*SOLD* The 521 received enthusiastic reviews in Hi-Fi magazines, both in the UK and elsewhere. As well as offering good performance it was seen as providing value for money and excellent styling. The 500 units also were given a UK Design Council award for their appearance and ergonomics.

• Alternating Current supply (AC) / 110; 120; 220; 240 Volt

• Loudspeaker
• – This model requires external speaker(s).

• Power out
• 50 W (undistorted)

• Material
• Wooden case

• Model: Stereo Amplifier 521 –

• Shape
• Book-shelf unit.

• Dimensions (WHD)
• 292 x 117 x 280 mm / 11.5 x 4.6 x 11 inch

• Notes
• 2 x 25 watts output at 0.5% harmonic distortion
  Frequency responce 20 to 25,000 Hz
  Bass Control; ± 10dB @ 70Hz, Treble Control ± 10dB @ 10kHz.
  Rumble filter; -5dB @ 30Hz increasing at lower frequencies
  Treble filters 1;  6.5kHz -3dB, 10kHz -25dB
  2;  4.5kHz -3dB,  9kHz -40dB
  Loudness control; at 1kHz reference (-20dB), 70Hz +10dB, 10kHz +5dBOutputs for Tape Recording and headphonesInputs for;
  1 Tape, 2 Radio, 3 Ceramic cartridge & 4 Magnetic Cartridge.