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Sugden Audio Masterclass HA-4 Headphone Pre-amplifier

$2,895.00 $1,999.00

recommendedHigh end Class ‘A’ headphone pre-amplifier. Handcrafted in England.

In stock

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PLEASE NOTE: Ex-Display Unit – One Only!

The Sugden 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 Sugden 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.


Inputs – One Balanced Pair XLR and One stereo pair Phono Connectors Gold plated.
Outputs – One 6.35mm Phono Jack and One stereo pair Phono sockets.
Input Impedance – 20Kohms.
Gain – 16dB.
Channel Separation – >90dB.
Frequency Response – 20Hz – 0.3dB to 30kHz -0.5dB.
Signal to Noise – >95dB.
Output Impedance – 1 Ohm.
Overall Dimensions – 250mm (W) x 80mm (H) x 310mm (D).
Weight – 4.5kg.