This amplifier gets you into serious listening without breaking the bank.


3 year warranty

Finance example

£1,880.00 initial 20% deposit then £250.67 per month for 30 months. Other finance terms available. Finance subject to status



The PLINIUS SA-103 stereo amplifier is a Class A amplifier capable of delivering up to 125 watts per channel in both Class A and Class AB mode. Bridged Mono RCA and Balanced Mono XLR circuits used in the SA103 allow Monoblock operation delivering in excess of 400 watts.

This amplifier gets you into serious listening without breaking the bank. The SA103 are often sold as monoblocks and if you want to do that, and you have time to organise it, the factory can ensure they are made consecutively.

Plinius' distinctive heatsink profile has allowed us to maintain the classic look and produce an amplifier capable of operating in Class A without the use of troublesome fans or other methods used for cooling. Its 500mm by 455mm footprint belies the power it produces and these units sit comfortably beside big speakers, understating somewhat their contribution to the speakers' performance.

As with all Plinius amplifiers, premium components have been used throughout. There is the addition of a 12 Volt trigger which will allow integration into a semi automated system.

These units are at the top of the Plinius range, sitting right under the SA Reference amplifier. With responsiveness and control they faithfully support your speakers as they seek to replicate the original artists' efforts for your listening pleasure.

Tech spec

Power Output:

125 watts RMS per channel into 8 ohms
220 watts RMS per channel into 4 ohms
Both channels driven from 20Hz to 20kHz at less than 0.05% total harmonic

Mono Output:

400 watts RMS into 8 ohms
730 watts RMS into 4 ohms
20Hz to 20kHz

Frequency Response:

20Hz to 20kHz ±0.2dB
0dB at 1Hz and -3dB at 70kHz

Hum & Noise:

100dB below rated output 20Hz to 20kHz, A-weighted


RCA Inputs: 32dB
Balanced Inputs: 38dB

Power Consumption:

2.1A (485W) Class A Idle
0.4A (92W) Class AB Idle/Standby

Dimensions (HxWxD):

220mm (8 3/4 ") x 500mm (19 3/4") x 455mm (18")



For more information click here to visit the Plinius website


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