The SR4 Power Supply
The SR4 power supply has been designed in response to customer requests for a high quality power supply for powering a range of digital audio interface equipment, and analogue equipment, with a single supply rail requirement. There are many products available in the market with different voltage requirements so it makes sense to provide an easily adjustable power supply to cover a number of voltage options, thus making the power supply more universal in application, when customers change their equipment.
The SR4 output voltage is externally switch-able via a switch on the back panel. The SR4-12 has switch positions for 5v, 7v, 9v and 12v. The SR4-19 has switch positions for 9v, 12v, 15v and 19v.
The available output current is 2A continuous and 20A transient.
The SR4-05 is a fixed voltage 5v output version with a 4A continuous 20A transient current rating.
The SR4 uses the same ultra low noise high performance discrete component voltage regulator as the highly regarded SR5 and SR7 power supplies. The SR4 mains transformer is configured as a balanced mains isolation transformer to provide exceptional mains born common mode interference rejection like the SR5 and SR7 power supplies.
Currently we do not provide a mains lead for the SR4. There is an IEC mains inlet on the back panel of the power supply and this allows the use of higher quality mains leads specifically designed for audio use. You can use a standard generic mains lead if the budget is restricted and the SR4 will give very good performance with this type of lead, but use of a high quality mains lead will give worthwhile sonic improvements.
The output DC connector is a 4 pin gold plated Neutrik XLR and there are two metallurgy options for high performance DC leads, annealed copper or annealed fine silver. DC lead prices are for 0.2 metre, 0.5 metre and 1 metre. Other lead lengths can be supplied so ask for a quote if you require a different length.
SR4 dimensions – W = 110mm, H = 50mm, D = 230mm
The SR4S-05 in the silver anodised extrusion currently costs £330.
The SR4B-05 in the black anodised extrusion currently costs £342.
The SR4S-12 in the silver anodised extrusion currently costs £330.
The SR4B-12 in the black anodised extrusion currently costs £342.
The SR4S-19 in the silver anodised extrusion currently costs £350.
The SR4B-19 in the black anodised extrusion currently costs £362.
0.2 metre DC3CXLR annealed Copper with Teflon insulation costs £31.
0.5 metre DC3CXLR annealed Copper with Teflon insulation costs £43.
1 metre DC3CXLR annealed Copper with Teflon insulation costs £55.
0.2 metre DC3FSXLR annealed Fine Silver with Teflon insulation costs £44.
0.5 metre DC3FSXLR annealed Fine Silver with Teflon insulation costs £65.
1 metre DC3FSXLR annealed Fine Silver with Teflon insulation costs £90
How to order
We produce units in monthly batches, when you enquire about your order you are given what monthly batch your order would be part of. You have the option of a PayPal invoice or a direct bank transfer. If you decide on a direct bank transfer you must provide a postal address for the product to be sent to. Both payment options will incur additional charges. Currently PayPal charges between 2.9% and 5.5%, with Bank Charges ranging from £6 to £15.
If you decide to purchase a DC lead with your power supply please add in your order what size you need the connector to be, we offer 2.1mm, 2.5mm or a micro USB adapter, all of these options do not incur any further charge.
Shipping costs for the SR4 power supply including insurance for loss or damage in transit :-
Rest of the world £28
There is also the option to have your order shipped with FedEx which may speed up the delivery process, this will however come with extra costs which can be quoted to you upon enquiry.
After you have decided what unit you wish to purchase, how many and whether you would like a DC lead or not, please use the form below.