Introduction

9BSST FIVE CHANNEL POWER AMPLIFIER

Thank you for choosing the 9BSST Five Channel 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

The 9BSST is a modular design 5 x 120 Watts per channel audio power amplifier. Each channel selects a balanced or single ended input. Each channel selects a gain of 29dB(1v), 23dB(2v) or 17dB(4v). Each channel input may be oper- ated inverted or non-inverted operation (0 or -180 degrees). The power up of the 9BSST may be controlled by a remote control voltage. The 9BSST includes ‘soft start’ power control circuitry to eliminate high inrush currents when A/C power is applied.

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. The 9BSST is a convection-cooled amplifier. 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 installation conditions be constricted, then additional forced air-cooling may be necessary. Bryston can provide an optional fan package if required. Any 9BSST channels thermally shutting down during operation indicates insufficient cooling, and a remedy must be found for cooling the amplifier. Provide a minimum 6” space to the rear of the 9BSST for ventilation and dressing cables to and from the amplifier.

Never operate the 9BSST in a vertical position.

Wiring the 9BSST ( 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 gauge wire. The speaker binding posts will accept wire up to 3 gauge in size. Bryston can custom build cables for your applica- tion.

A/C power

Before plugging in the power cord be sure your 9BSST is specified for the correct A/C voltage for your locality. The voltage is listed to the right of the power input connector. The circuit feeding the 9BSST should be sufficient so as not to cause the circuit breaker to trip. Note: the 9BSST when operated with all channels at maximum power into 4 ohm loads, can 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 or remove the ground pin from the plug.

Power line conditioners will not improve the 9BSST performance, in fact most of the time they restrict the flow of cur- rent in the power line to the amplifier, reducing performance at high output levels.

9BSST specifications

The Bryston 9BSST is a revered powerhouse in the realm of high-end audio amplification, offering audiophiles an unmatched listening experience through its impressive technical specifications and robust build quality. Esteemed for its pure, accurate sound reproduction, the 9BSST serves as a benchmark for solid-state amplifiers.

One of the standout features of the Bryston 9BSST is its power output, delivering 300 watts per channel into 8 ohms and 500 watts into 4 ohms, making it versatile enough to drive a wide array of loudspeakers. This substantial power ensures that even the most demanding speakers are adequately supported, capable of producing deep, thunderous bass alongside pristine high frequencies.

The amplifier is constructed with Bryston's legendary attention to detail and durability. Its all-steel chassis not only provides a rigid structure but also helps in minimizing electromagnetic interference, contributing to the overall audio purity. The 9BSST is also known for its warm, transparent sound signature, which can be attributed to its well-engineered Class AB topology. This design strikes an excellent balance between delivering high power and maintaining low distortion levels.

Moreover, the 9BSST incorporates advanced thermal management systems, including large heat sinks and robust cooling fans, ensuring reliable performance during extended listening sessions. This prevents overheating, which can adversely affect performance and longevity. In terms of connectivity, the amplifier comes equipped with balanced XLR and unbalanced RCA inputs, providing flexibility in system integration.

Bryston amplifiers are also recognized for their longevity, a feature reinforced by their impressive 20-year warranty. This commitment to quality is indicative of the brand’s confidence in their products. In addition, the 9BSST includes Bryston's unique "low-frequency cutoff" feature, which protects speakers from potential damage caused by high power surges at lower frequencies.

Overall, the Bryston 9BSST encapsulates the perfect synergy of power, precision, and reliability. Its robust engineering and exceptional sound quality make it a favorite among audiophiles and music professionals alike, solidifying its status as a top-tier choice in the high-end amplifier market. With its rich history and dedication to performance, Bryston continues to set the standard for high fidelity audio.