Designed for the highest fidelity in headphones. Using four 6SL7 valves for the clearest of sound. Developed for studio use with the ability to drive any headphones with one watt of power utilising an enhanced triode mode circuitry.
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 is similar to our 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. A high input impedance ensures absolute minimal loss of signal with perfect current gain.