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Our Phone Box Headphone amplifier adds headphone functionality to any Music First Audio Preamplifier.

The phone box turns the output of a Classic, or Baby Reference preamplifier into a dedicated high quality headphone amplifier.

It features a solid state, custom designed headphone amplifier circuit which is powered by an external 12V DC power supply.

The unit is housed in a case measuring 50mm x 110mm x 140mm
The Phone Box is priced at £350.00 plus VAT.

Priced at $455 USD plus local taxes.