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Pro-ject Pre Box S Pre Amplifier
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Pro-ject Pre Box S Pre Amplifier

£182.50 Exc. VAT |  


Pro-Ject Pre Box S 

Functioning as the control center of the Pro-Ject Box Series, the Pre Box S performs basic input switching and high-performance audio amplification. 

Designed to drive one or more Amp Box S (mono or stereo), the Pre Box S features ultra-low-noise IC’s and dual-mono circuitry for exceptional audio fidelity. The highly shielded metal chassis effectively rejects any vibration and electromagnetic noise. 

12V Trigger switching is also included, so other components connected in series can be power activated with the Pre Box. The Box Design Switch Box S input extender can also be attached to increase the number of source inputs.

The included IR remote offers control over input selection and volume adjustment.


  • Neutral sound with superior noise floor
  • 2 Stereo Line-in
  • Motorised volume control
  • Premium components and assembly
  • SMD for short signal paths
  • Gold-plated connections
  • Remote control for on/off commands, input selection and volume
  • 12V trigger function
  • Metal case shields the electronics from vibrational and electromagnetic interference
  • Outboard power supply included


Frequency Response: 20Hz - 20kHz (± 0.2dB)
Noise Floor: -100dB (A weighted)
THD: 0.001%
Gain: 8.5dB
Pre-Out: 1 Pair RCA/Phono Sockets
Output Voltage Typically: 1V @ 1kHz
Line-Level Inputs: 2 x RCA Phono Socket Pair
Input Impedance: 20kΩ
Trigger (Trigger Pre): 12V DC Switching Voltage
Trigger Out: 2-Pole, 2.5mm Co-Axial Jack
Outboard PSU: 18V / 500mA DC
Standby Power Usage: < 1W
R/C Replacement Battery: CR2032 / 3V
Dimensions (W x H x D): 103 x 36 x 103mm
103 x 36 x 109mm (Incl. Sockets)
Weight: 630g (Without PSU)

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01733 350 878
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