Sugden A21a Class A Integrated Amplifier
Sugden A21 Signature Integrated Amplifier
The Sugden pure class A design provides affordable high-end performance from a beautifully engineered single box integrated amplifier. Compact in size with a simple but stylish design, the A21 is possibly the only amplifier you will ever need. With many of the original A21’s still in daily use after fifty years, it could also last a life time.
Providing a large soundstage and depth to all types of music, the A21 is an amplifier you can listen to for hours without fatigue. The single ended circuit provides impressive dynamics and incredible bass.
Product Features and Specifications
- Inputs – Five line level or four line level with optional MM/MC phono board.
- Outputs – Pre-Amplifier Out (Variable), tape out (fixed) and one pair stereo multi-way binding posts.
- Remote Control – Volume up/down.
- Earth terminal.
- Line Level Sensitivity – 170mV for maximum output.
- Phono Input Sensitivity – 3mV/Moving Magnet, 0.2V/Moving Coil for maximum output.
- Phono Loading – Moving Magnet 47K, Moving Coil 100 ohm.
- Power Output – 23 watts per channel into 8 ohms both channels working.
- Frequency Response – 10Hz to 20kHz +/- 0.5dB.
- Bandwidth – 6Hz to 200kHz +/- 3db.
- Signal to Noise – >83db.
- Nett Weight – 11kg.
- Dimensions – 92mm x 430mm x 350mm (HWD).
Usually ready in 2-4 days —

Sugden A21a Class A Integrated Amplifier
Phono Board Option: Without Phono
753-755 Nicholson Street
Carlton North VIC 3054
Australia
0394195070
check_circle Pickup available, usually ready in 2-4 days