Sugden Audio A21SE Signature Pure Class ‘A’ Line Amplifier

Sugden A21SE Signature Remote Volume Pure Class ‘A’ Integrated Amplifier (Line) – 30 Watts

The Special Edition A21SE Signature Integrated Amplifier builds on the strengths of the classic A21, offering pure class ‘A’ single ended operation, the sound remains distinctively ‘Sugden’.

Upgraded with a fifty percent larger power supply and increased power output, dynamics are even more impressive. A sophisticated pre-amplifier stage is another improvement on the A21. This provides greater clarity without added brightness producing crystal clear highs. The larger power supply provides greater control over a wider range of loudspeakers and improved micro dynamics for low level listening.


Inputs – Five line level operated by relays.

Outputs – Pre-out (variable), tape out (fixed), one pair of stereo multi-way binding posts.

Remote Control – Volume up/down.


Line Input sensitivity – 110mV for maximum output.

Power Output – 30 watts pure Class ‘A’ into 8 ohms both channels driven.  40 watts pure Class ‘A’ into 4 ohms both channels driven.

Frequency Response – 20Hz to 20kHz +/- 0.5dB.

Bandwidth – 12Hz to 141kHz +/- 3dB.

Signal to Noise – >84dB.

Packed Weight – 15 kgs.

Dimensions – 115mm x 430mm x 360mm (HWD).

Recommended Retail Price – AUD$6,295.00.

E. & O. E.

Sugden A21SE Signature Pure Class ‘A’ Line Amplifier – Standard finish in Titanium.

Sugden A21SE Signature – Back Panel.

Sugden A21SE Signature – Electric Blue (3).

Sugden A21SE Signature – Custom Orange finish (extra cost option).


Sugden A21SE Signature Pure Class ‘A’ Line Amplifier – input selection switch on the right side with volume control centered.


Sugden A21SE internal view showing dual mono configuration, separate pre-amplifier section and custom toroidal power transformer.




Sugden A21SE Signature Pure Class ‘A’ Integrated Amplifier in Graphite finish.