Sugden A21 Signature integruotas stiprintuvas

Sugden's first commercial amplifier was the A21 in the mid-1960s. It is generally recognised as the first commercial, solid state Pure Class A amplifier to be available for audio enthusists. It was a very special amplifier with a single-ended Class A output configuration and current feedback. This design concept did not appear generally in commercial audio amplifiers until over a decade later. Capable of recreating a musical performance well in advance of its peers, it made the name of Sugden synonymous with musical performance. The true potential of the output configuration was realised in the 1980s when it was coupled to modern components, reduced internal filtering and multi emitter solid state output devices.

The result was an amplifier of extended and more controlled bass and treble but still retaining the wonderfully detailed mid range of the original design. The amplifier became the A21a, a reference amplifier on many continents. Further improvements have achieved significant enhancement of performance and the amplifier has been rebranded as the Sugden A21 Signature.

Facilities
Inputs - Five line level (four on A21a Integrated), optional mm/mc phono
Outputs - Pre-out (variable), tape out (fixed), one pair of stereo multi-way binding posts
Remote control - Volume up/down

Specifications
Line Input sensitivity - 170mV for max out
Phono input sensitivity - 3mV/mm, 0.2mV/mc for max. output
Phono Loading - MM 47K MC 100 Ohm
Power output - 23 Watts into 8 Ohms both channels working
Frequency response - +/-dB 10Hz-20kHz
Bandwidth - +/- 3dB 6Hz-200kHz
Signal to noise - >83dB
Gross weight (packed) - 11kgs
Dimensions - 92 x 430 x 350mm