Bryston 28B SST User Manual

BRYSTON 28B SST

1000 WATT MONO A MPL IFIER

BEYOND EXPECTATIONS

IntroducIng the 28B SST MONO AMPLIFIER

OuR MISSION

To design a state of the art 1000 watt power amplifier that

does not compromise performance at 1/10th power.

A significant part of the design criteria for the 28B SST

was to develop a ver y powerful amplifier that would

drive any speaker on the planet but maintain an ideal

power curve at 1 watt as well as at 1000 watts and every

power level in between. Most amplifiers exhibit a power

cur ve whereby the best noise floor, drive capability and

distortion is maintained from about 1/3 power and up.

The Bryston 28B-SST Mono amplifier maintains its

power curve right from the first watt. This results in a

BIG POWERF UL amplifier that sounds incredibly

detailed and musical at very low levels and maintains that

same sophistication and drive capability with even the

most difficult, inefficient speakers, large or small.

directly into your listening environment. The 28B’s ability to

resolve subtle musical details has to be heard to be believed

– it truly sets a new standard : Mission accomplished.

FEATuRES

• Selectable input – balanced (xlr) or single ended (rca)

• Selectable gain - 1v = 29db or 2v = 23dB

• External power on off control - 12v trigger

• New micro controlled soft start

• New power switch

• All A/C is totally shielded from Audio circuits

• Maintains exceptionally low noise and distortion

from very low to very high power demands

HEAT SINkS

The Bryston 28B-SST employs a total new computer modeled

heat sink design maximizing heat dissipation for long-term

“fan-free” operation into the most demanding speaker loads.

The Bryston 28B-SST is a fully balanced output amplifier

(BRIDGED), which has reduced THD and IMD to

unprecedented low values, (typically 0.001% or less), for a

new degree of transparency, musicality and ease of listening.

Superbly low noise floor, typically below – 115dB, yields

an inky black silence between notes for hauntingly realistic

reproduction. Tremendous power reserves give the 28B-

SST virtually perfect f reedom from overload on any type

of speaker or music, bringing the performance and realism

2000 VA Power Supply Heatsink Design Maximizing

POWER SuPPLY

The Bryston 28B-SST is a single channel mono block

power amplifier capable of delivering over 1000+ watts of

power. To provide this power the 28B POWER SUPPLY

utilizes a 2000 VA custom power transformer, with

120,000 uf of filter capacitance, supply rails of +/- 90v.

The component layout has been optimized so power path

lengths are very short, and all wire has been eliminated

after the power transformer.

Heat Dissipation For Long-Term

“Fan-Free” Operation

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