Amp Box S

If you can find this product for sale in the UK at a lower price we will match it. The comparable product must be identical in spec, readily available from a UK dealer and available within the same timescales as we are offering. We offer genuine products intended for sale within the UK, not Grey imports as such the comparable product must not be a grey import.

Box Designs Amp Box S
Box Designs Amp Box SBox Designs Amp Box S


SKU: AmpBoxS

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For expert advice call 0118 982 0402

The Pro-Ject Box Design Amp Box S is an ultra-compact power amplifier, which is both efficient and audiophile. Boasting an impressive 30 Watt output, this small but perfectly formed box will boost any small hi-fi system.

A ultra-high-efficiency, Bi-Phase PWM (Pulse Wave Modulation) circuit with SMD parts gives outstanding audio performance and stays cool on the outside when in use. The sound quality from the Amp Box S is aimed to be as close as possible to Class A tube amplifiers, with their liquid and life-like presentation.

The Amp Box S is micro-sized, allowing for easy placement in any environment. It can also be remotely switched off via a trigger signal (a 45cm power-on cable is supplied for this purpose) for convenient operation. When bi- or tri-amping, this remote power signal can also be relayed to multiple units.

Product Description

Key Features:

  • Bi-Phase PWM(Pulse Wave Modulation) circuit
  • Discrete design for ultra-dynamic playback and highest resolution
  • SMD for short signal paths
  • 2 x 35W @ 4ohms / 2 x 25W @ 8ohms
  • Ultra high-efficiency: approximately 80% of power consumption goes to “power out”
  • Gold-plated, over-sized binding posts
  • Trigger-switching with Loop-out
  • Metal case shields the electronics from vibrational and electromagnetic interference
  • Outboard power supply included

Technical Data:

Power Output: 2 x 25W at 8Ω (Both Channels Driven)
2 x 35W at 4Ω (Both Channels Driven)
Frequency Response: 5Hz – 20kHz (+ 0dB, – 0.5dB)
Channel Separation: >40dB At 20kHz
Noise Floor: > -100dB (A Weighted)
THD: < 0.05% At 10W
Gain: 22dB
Input: 1 Pair RCA/Phono Sockets
Input Sensitivity: 1V
Input Impedance: 47kΩ
Speaker Connectors: Gold-Plated Terminals For…
4mm Ø Banana Plugs, Spades Or Naked Wire
Trigger: 12V DC Switching Voltage
Trigger In/Out: 2-Pole 2.5mm Ø Co-Axial Jack
Outboard PSU: 20V/3A DC (Peak 7A DC)
Standby Power: < 1W
Dimensions (W x H x D): 103 x 36 x 104mm
Weight: 670g (Without PSU)

Additional Information

Black, Silver