Counterpoint SA-4 monoblock power amplifier Specifications

Sidebar: Specifications

Description: Output-transformerless (OTL) tubed monoblock power amplifier. Feedback: overall, voltage loop; local, degenerative cathode. Power output: 190W into 16 ohms (25.8dBW), 140W into 8 ohms (21.5dBW), 80W into 4 ohms (16dBW). Frequency range: 0.8Hz–100kHz. S/N ratio: 92dB. Harmonic and IM distortion, 100 watts out into 8 ohms: typically 0.220.75%. Input impedance: 100k ohms. Signal polarity: non-inverting. Power consumption: 200 watts, idle; 700 watts, maximum.
Dimensions: 19" W by 6.75" H by 19" D. Weight: 120 lb/pair.
Price: $5225/pair (1986); no longer available (2018). Warranty: Three-year transferable (except tubes, 30 days).
Manufacturer: Counterpoint Electronic Systems, La Jolla, CA 92037-0625 (1986); company no longer in existence (2018).

Counterpoint Electronic Systems
Company no longer in existence (2018)

Bogolu Haranath's picture

Atma-Sphere still makes OTL vacuum-tube amps these days ............ Any Stereophile reviewers are willing to review one of those Atma-Sphere amps? :-) .......... May be their Novacron mono-bocks?:-) ..........

volvic's picture

Fond memories of listening to these components in the 80's. Who can forget their great DAC from the mid 90's DA-10? Good times sadly gone.

Bogolu Haranath's picture

True .......... Some of the Stereophile reviewers were young and energetic in the 80's ............. Now they are old and worn out :-) ...........

Roger A Modjeski's picture

Hey, Thanks for running this review on my very first power amp design. I almost merged Music Reference with Counterpoint, but glad I didn't, for I am still here and they are not!