Pro-Ject Pre Box DS

Unit has very light use but original box is missing.The Pre Box is a pure single-ended Class A output stereo preamplifier
designed to give audiophile sound quality and connectivity in a small
compact package. The preamp circuitry is housed in a heavily shielded
metal chassis that rejects vibration and electromagnetic
noise reducing the noise floor to inaudible levels. With four relay
switched line-level inputs and separate preamp, record and subwoofer
outputs, the Pre Box DS can accommodate a multi source audio system
easily. Additionally, the volume control is relay controlled providing
accurate adjustment of gain in 64 one-decibel steps. An extremely low
output impedance allows for long cable runs without loss or
high-frequency roll-off. 12V trigger switching is provided allowing
other components to be turned on/off by the Pre Box DS.