Pro-Ject Box Design Amp Box S3 Power Amplifier

The Amp Box S3 boasts a new PCB concept and sophisticated topology in order to achieve less distortion and a better signal to noise ratio. This audio-focused internal design is also highly efficient, with very little wasted energy. It also brings you a rich and musical sound with a touch of analogue warmth, inspired by the sonic traits of more costly valve amplifiers. By squeezing this clever technology into a deceptively small footprint, the amplifier is suited to a variety of applications.

Technical Specifications:

• Power Output: 2 x 23W/40W at 8 ohms/4 ohms (1% THD) 
• Peak Power: 2 x 50W at 4 ohms
• Frequency Response (20Hz - 20kHz): <-0,7dB at 4 ohms
• Channel Separation: >-68dB at 20kHz 
• Signal to Noise Ratio: 87dBV (100dBV - 'A' weighted) at 4ohms
• THD + N: <0,02% at 10W at 4 ohms
• Gain: 31 dB
• Line input sensitivity: 360mV
• Pre In: 1 pair RCA
• Bypass Output: Jack socket 3,5mm stereo
• Input Impedance: 25 kohms
• Speaker Connectors: 4mm ∅ _banana plugs, spades connectors or naked wire
• Trigger: 12V DC switching voltage, 2-pole co-axial ∅ _2,5mm co-axial jack
• Outboard Power Supply: 20V/3A DC, suitable for your country's mains supply 
• Dimensions W x H xD: 103 x 36 x 118 (136) mm
• Weight: 385 g without power supply

We endeavour to despatch same day for orders placed up to 1pm on available stock items (items with stock message "Usually dispatched within 24 hours"). Please remember to check with us first for a physical stock check if next day delivery is important to you. Any items with stock message "Usually dispatched within 72 hours" are items that we do not hold in stock but order in from the importer or manufacturer as soon as a customer order is received. Occasionally these may be delayed beyond 72 hours due to importer/manufacturer stock levels but we will inform you as soon as we can if this is the case.

UK Orders

We despatch the bulk of our UK mainland items on a 24 hour service – Free of Charge.  Non Mainland locations - Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland may take a day or so longer and are not Free of Charge. Smaller items are delivered using Royal Mail 24 or special delivery. Larger items are delivered using a courier service such as DPD or UPS.

International Orders:

Due to the nature of our products and brand restrictions we are only able to send certain items internationally. Smaller items are delivered using Royal Mail Small Packets Airmail with International Tracked and/or Signed depending on value of item and availability of the service. Larger International shipments are sent by insured and tracked services using UPS. If there are any delays due to specific customs regulations, etc, you will be contacted by Hifisound or by the courier with a request for any further information required. Customs duties can apply for shipments to any countries outside of the UK depending on where the product you have bought is made. Customers are responsible for all taxes and duties incurred when the items enter their country.

Collect in Store or Home Install

At the request of the manufacturer some items cannot be supplied by mail order but you can click and buy them and then elect to collect them from our store or arrange a home install (if applicable). Applicable items clearly state that they are Collect in store or home install. Once ordered you will receive a message prompting you to contact us by phone or email to arrange for us to deliver and install or to reserve and collect from our store at your convenience, you will also be advised of the delivery time / stock availability as not all Home install / collect in store items are held in stock.