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Cubed Series 28B³ Monoblock Amplifier

Cubed Series 28B³ Monoblock Amplifier

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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.


- Balanced XLR & Single ended RCA Input

- Dual binding post pairs

- Thunderous 1000 watt 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 20 Year Warranty

Color Options

- Silver or Black faceplate

- 17” or 19” faceplate ( non-rack mountable )

Bryston Cubed Series 28B Monoblock Amplifier User's Manual




17"or 19"  ( W ) x 8.1" H x 16.8" or 18.4" ( D ) with front handles 


93 lbs 

Frequency Response:

<1hz - 100khz: -3 db

THD 20Hz-20kHz:


Power Output:

1000 Watt @ 8Ω | 1800 Watt @ 4Ω


RCA: -116 dB , XLR: -117 dB

Input Impedance:

Unbalanced 15kΩ