanced Outputs: Variable pre-out, fixed out, loudspeaker out Volume Control: Remote control RC5 Compatible Recording: Monitor and record off Line Input Sensitivity: 125 mV Phono Input Sensitivity: 2 mV (MM) Power Output: 33 Watts per channel into 8 Ohms Frequency Response: +/-1 dB 14 Hz-200 kHz Bandwidth: 6 Hz-300 kHz Signal to Noise: >84 dB Gross Weight (packed): 20 kg Dimensions (H x W x D): 165 × 430 × 440 mm
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