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Superlux HA4D is a portable four-channel headphone amplifier that is designed for critical listening and monitoring. With its sound quality and affordability, it is aimed especially at smaller studios or bands. The amplifier allows the signal distribution to be split into four 3.5mm jack headphone outputs with independent volume controls and a MUTE function. An external audio signal can be fed to the AUX IN (3.5 mm jack) input. The low impedance of 47 Ohm ensures sufficient volume for most headphones, and the frequency range of 10 Hz - 50 kHz is also impressive. A 50 cm long jack-to-jack 3.5 mm cable is included. A USB-C port is used for power.
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