Project Stereo Box RS


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The Stereo Box RS is Project Box Design's flagship integrated amplifier, and utilises a valve pre-amp stage with Class D amplification. One of the main things that sets this compact amp unit aside from its competitor models, is the design philosophy Project have used in an effort to provide truly pure analogue circuitry. This, alongside the 6 strictly analogue inputs and a dual mono construction, make it one of the better amplifiers out there today. When acknowledging the tiny size of this beastly unit, the Stereo Box RS is a sonically superior product that offers a clean and rich sound, far exceeding its small stature. 

There are 6 stereo line inputs featured on the unit, these include 5 pairs of RCA phono inputs and one balanced XLR pair. The Stereo Box RS can also be used as a pre-amplifier, and includes an additional subwoofer output option should one be required. 

The circuitry within the unit is purely analogue, complete with low-noise buffer input stages to offer an uncompromised sound that pleases even the most demanding of audiophiles.


Power Output  2 x 80W (8 ohm)
2 x 120W (4 ohm) 
Signal to Noise Ratio  >-95dB (IEC-D) 
Total Harmonic Distortion  0.05% / 100 Watts 
Gain  32dB (RCA)
35dB (XLR) 
Frequency Response  20Hz - 20kHz (-0.1dB, +0.2dB) 
Stereo Line Inputs  5 x Pairs of RCA Phono connections
1 x pair of balanced XLR connection 
Output Impedance  0.022 Ohm 
Subwoofer Out  1 x RCA mono 
Record Output  Stereo RCA (Fixed Level) 
Speaker Connectors 4mm Banana plugs
Spades connectors
Bare wire 
Power Supply  48V/2.5DC; 100-240V 
Dimensions in mm (Width x Height x Depth) 206 x 720 x 220
Weight 2.6kg

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Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25