General Information, 3Bsst & 4Bsst Power Amplifiers

3Bsst & 4Bsst POWER AMPLIFIERS

GENERAL INFORMATION

Introduction

Thank you for choosing an SST SERIES Stereo Power Amplifier.

Bryston welcomes any suggestions you may have, or comments regarding the operation of your amplifier. We consider you, our customer, to be Bryston’s most important resource, and your opinion is very much appreciated.

Description 3B SST

The 3B SST is a dual mono design 2 x 150W per channel audio power amplifier. Each channel selects a balanced or single ended input. Each channel selects a gain of 29dB(1v) or 23dB(2v). The 3B SST includes ‘soft start’ power control circuitry to eliminate high inrush currents when A/C power is applied. The power up or turn-on of the 3B SST may be activated by remote control voltage.

Description 4B SST

The 4B SST is a dual mono design 2 x 300W per channel audio power amplifier. Each channel selects a balanced or single ended input. Each channel selects a gain of 29dB(1v) or 23dB(2v). The 4B SST includes ‘soft start’ power control circuitry to eliminate high inrush currents when A/C power is applied. The power up or turn-on of the 4B SST may be activated by remote control voltage.

Warranty ( see back page for details )

Shipping Box & Packing Material

Please keep the original shipping box and all packing material. This will ensure the amplifier is protected in future transport. In the unlikely event you have a problem and must return it for service you must use the proper packing material. Ship the amplifier only in the original packing material, as the unit is not insurable by carriers otherwise.

Installation ( see rack mounting section if applicable )

Ventilation. The most important installation consideration is ventilation. All SST amplifiers are convection cooled. Unrestricted air-flow across its heat sinks is a must. For this reason do not install anything directly above it. Allow 3.5’ (2u) to 5” (3u) inches of space above and to the sides of this amplifier. Do not install directly above other heat generating equipment. Should your instillation conditions be constricted, then additional forced air-cooling may be necessary. Bryston can provide an optional fan package if required. Any SST channels thermally shutting down during operation indicates insufficient air flow, and a remedy must be found for cooling the amplifier. Provide a minimum 6” space to the rear of the amplifier for ventilation and dressing cables to and from the amplifier.

Never operate the amplifier in a vertical position.

Wiring the SST amplifier ( also see rear panel description )

Speaker wires should be as short as practical. Use quality wire, and if runs are more than 3 meters use at least 12 gage wire. The speaker binding posts will accept wire up to 3 gage in size. Bryston will custom build cables for your applica- tion.

A/C power

Before plugging in the power cord be sure your SST amplifier is specified for the correct a/c voltage for your locality. The voltage is listed on the label found at the upper right of the rear panel. The circuit feeding the 4B SST should be sufficient so as not to cause the circuit breaker to trip (15 amp min). Note: the 4B SST when operated with both channels delivering maximum power into 4 ohm loads, will consume all the available power in a normal household circuit, therefore a dedicated electrical circuit may be necessary with this situation. Never lift the safety ground to the amplifier nor remove the ground pin from the plug.

Power line conditioners will not improve the SST amplifier performance, in fact most of the time they restrict the flow of current to the amplifier, reducing performance at higher output levels

3BSST, 4BSST specifications

The Bryston 4BSST and 3BSST are exceptional power amplifiers that embody the premium quality and performance standards synonymous with the Bryston brand. Renowned for their robust build and superior audio fidelity, these amplifiers are designed for both audiophiles and professionals who demand excellence in sound reproduction.

The Bryston 4BSST is a higher-powered model capable of delivering 300 watts per channel at 8 ohms and easily transitioning to 500 watts per channel at 4 ohms. This amplifier is perfect for driving larger speakers and creating a more dynamic listening experience. The 3BSST, on the other hand, provides a slightly more reserved output of 150 watts per channel at 8 ohms and 250 watts at 4 ohms, making it an excellent choice for smaller systems without compromising on sonic clarity.

One of the key features of both models is the SST (Special Serial Technology) Mosfet output stage, allowing for rapid response times and low distortion rates. This technology ensures that the audio signal remains clean and clear, even at high volumes. The amplifiers employ an innovative parallel push-pull output design, which not only bolsters dynamic range but also enhances the overall soundstage.

In terms of construction, Bryston amplifiers are built to last. The chassis is made from heavy-gauge steel with a baked enamel finish that not only provides a sleek and professional appearance but also contributes to overall durability. Moreover, the 4BSST and 3BSST feature a unique thermal management system that uses extensive heat sinks to maintain optimal operating temperatures, thus ensuring reliability during prolonged use.

Another significant characteristic of both amplifiers is their low noise floor. This trait is particularly important for high-resolution audio systems, as it allows for more subtle details to come through, providing an immersive listening experience. They also include Bryston’s signature 20-year warranty, reflecting the company’s commitment to quality and customer satisfaction.

For connectivity, both models provide balanced XLR and unbalanced RCA inputs, accommodating a variety of audio sources and setups. Their simple, clean interfaces make them user-friendly while still providing the performance flexibility that seasoned audio enthusiasts seek.

In summary, the Bryston 4BSST and 3BSST amplifiers exemplify the pinnacle of audio engineering, showcasing an unmatched blend of power, clarity, and durability. Whether you are setting up a high-end home theater system or a professional studio, these amplifiers are equipped to deliver exceptional sound quality for years to come.