| Bryston SST Series Amplifiers:
Bryston has a continuing commitment to design and manufacture the most accurate and reliable audio products available. We maintain an extensive research and development division, which is constantly looking for methods to improve the performance, value and reliability of our amplifiers. The Bryston SST Series of amplifiers is the direct result of this continuing quest for perfection. These amplifiers represent a significant step forward in the art and science of audio amplification. Among the advances included in this new SST Series are: Faster, more linear and more reliable output transistors for better high frequency accuracy; doubled filter capacitance for even deeper and better-controlled bass; a new proprietary grounding protocol which eliminates the need for ground-lift switches and reduces system noise; new computer-modeled heatsink profile for cooler operation and longer component life. Sound quality is improved to a stunning degree. Reviewers agree, this new product line sets a higher standard for musical accuracy than ever before possible.
Design Philosophy Ensures Sonic Superiority:
All analog signal circuitry is fully discrete to avoid the compromises, phase shift and non-linearity inherent in IC's. The Bryston SST Series amplifiers incorporate the use of an innovative gain stage topology, which yields a substantially lower noise floor through the use of low-impedance pathways within the amplifier. This same approach also has strong advantages in reducing the overall distortion performance. Bryston's computer controlled distortion analyzers confirm Intermodulation Distortion levels less than 10 parts per million (below 0.0009%) are typical for this new circuitry. All SST amplifiers use Bryston's proprietary Quad-Complementary output section, which improves linearity to a new standard of accuracy, while virtually eliminating aggressive higher harmonic distortion products. From input to output, all the circuitry in the SST series of amps has been optimized for the most accurate performance possible. Custom totally independent and separate torodial power supplies for each channel of amplification provides precise and focused soundstaging. The power supplies employ multiple filter capacitors per channel, rather than single pairs of larger filter cans. This allows improved high frequency response and reduces overall losses in the supply. Gold-plated balanced or single-ended (RCA) input connectors are standard as well as gold-plated 5-way loudspeaker binding posts, to eliminate possible causes of distortion from corrosion. A rear panel switch allows for the use of Balanced inputs (XLR or 1/4" phone jack) or unbalanced inputs (RCA). The inputs can be switched to allow different gain settings. From input to output, all the circuitry in the SST has been optimized for the most accurate performance and flexibility possible.
Independent Power Supplies:
Exclusive to Bryston among amplifiers is the use of independent (one per channel) toroidal transformer power supplies providing precise and focused sound-staging. Bryston's research has shown that all amplifiers require separate power supplies per channel for the best imaging, clarity and dynamic range, especially crucial given todays and tomorrows most demanding digital sound sources.
Improvements include:
- Distortion has been reduced to typically .0025% from 20 to 20kHz.
- The noise floor has been significantly improved, reducing background hash to far below audibility.
- Separate power supplies for each channel ensure cross-talk is essentially nonexistent
- Components plug directly into glass-epoxy circuit boards, eliminating variations in signal travel and wire interaction.
- Modular design
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 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 Bryston result of any mass produced product.
Performance Without Compromise:
With today's increased clarity and dynamic range in music and movie soundtracks you need equipment that not only equals but also surpasses the parameters of the most demanding material available. The Bryston SST Amplifiers are without peer in meeting this performance challenge
Serious Amplifiers for Serious Listeners:
The Bryston 4B SST is something of a legend among audio amplifiers. As our most popular it has attained international status as an amplifier suitable for the finest and most sophisticated sound systems. Whatever the venue, be it a recording studio stage, a broadcast facility, a home theater installation, or a state-of-the-art stereo system, Bryston has continued to be the number one choice. The 4B SST is a pure dual mono design and offers 300 watts per channel into 8 ohms and 500 watts into 4 with over 1000 watts available in bridged mode.
BRYSTON SST FEATURES:
- Membrane Power Switch
- Soft start circuit on power up
- Multiple filter capacitance per channel
- Selectable inputs for balanced or single ended (RCA) connectors
- Polarity Switch (0 or 180 degrees) on each channel (6B & 9B only)
- Remote 12 Volt power trigger input with delayed output feature
- Selectable gain settings
- Optional 17" Faceplate (no handles) or 19 inch rack mount (with handles) available.
- Optional Silver or Black Faceplate Available
Unique Burn In Procedure:
Each and every Bryston amplifier undergoes a very extensive "burn-in" procedure. Following a complete operational checkout, every amplifier is placed on a test-bench and run for 100 hours at full output (one hour on/ one hour off for additional thermal stress), with a high frequency square-wave input and a capacitive load. 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. If your requirements are sonic excellence, ultimate reliability, system flexibility and superb value, Bryston power amplifiers will surpass your every performance criterion.
New Standards of Accuracy:
Although the description of circuit innovations can indicate the research and commitment we bring to the design and manufacturing of our products, only in the listening does the result of that dedication become clear. Bryston's SST Series amplifiers are capable of doing justice to even the most refined and sophisticated audio/video systems, with the subtlest details of the recording revealed in their original form.
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 SST Series amplifiers will provide you with an open window on your listening experience.
4B SST PRO Specifications
Power Output: 300 watts per channel into 8 ohms, 500 watts per chanel into 4 ohms
Gain Select and Sesitivity:
- 29dB - 1.8Vin = 300W @ 8 Ohms -(1V Position)
- 23dB - 3.6Vin = 300W @ 8 Ohms -(2V Position)
Input Impedance: 50 Kohms single ended, 20 Kohms balanced
Distortion IM or THD+noise:
- <0.005% from 20Hz to 20kHz at 300 watts into 8W
- <0.007% from 20Hz to 20kHz at 500 watts into 4W
Noise Measured with input shortened - 20Hz to 20kHz
- >110dB below rated output 29dB gain (-75dBu)
- >113dB below rated output 23dB gain (-78dBu)
Slew Rate: >60 volts per microsecond
Power Bandwidth: <1 Hz to over 100 kHz
Damping Factor: Over 500 at 20 Hz, ref. 8 ohms
20 Year Warranty -A Generation of Music
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