Bryston 28B³ Cubed Mono Power Amplifier
Best high-end mono amplifier for demanding audiophile speaker setups.
Experience a significant leap in audio performance with the Bryston 28B³ Cubed Mono Power Amplifier. This amplifier boasts a specially wound, highly efficient transformer, delivering substantial power to drive even the most demanding speakers to lifelike volumes. It excels at revealing intricate details and nuances in your music, even at low listening levels. Designed for silent operation, it features a fully convection-cooled system, eliminating fan noise. Built with premium quality and backed by Bryston's legendary 20-year warranty, it ensures exceptional audio reproduction and long-term reliability.
$7495.00
Owner Satisfaction
4.8
/ 5
Category Rank
168
/ 1684
#168 in Power Amplifiers
Price vs Category Average
-9%
Below average
Power Output
60089004
/ W into ohms; W into ohms
Who it's for
- Audiophiles driving power-hungry, low-impedance reference loudspeakers
- Investors seeking long-term reliability and peace of mind
- Listeners demanding absolute sonic neutrality and clinical detail
Who should skip it
- Budget-conscious buyers prioritizing value over reference-grade performance
- Users with limited rack space or physical installation constraints
- Owners unwilling to invest in a matching high-end signal chain
Performance breakdown
Power Delivery
Effortlessly drives even the most demanding speaker loads with massive headroom.
Sonic Transparency
Patented Salomie circuitry reveals subtle musical textures with surgical precision.
Build Integrity
Industrial-grade construction backed by an industry-leading twenty-year warranty.
Noise Floor
Convection cooling ensures silent operation without any distracting mechanical fan noise.
System Versatility
Switchable gain settings and dual inputs offer excellent integration for high-end setups.
Low-Volume Fidelity
Maintains exceptional clarity and detail even during late-night, quiet listening sessions.
Key Specs
Power Output
600W into 8 ohms; 900W into 4 ohms
Frequency Response
<1Hz - 100kHz: -3dB
Total Harmonic Distortion (THD+N)
<0.005%
Weight
53 lbs (24 kg)
Dimensions
17 or 19 W x 5.8 H x 15.5 or 17.8 D (inches)
Signal to Noise Ratio (RCA)
-117dB
Input Impedance
Unbalanced 7.5kΩ, Balanced 5kΩ / leg
Standby Power Consumption
Less than 500mW
Features
- Drives demanding loads to lifelike levels
- Reveals fine detail even at low volumes
- Silent operation via convection cooling
- Includes patented Salomie circuit technology
- SoftStart sequence prevents circuit breaker trips
- Switchable gain settings for flexibility
- Offers balanced XLR and RCA inputs
- Legendary 20 Year Warranty included
What customers say
The Bryston 28B³ amplifier is celebrated as an endgame component for its seemingly limitless power reserves. Users consistently praise its ability to control demanding loudspeakers with absolute authority and effortless dynamics. A key theme is sonic neutrality; reviewers describe it as transparent, allowing the source material to shine without adding its own signature. Build quality is universally lauded, reflecting rugged, professional construction. This high end investment is further secured by a long warranty, boosting consumer confidence in its longevity. While expensive, serious audiophiles view the 28B³ as a benchmark for uncompromising, reference-level performance and reliability.
Know before you buy
With 600 watts into 8 ohms and 900 watts into 4 ohms, this amplifier is designed to drive even the most power-hungry, low-impedance speakers. It provides the necessary headroom to maintain control and clarity at both very low and high listening volumes.
No, the 28B³ utilizes a fully convection-cooled system. This ensures completely silent operation, making it ideal for high-end listening rooms where fan noise would be an unwanted distraction.
Yes, the 28B³ features both balanced XLR and unbalanced RCA inputs. This provides flexibility to integrate the amplifier into a wide variety of audio systems.
The amplifier includes a SoftStart sequence specifically designed to manage the power draw during startup. This prevents the unit from tripping standard household circuit breakers when you turn it on.
The patented Salomie circuit is a proprietary design that significantly reduces distortion and noise. It is a key factor in the amplifier's ability to reveal fine musical details and maintain a clean signal path.
Yes, the 28B³ offers switchable gain settings. This allows you to fine-tune the amplifier's sensitivity to better match the output levels of your specific preamplifier.
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$7495