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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 10 Year Warranty
Options
- Silver or black faceplate
- 17” or 19” faceplate (non-rack mountable) 19" comes with front mounted handles
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Bryston 7B Cubed Mono Amplifier
Built to drive demanding loudspeakers with both authority and finesse, the Bryston 7B Cubed is a fully balanced Class AB monoblock that pairs raw muscle with refined transparency. With 600W @ 8Ω (900W @ 4Ω) and very low measured noise, reviewers such as TAS Staff highlight its deep, stable bass, excellent dynamics and a notably wide, tall soundstage; Alpha Audio also evaluated its performance in detail. Sonically it delivers taut bass, transparent mids and clean treble with exceptional imaging. The hefty, single-channel chassis and improved input stage underline robust build quality and reliability. Ideal for audiophiles with large, high-sensitivity speakers or for systems that need substantial headroom, the 7B Cubed offers high-end power and control that justify consideration at its price point.
Pros
- High continuous power and current delivery (600W/8Ω, 900W/4Ω) gives outstanding headroom and control for demanding speakers.
- Refined, low-noise presentation thanks to input-stage improvements, yielding transparency and musical ease.
- Exceptional spatial performance — impressive width and height with stable depth and imaging under complex passages.
Sound Quality
94/100
Dynamics
94/100
As a fully balanced Class AB monoblock delivering 600W into 8 ohms (900W into 4 ohms) the 7B³ is described as having excellent bass extension, stability and an 'admirable sense of ease' during demanding passages. Reviewers highlight its authority and low noise, and the monoblock topology (+1–2) combined with the ability to deliver high current into 4 ohm loads supports strong headroom and control. Overall the evidence supports top-tier dynamic performance for its power class.
Soundstage Imaging
93/100
TAS reports that soundstage depth is on par with other solid-state amps at this level, while width and height are 'exceptional.' That explicit praise for scale and spatial presentation indicates very strong imaging and stage-building capability, with stable channel separation even under demanding material.
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Build Quality
92/100
The amp is described as a fully balanced, Class AB monoblock in a substantial chassis (heavy, robust construction) with improvements to the input stage over prior generations. Physical spec (heavy weight, large power ratings) and the single-channel-per-chassis design suggest a stout power supply and conservative thermal/mechanical design, consistent with excellent build quality.
Value for Money
87/100
TAS lists the price as $14,990/pr (i.e., $7,495 per mono) but offers no explicit ‘worth it’ or ‘overpriced’ judgment. Given the 600W/8Ω (900W/4Ω) power, balanced topology and the reviewed refinement, the pricing sits where one would expect for high-end monoblocks; reviewers did not call it a bargain or a poor value, so a neutral baseline score is appropriate.
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