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Bryston 28B Cubed Mono Amplifier
Besides the fact that this is one of the most powerful amplifiers on the market and can drive virtually any loudspeaker with total grace and ease, the 28B³ monoblock amplifiers are some of the finest sounding models ever at any power output. These amplifiers take complete control over your loudspeakers and command them to be their best. Bryston first-to-last-watt philosophy demands that each of our products sounds equally amazing at all power output levels. There is no product we have ever engineered that demonstrates this philosophy better than the 28B³. Even if you don't need all the power these amps offer, you owe yourself the pleasure of a demonstration. Hear the 28B³ today.
Features
- Balanced XLR and Single ended RCA input
- Dual binding post pairs
- Thunderous 1000W into 8 ohms (and up to 1800 into 4 ohms)
- The patented Salomie circuit found in all Cubed Series amplifiers
- 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)
Dealers selling Bryston near you
Bryston 28B Cubed Mono Amplifier — Authority and finesse
The Bryston 28B Cubed monoblock pairs reference-level muscle with refined musicality, delivering massive headroom and control. With 1000W per channel (8Ω) and 1800W into 4Ω, it supplies effortless dynamics and transient speed that transform both small monitors and demanding speaker loads.
Reviewers including TONEAudio and Audiophilepure highlight its neutral, low-fatigue tonal balance—sweet mids, well-articulated bass and precise imaging—plus a colossal power supply that maintains control at any level.
Handmade Canadian construction, heavy-duty machine work and pro-grade reliability give it long-term appeal, while recommended dedicated AC circuits and robust chassis suit high-performance systems. For listeners wanting uncompromised authority and clarity, the 28B Cubed is a compelling, high-value monoblock.
Pros
- Colossal power reserves and headroom deliver authoritative dynamics and effortless control, driving difficult and low-impedance loads without strain.
- Neutral, low-fatigue tonal balance with clear midrange, well-articulated bass and precise imaging for detailed, natural reproduction.
- Robust build quality and reliability—handmade Canadian construction, excellent machine work and pro-audio-grade design backed by strong support.
- Strong value within its high-end category: performance and warranty/support combine to justify the monoblock investment.
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Cons
- Very heavy and bulky (roughly 90–93 lbs), making placement and installation more demanding.
- High AC current demand—reviewers recommend dedicated 15A–20A circuits as standard household wiring can trip under extreme use.
- Not ideal for listeners seeking an overtly warm or tube-like coloration; the presentation leans neutral and highly resolved.
Sound Quality
95/100
Dynamics
96/100
Reviewers repeatedly praise the enormous power reserves, headroom and control ("colossal power supply", "plenty of power on reserve") and note the amp drives difficult loads without strain (used on MartinLogan speakers with extreme impedance dips). With 1000W into 8Ω / 1800W into 4Ω and a monoblock design, the amp shows authoritative slam, effortless transient response and excellent speaker control — consistent with reference-class dynamics for its power class.
Soundstage Imaging
94/100
Reviewers note strong spatial retrieval and micro-detail ("ability to breathe", hearing fingers slide across a guitar fretboard) with stable imaging even under heavy demands. The amp preserves and conveys scale and textural cues, helping instruments and voices sit clearly in depth and width without collapse when delivering high power.
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Build Quality
95/100
Handmade Canadian construction, substantial machine work and heavy-duty chassis are repeatedly cited ("fantastic job...machine work", "they weigh 90 lbs.") and the monoblock format yields a very robust power supply and mechanical design. Reviewers also highlight pro-audio grade construction, strong warranty/support and the impression of premium component and transformer sizing, all indicating top-tier build quality.
Value for Money
93/100
Reviews explicitly call this an "Exceptional Value" for its performance and build, noting that while not cheap the amplifiers represent strong value relative to much pricier competitors (award citations and phrases like "if that doesn't say exceptional value, I don't know what does"). Given the performance, warranty/support and monoblock capability in the $11.9k–$13.8k range per unit (review and product data), reviewers judge the price justified within its segment.
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