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Pro-Ject Amp Box S2 Stereo Power Amplifier (OPEN)

Pro-Ject Amp Box S2 Stereo Power Amplifier (OPEN)

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Regular price $266 In stock now!
Regular price $299 Sale price $266 In stock now!
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Pro-Ject Amp Box S2 Stereo Power Amplifier

A 23 W ultra-compact, trigger-controlled single-ended power amp 

The sonic guideline for Pro-Ject amplifiers is the homogeneous liquid sound of audiophile tube amplifiers, with the dynamic power and great bass response of the class-D circuits.


  • More power and further improved performance
  • Isolated speaker sockets
  • Trigger input
  • Trigger output for another Amp Box S2


Output power (4 ohm, 8 ohm): 2 x 23 W, 2 x 35 W

Input: Stereo line level RCA pair

Input sensitivity: 330 mV

Input impedance: 20 kOhm

Output:  4 mm bananas, spades, or bare wire

Trigger: 12V DC switching voltage, 2.5 mm co-axial jack

External power supply: 20 V, 3 A DC, 100 - 240 V, 50/60 Hz

Dimensions (WHD): 4" x 1.5" x 5.35" (103 x 37 x 136 mm)

Weight (without power supply): 0.85 lb