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
2
SonIc SuPERIORITy
uNIquE BuRN-IN PROCEDuRE
Each and every Bryston product undergoes a very extensive
“burn-in” procedure. Following a complete operational
checkout, every amplifier is placed on a test-bench and
cycled on and off at one hour intervals for 4 days at full
output. This extremely rigorous burn-in quickly “matures”
components and weeds out any potential premature
failures. The result is reliable trouble-free performance
for many years, and is backed by Bryston’s exclusive 20-
year full warranty.
HAND ASSEMBLED WITH CARE:
Bryston hand assembles and individually tests each and
every product we manufacture. We exclusively use only
the finest components in our amplifier designs, such as
1% and 0.1% metal-film resistors, polystyrene capacitors
and hand selected and matched transistors to reduce
noise and distortion to the absolute minimum. Bryston
applies techniques and employs custom materials in
our everyday construction of electronic equipment that
are more typically utilized in military and aerospace
industries. Our traditional adherence to proprietary parts
and sophisticated construction and testing techniques
guarantees your amplifier will perform for many years
without concern. It also prevents any unit-to-unit
variability, which inevitably is the result of any mass
produced product.
DESIgN PHILOSOPHY ENSuRE S
SONIC-SuPERIORITY
• All analog signals are delivered by fully discrete
components.
• All critical transistors are closely matched.
• All capacitors are selected for long life.
• All audio connectors are gold plated, to be trouble f ree.
PERFORMANCE WITHOuT COMP ROMISE
With today’s increased clarity and dynamic range in
recordings and movie soundtracks you need equipment
that not only equals, but also surpasses the parameters of
the most demanding material available. The Bryston 28B-
SST Mono Block Amplifier is without peer in meeting this
performance challenge.
THE CONSEquENCE
Obviously the goal of all this technology is to transport you to
the scene of the movie or the location of the musical recording.
Experiencing all the drama, movement and emotions intended
is the one and only true measure of any audio/video system. We
know you will agree the Bryston 28B-SST Mono Amplifier
provides you with an open window on the musical experience.
If your requirements are for sonic excellence in both analog
and digital formats without compromises in performance,
value and reliability look no further than the Bryston
28B-SST Mono Amplifier.
Remote 4-12 Volt
Power Trigger Input
New Push on/off
Power Switch
3
28B SSt TECHNICAL SPECIFICATIONS
DESCRIPTION
The 28B-SST is a powerhouse balanced mono amplifier
providing a minimum of 1000-watts at 8-ohms.
POWER OuTPuT
1000 watts into 8Ω
gAIN (SENSITIvITY) SELECT
1V setting = 29dB of gain = 100 watts @ 8 Ω
3.2V =1000 Watts @ 8Ω
2V setting = 23dB of gain = 100 Watts @ 8Ω
6.4V=1000 Watts @ 8Ω
INPuT IMPEDANCE
Single ended: 30K Ω
Balanced: 60K Ω 30K each leg
DISTORTION IM OR THD+NOI SE
< 0.005% 20Hz to 20kHz at 1000 watts into 8Ω
NOISE
Measured with input shorted - 20Hz to 20 kHz.
>110dB below rated output 29dB gain (- 75dBu)
>113dB below rated output 23dB gain (- 78dBu)
WEIgHT:
Approx. 42 kg - 92 lbs
POWER CONSuMPTION & HEAT LOAD
Power consumption at Idle ≈ 215 Watts
Max. heat dissipation at idle ≈ 733 BTU/Hr.
Power consumption @ 1000W output
into 8 ohms ≈ 1486 Watts
Max. Heat dissipation @ 1000 Watts output
into 8 ohms ≈ 1658 BTU/Hr.
Maximum power output at onset of
clipping into 8Ω ≈ 1300 Watts
Power consumption at 1300 Watts
output into 8Ω ≈ 2640 Watts
Max. heat dissipation @ 1300 Watts
output into 8Ω ≈ 4572 BTU/Hr
Power output under normal operating
conditions (1/8th max. pwr.) ≈ 161 Watts
Current consumption under normal
operating conditions ≈ 9.3 Amps
Max. heat dissipation @ 1300 Watts output
into 8Ω ≈ 955 BTU/Hr
SLEW RAT E
> 120 volts per microsecond
POWER BANDWIDTH
< 1 Hz to over 100 kHz
DAMPINg FACTOR
Over 500 at 20 Hz, ref. 8 ohms
DIMENSIONS:
Maximum dimensions for 19”w version with handles
48.3 x 20.5 x 52.1cm (19”w x 8.05”h x 20.525”d)
20 YEAR LIMITED WARRANTY
Bryston Ltd. P.O. Box 2170, 677 Neal Drive, Peterborough,
Ontario Canada K9J 7Y4 1-800-632-8217 bryston.ca
MODELS AvAILABLE:
C-Series - Black or Silver
17 inch without handles or 19 inch with handles
Rackmount Version - Silver or Black 19 inch with handles
Pro Version - 19 inch rackmount Black with handles
Specifications subject to change without notice.
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