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Plinius SA Reference Power Amplifier

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In 1992, PLINIUS released the SA-250 Class A Amplifier. This amplifier was to become our reference standard, and one to which we compared all of our other products. With the development of the PLINIUS Odeon, SB-300 and SA-201 it became apparent that the SA-250 had been eclipsed as our reference product. We therefore set about correcting the imbalance. While we continue to champion our asymmetric approach to circuit design we have refined the operation of our output stage with by far the largest improvement being in the high frequency performance. Along with other refinements we have managed to improve on the SA-250, and exceed the new standard set by our other products. We are proud to announce that a new Reference has been created. Designed specifically to work as either a balanced monoblock, or a stereo amplifier. As a balanced monoblock the SA-Reference will exceed 1kW of pure balanced amplification. Premium components have been used throughout and Class A operation is maintained to over 100 Watts per Channel while 300 Watts is available in stereo mode to direct and control the most demanding speaker systems. The amplifier embodies all that we have learned in the past few years and while modelled on the Classic SA look it has been given some aesthetic changes to bring it into line with our present styling. Sonically paints a seamless picture from the most tuneful and accurate bass to a sweet, extended and extremely believable top end. All Amplifiers are hand built and as each is individually engraved on the front panel, we are able to offer some customer selection of the serial number. Some numbers between 101 and 200 are still available. We will endeavour to have your specific choice engraved if that number is still available.

Power:     300 watts RMS per channel into 8 Ohms, 450 watts RMS per channel into 4 Ohms. 1000 Watts per channel into 8 Ohms in bridged and true balanced mono modes. Both channels driven from 20Hz to 20kHz.
Frequency Response:     20Hz to 20kHz ± 0.2dB. 0dB at 0Hz and -3dB at 70kHz
Distortion:     Typically  0.05% THD at rated power. 0.1% THD and IM worst case prior to clipping
Current Output:     100A short duration peak per channel. Fuse protected
Rise Time:     Typically  4µS.
Hum & Noise:     100dB below rated output 20Hz to 20kHz A-weighted
Input Impedance:     47k Ohms
Gain on RCA Inputs:     32dB
Gain on Balanced Inputs:     38dB
Dimensions:     Height 275mm (10.75"), Width 510mm (20"), Depth 535mm (21"), Weight 57kg (125lb)

Providing your item is in stock, the order is usually dispatched within 24 hours. Postage and packing is completely free for orders over £100*. 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.


Orders are sent via our couriers' DPD on a next-day-delivery service and usually, take between 1 and 3 days. 


Please use this link to find more detailed delivery information.


*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.