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Hafler DH-220

Stereo Power Amplifier Kit (1979)

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Hafler DH-220


The DH-220 circuit is a refinement of the DH-200 design, a Hafler landmark which has achieved worldwide recognition, and has elicited glowing reviews since its 1979 introduction.

As in the DH-110 preamplifier, particular attention has been paid to component quality, using polypropylene or film capacitors wherever feasible, for example, for superior sound.

Combining the latest power MOSFET technology with uniquely simple and effective circuit topology reduces distortion of all types, and at all power levels, over the full audio frequency spectrum, to the vanishing point.


Power output: 115 watts per channel into 8Ω (stereo)

Frequency response: 6Hz to 60kHz

Total harmonic distortion: 0.02%

Damping factor: 60

Input sensitivity: 1.55V

Signal to noise ratio: 100dB

Semiconductors: 26 x transistors, 8 x MOSfet, 29 x diodes, 4 x zener diodes, 1 x diode bridge

Dimensions: 5-1/8 x 16 x 10-1/2 inches

Weight: 26lbs

Year: 1984


instruction/owners manual   English -

schematic   English -

brochure   English - Jeepo65

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Reviewed Jan 29th, 2015 by Sealtest

Great sound, cheap price. This amp also has many upgrade options.



re: DH-220

I've had one built from the kit version since 1984 and other than having to have a couple of joints resoldered a few years back, it still sings. Currently using it to drive a pair a Magnepan MG-1.5QRs with plenty of power.

This website is not affiliated with or sponsored by Hafler. To purchase DH-220 spares or accessories, please contact the company via their website or visit an authorised retailer.