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State-of-the-art Analog Stereo Preamplifier
The Bryston BP17 is a state-of-the-art analog stereo preamplifier, utilizing software control which allows Bryston to provide many more features and functions. The BP17 delivers incredible sonic performance while still adhering to traditional, fully discrete, analog circuits throughout the preamplifier. The BP17 offers a dramatic improvement over the BP16 by incorporating much of the existing architecture developed for the Bryston B135 integrated amplifier and SP3 surround sound processor.
"It has low distortion, plenty of output capability even into low impedance loads, and several optional features such as a phono stage and DAC," reports John E. Johnson, Jr. in Secrets of Home Theater and High Fidelity, May 29, 2013. "Solid build and essentially a lifetime warranty round out the BP17, making it an obvious product to consider in setting up, or upgrading your two-channel audio system."
The BP17 employs Bryston's most advanced analog circuitry, power supply design, and isolation techniques, providing audio aficionados with an ultimate performance preamplifier that delivers outstanding sonic performance. Much of the technology in the BP17 required over two years in engineering and development resulting in major advances to the analog circuitry derived from the company's SP-3 processor platform.
Near Zero Noise and Distortion Levels
The BP17 utilizes a software controlled motorized analog volume dial and integrated balance control. This approach enables the preamp to be operated remotely while still adhering to fully discrete analog circuits, delivering perfect channel balance and near zero noise and distortion levels.
"We have reduced Total Harmonic Distortion (THD) levels in the BP17 by utilizing buffer amplifiers optimized for wide open-loop bandwidth and low open-loop THD," notes Bryston CEO Chris Russell. "These carefully selected components essentially eliminate the increase in THD with rise in frequency exhibited by almost all op- amps, giving the BP17 phenomenal detail and complete lack of grain in the sound field."
"The BP17 also features a brand new balanced action volume control, eliminating another source of distortion while maintaining channel-to-channel tracking within 1/10dB over the full range of control," Russell said.
The BP17 includes eight stereo RCA inputs, one stereo RCA output, one stereo tape loop, and a headphone output. The Bryston BR2 remote, made from a machined aluminum block, is available as an option. The programmable pass-through feature allows easy integration with your home theater components.
Bryston applies techniques and employs custom materials in its everyday manufacturing of electronic equipment that are more typically utilized by the military and aerospace industries. Such techniques ensure unit-to-unit consistency that is vastly superior to mass production. Bryston's adherence to the use of proprietary parts, sophisticated construction, and refined testing techniques guarantees superb performance and long-term product reliability.
Bryston's 20-Year Warranty
In a world where most things seem to need frequent upgrading, repair, or replacement, Bryston offers a comprehensive, unconditional, and fully transferable warranty on every audio product its makes. The company's 20-year amplifier warranty and five-year digital circuit warranty drives it in a different direction from the typical manufacturer.
How can Bryston do it? The answer would quickly become apparent if you were to tour Brystons plant in Peterborough, Ontario, Canada. State-of-the-art design facilities, with the latest CAD and circuit simulation software, and an inventory of some of the best and most reliable parts on the planet, combine with a manufacturing philosophy that eschews the artifacts of mass production, like robots, moving assembly lines, and, frankly, shortcuts. Every Bryston audio component is handcrafted by people who take great pride in building the very best.
Rigorous Inspection and Testing
Bryston doesn't skimp on testing or rush its products through some last-minute go no-go check. At every stage individual parts, completed circuit boards, sub-assemblies, and final assemblies are all put through rigorous inspection and testing procedures.
How are components selected and installed in a Bryston product?
Starting with a bare circuit board each component is hand selected and installed, every wire is cut and bent by hand, every connection is hand soldered. Although Bryston could do the job much faster by employing wave-soldering machines typically used in large assembly operations, that would mean exposing the entire board to a molten-metal bath. This is a source of extreme heat shock that could result in long-term reliability problems. Bryston's focus on excellence just doesn't allow for these kinds of short-cuts.
How many hours does it take to build a Bryston product?
The skilled technicians that build Bryston products are not pressured by schedules or quotas. On average, it takes 30-35 person hours to assemble a single Bryston amplifier or preamplifier. The company believes in quality, not quantity.
What kind of product testing does Bryston do?
Frequent inspection and extensive testing are a critically important part of the Bryston assembly process.
Individual components, completed circuit-boards, sub-assemblies and final assemblies are all put through rigorous inspection and testing procedures. Are the soldering joints all clean? Is every component aligned properly? Is the internal wiring laid-out symmetrically and neatly? During every stage of production, quality and performance are checked - and rechecked - against exacting tolerances and specifications.
At the point of final assembly, many manufactures immediately pack their amplifiers into boxes for shipment. However, at Bryston, each of the fully assembled products is connected to what the company calls a "burn-in table." For example, during 100 hours of continuous testing, Bryston amplifiers are monitored through a range of input cycles and thermal stress levels to duplicate a broad spectrum of operational loads. If any failures occur, the company catches them here, before you begin using our product.
Then, and only then, are Bryston products sent to the final quality inspection area for a comprehensive and carefully documented test of all their functions. The printed results of this computer-aided analysis are actually shipped with each unit. During this intensive procedure, Bryston rejects any product that falls outside of advertised specifications, or an even narrower band of specifications used for internal testing. As a result, you can expect each Bryston product to perform as least twice as well as the advertised specifications.What kind of manufacturer's warranty do Bryston products have?
The Bryston manufacturer's warranty is unprecedented in the consumer electronics market.
Bryston analog audio circuits are warranted to be free from manufacturing defects for twenty (20) years from the original date of manufacture. The warranty includes parts and labor.
Bryston Digital circuits and cables are warranted for five years from the original date of manufacture. The warranty includes parts and labor.
Bryston products having motorized moving parts, excluding motorized volume controls, are warranted for three years from the original date of manufacture. The warranty includes parts and labor.
In the event of a defect or malfunction, contact Bryston's repair centers for return authorization.
"The BP17 represents a good middle ground product in Bryston's preamplifier line-up. It has low distortion, plenty of output capability even into low impedance loads, and several optional features such as a phono stage and DAC. Solid build and essentially a lifetime warranty round out the BP17, making it an obvious product to consider in setting up, or upgrading your two-channel audio system."
- John E. Johnson, Jr., Secrets of Home Theater and High Fidelity, May 29, 2013
Audio Advisor Review - Bryston's Warranty