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Modified Hafler DH-220 Amplifier |
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Top view. Mods include all new electrolytic caps, polypropylene bypasses on power supply and feedback caps. Input coupler changed to MIT Multicap. Power supply caps increased from 10,000 to 27,000mfd. Soft start circuit added as well. |
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Closeup showing PP bypass caps. Note mono bridging switch in lower left allowing bridged mono operation. |
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Soft start circuit based on Walt Jung's Audio magazine design. 10 ohm 50 watt power resistor is mounted on the backside of the face, lower center. |
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