Reference A-150 Power Amplifier

The Reference A-150 is an amplifier capable of the highest level of excellence, encompassing all the very best Plinius has to offer from componentry to aesthetic.

The Reference A-150 is an evolution of the SA series amplifiers that have been so popular among serious lovers of high end audio for the past thirty years. The changes made to the components, particularly the power supply in this model keep its design as fresh as its new aesthetic.

This evolutionary process has resulted in an amplification system capable of the highest level of excellence without breaking the bank.

The Reference A-150 is capable of delivering over 150W in stereo and over 450W in mono via RCA or XLR inputs. Couple these features with the Plinius signature aesthetic and you have a true force of nature.

Responsiveness and control are married together with pureness and clarity to faithfully support your speakers as they replicate the artists efforts in stunning detail for your listening pleasure.

A-150 Power Amplifier Front look
A-150 Power Amplifier Main body
A-150 Power Amplifier Rear look


150W Continuous Average per Channel into 8 ohms. 250W Continuous Average per Channel into 4 ohms


450W Continuous Average into 8 ohms. 600W Continuous Average into 4 ohms.


20Hz to 20kHz ±0.5dB -3dB at 70kHz


<0.03% THD at rated output power


50A short duration peak per channel Fuse protected


100dB below rated output. 20Hz to 20Hz A weighted


47k ohms


RCA Inputs: 32dB. XLR Inputs: 38dB


485W Class A Idle. 92W Class AB Idle/Standby


Height: 220mm (8.75")
Width: 510mm (20")
Depth: 455mm (18")
Weight: 38kg (83lbs)

Sound Stage Ultra Review

'The Reference A-150 sounds so good that, 25 years from now, it may have proven to be one of those amps that someone is still proud to own and still enjoys listening to. This is the type of sound that never goes out of style -- the type of sound that stands by you on your audiophile journey, no matter how long that journey is.'

Read the full review by Jeff Fritz -