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For sale is a pair of Bryston 7B ST Monoblock Power Amplifier for sale in excellent, fully working condition. Manufactured in Canada in the late 90s, these power amps offer a whopping 500 watts into 8 ohms and 800 watts into 4 ohms (although actually benchmarking shows these are conservative figures) with help of the dual toroidal transformers and class AB amplification. These amps are being sold as a pair and feature the same serial number as well as rack handles. Boxes/manuals not included. Both amps have been fully tested and left to original spec. Amps will be shipped in separate packages. Please review all images and descriptions.Condition: No functional issuesNo noticeable cosmetic blemishes, scratching, or defectsAll original components, hardware, and electronicsService:Unit was cleaned/detailed.Tested in complete system with different speaker loads, and both RCA/Balanced outputs. All passed inspection.No service was required after inspection and testing.All original hardware and features have been inspected, tested, and verified by HiFi Haus in Madison, WI as described.Specifications:Solid-state monoblock power amplifier. Class of operation: AB2. Balanced and unbalanced inputs. Rated power output: 500W continuous sinewave power into 8 ohms (27dBW), 800W continuous sinewave power into 4 ohms (26dBW). Distortion: less than 0.01%, 20Hz-20kHz at 500W, IM or THD. Rated slew rate: greater than 60V/µs, parallel mode, 120V/µs, series mode. Sensitivity: 1V for full output. Rated input impedance: 10k ohms. Rated full-power bandwidth: 1Hz-100kHz. Damping factor: over 300 at 20Hz, ref. 8 ohms.Note from HiFi Haus:Have any questions? Please reach out to us directly. Offers are considered. Brick and mortar shop located in Madison, WI . All items are tested, and cleaned, before listing and will be adequately packed to ensure a safe delivery. All items will be insured and we can require a signature on delivery if requested. Items may be returned within 7 days upon delivery. Full refunds are processed once delivered by the carrier and inspected by our technicians. Please reach out directly for delivery outside of the Continental U.S. Thank you for looking!
Timing matters here because the 7B ST is an older generation Bryston, so the real question is condition and whether you specifically want the classic build rather than chasing the newest platform. Against your own market anchor, US$3,999 sits above the 75th percentile of US$3,737, so this reads as ambitious, not a bargain.
That said, these are respected monoblocks for a reason: real current delivery, robust reliability reputation, and a very controlled, authoritative sound that pairs well with hard-to-drive speakers. If the pair is clean, fully original, and has been serviced properly, the upside is longevity more than novelty; just note that at this price you’d want strong evidence of healthy operation, matched cosmetics, and any included accessories or documentation.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Bryston emerged from Canada's medical electronics sector, where it began producing high-tech blood analyzers in 1962. The pivot to high-performance audio came in 1976, sparked by James Tanner's quest to drive demanding electrostatic speakers. Drawing on medical-grade components, the debut of the 4B amplifier at the Chicago Consumer Electronics Show marked the brand's entry into hi-fi, quickly earning acclaim from critics like Peter Aczel and establishing its Canadian manufacturing legacy.
Renowned for robust amplifiers and preamplifiers, Bryston has expanded into digital components such as DACs and streamers, as well as powered speakers. This evolution reflects a commitment to both analog purity and modern digital demands, serving consumer, professional, and commercial markets—from home listening to stadium sound reinforcement—while maintaining a focus on uncompromised musical accuracy.
Positioned firmly in the high-end audio arena, Bryston commands respect for its no-nonsense engineering, timeless designs, and unparalleled reliability, backed by industry-leading warranties. Music and movie enthusiasts trust it for scientifically verifiable sound quality that endures for decades, cementing its status as a benchmark for discerning buyers seeking longevity without compromise.
See all Bryston listings on RADAR.
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