RADAR is a price search engine. We link to the original listing — we never sell direct. Transactions happen on the source site.
Bryston 4B NPB Power Amplifier Bryston 4B NPB in used condition, good for its age. This unit built like a tank with serious power output. The superseded model 4B3 cost $11,000. Output Power: 250W continuous into 8 ohms (24dBW) 400Wpc rms continuous into 4 ohms (23dBW) 800W continuous into 8 ohms in bridged mode (29dBW) Current Delivery: 16A continuous, 48A peak, per channel Frequency Response: 1Hz–100kHz, ±3dB for 1W output Signal-to-Noise Ratio (SNR): Hum and noise: 108dB below rated output 90dB IHF App 20kg Condition: Used Payment Method: Paypal as friend, EFT Region/State: (QLD) Queensl
New these Brystons were very expensive, but at A$2,200 this one looks a bit ambitious unless it’s exceptionally clean with fresh service history. For a 4B NPB, I’d treat A$1,500–A$1,900 as the more typical used band in today’s market, with top-end examples only pushing higher if provenance is strong. In that context, A$2,200 is not crazy, but it’s firmly in “paying for condition” territory rather than a bargain.
Before buying, verify there’s no transformer hum, channel imbalance, relay/bias oddities, or DC offset issues at turn-on. Also confirm the exact revision, whether it’s been serviced, and what’s included: original packaging, manual, rack ears or handles if applicable, and any transferable warranty. With an amp this old and this heavy, proof of careful transport matters almost as much as sonic condition.
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.
StereoNET
audio-markt.de
Good
eBay US
eBay US
audio-markt.de
New
DE
audio-markt.de
Good
