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Peak HiFi is a well established business and was formed in 2004 as audio consultants specialising in high quality audio equipment, with a particular fondness for stereo and analogue equipment, we are particularly enthusiastic for classic turntables such as the Garrard 301 and the Garrard 401. Peak HiFi offers a select range of new and approved used equipment, accessories and services. Reconditioned Garrard 301 and 401 units are available as well as beautifully engineered plinths for these decks. We welcome you to visit us at our premises in the Peak District and to take advantage of our relaxed surroundings and two demonstration rooms where we can demonstrate all of the equipment and assist you with your selection. Please call us to fix an appointment.

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Home > Products > Amplifiers > Pro-Ject Audio > Amp Box S

Amp Box S

Amp Box S
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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.

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)

Product Code: Amp Box S

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Amp Box S

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