This DH-220 is fully functional and in very good condition.
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 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