Tube Power Amp Reviews

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).

COMPANY INFO
Counterpoint Electronic Systems
Company no longer in existence (2018)
ARTICLE CONTENTS

COMMENTS
Bogolu Haranath's picture
Submitted by Bogolu Haranath on November 15, 2018 - 10:47am

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
Submitted by volvic on November 15, 2018 - 10:53am

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
Submitted by Bogolu Haranath on November 15, 2018 - 11:31am

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
Submitted by Roger A Modjeski on November 23, 2018 - 7:29pm

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!

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