7B³ – Bryston

7B Cubed Mono Amplifier

7B³ mono amplifiers are truly special. Though they don't look much different, they're a big step up from the venerable 4B³. The power supply for this amplifier is built around a specially wound transformer that is substantially more efficient than normal. With twice the power available, they can drive all but the most brutal loads to lifelike levels. But even at whisper quiet levels, they reveal detail and nuance in your recordings that you never knew existed until now.

Features

Balanced XLR and Single ended RCA input
Dual binding post pairs
600W into 8 ohms (and up to 900 into 4 ohms)
The patented Salomie circuit found in all Cubed Series amplifiers
Switchable gain (23dB or 29dB)
Fully convection cooled means no noisy fans
Machined and anodized aluminum enclosure and dress panel
Less than 500mW standby power consumption
SoftStart microprocessor controlled startup sequence won't trip circuit breakers
DC trigger for automated turn on and turn off
Legendary Bryston 20 Year Warranty

Options

Silver or black faceplate
17” or 19” faceplate (non-rack mountable) 19" comes with front mounted handles

Specifications
Dimensions	Inches: 17 or 19 W x 5.8 H x 15.5 or 17.8 (with front handles) D
Weight	53 lbs \| 24 kg
Frequency Response:	<1Hz - 100kHz: -3dB
THD+N (20Hz-20kHz @ 600W, 8Ω):	<0.005%
Power Output:	600W @ 8Ω \| 900W @ 4Ω
Noise:	RCA: -117dB
	XLR: -119dB
Input Impedance:	Unbalanced 7.5kΩ
	Balanced 5kΩ / leg

The sort of musicality I hear in the Brystons is more along the lines of a winning, agile tunefulness than a beguiling, silky lusciousness. I kept listening to cut after cut not necessarily because every nuance was brought forth, but because the Brystons seemed to convey a feeling of unfettered directness and immediacy. I remained engaged with the music during long listening sessions, my feet tapping to the beat and my head leaning with the phrases, because the Brystons’ readily transmitted the central “musical core”—if you will.

Kirk Midtskog

The Absolute Sound

Overall, the 7B-3s are probably as delightful-sounding as any amps I've auditioned. They are completely without a familiar sonic signature, yet immensely melodious and transparent, and absolutely effortless in reproducing the kind of dynamic range one may get at live performances of large orchestral music.

Ernie Fisher

The Inner Ear

If you're looking for fairly universal amplifiers that can drive even the most difficult speakers strongly but also with extreme sensitivity when prompted by the music, do not miss the opportunity of listening to these machines; do not be deceived by the relatively affordable cost. They are worth much more than required, when compared to the competition.

Angelo Jasparro

Audio Activity

The Bryston BP-173 Preamplifier and the Bryston 7B3 Mono Amplifiers is an amazing setup, and should be on any serious short list. The entire Bryston Cubed Series component line should be evaluated, as well. Excellent products with outstanding support. Highly, highly recommended.

Dwayne Carter

Enjoy The Music

Up to now I have never heard this kind of quality from any other amplifier.

Jörg Dames

Fair Audio

Brochure

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Manual

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Made In Canada

20 Year Warranty on Analog and Loudspeakers