Sugden Masterclass HA-4 Headphone Amplifier


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The HA-4 is not only a state of the art class A headphone amplifier, it can also be used as a compact high-end pre-amplifier.

The design shares many similarities to Sugden’s top of the range Sapphire DAP-800 and will drive any dynamic headphone. Featuring Sugden VCV circuit and coupled to a pure class A zero feedback mosfet output stage.

The HA-4 is unconditionally load stable with a discrete constant voltage series power supply and a high input impedance ensures absolute minimal loss of signal with perfect current gain.

Standard finish options are either black or silver – please contact us directly for Sugden’s custom colour options service!



Additional information


Black, Silver