Bryston BP20, BP25 owner manual General Specifications, MPS-1 Power Supply Specifications

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BP20/25 PreAmplifiers

General Specifications:

Frequency Response:

20Hz-20kHz +/- .05dB

Maximum Output:

15 volts unbalanced, 30 volts balanced

IMD/THD: <0.0015% at 3 volts out

Sensitivity:

 

Balanced inputs:

1.00 V

UnBalanced line level inputs:

500 mV

Rated Noise:

-100dB (Ref. 500mV unbalanced input, 20-20kHz) -103dB (Ref. 1 volt balanced input 20-20kHz)

XLR Connector Pin out (Balanced I/O):

Pin 1 ground, pin 2 positive, pin 3 negative

Features:

2 pair balanced female XLR inputs

1 pair balanced male XLR outputs

5 pair RCA inputs

4 pair RCA + 1 pair phono inputs (BP-20/25P and BP- 20/25MC only)

4 pair RCA + 2 SPDIF digital inputs (BP20/25 DA only) 2 pair RCA outputs

1 tape loop

Options:

Silver faceplate & hand held remote (std. is black) 19” x 1.75” Rack mount faceplate (std. 17” long) Moving magnet RIAA phono equalization module Moving coil & moving magnet RIAA phono EQ module

Digital audio input (SPDIF) module

Dimensions:

 

Standard version:

17” x 1.75” x 11”

 

43.18cm x 4.44cm x 28cm

Rack mount version:

19” x 1.75” x 11”

 

48.26cm x 4.44cm x 28cm

Weight:

17 lbs (7.5 kg)

MPS-1 POWER SUPPLY SPECIFICATIONS:

All fuses are 5mm x 20mm, time lag type and are accessi- ble only by removing the top cover. When replacing fuses, disconnect the power cord before opening the unit!

Recommended replacement fuses:

for 100/120VAC models:

Littlefuse 218.315

 

Bussmann GMC-315mA

for 230/240VAC models:

Littlefuse 218.160

 

Bussmann GMC-160mA

Additional Specifications for BP20/25DA:

Input Sample Rate:

16kHz to 108kHz.

Word Length:

16, 18, 20, 24 Bit

Data format:

SPDIF standard

Distortion:

< 0.002%, 20Hz-20kHz

Signal to Noise Ratio:

> 100dB

Frequency Response:

20Hz-20kHz +/- .1dB

Additional Specifications for BP20/25P Phono Inputs:

Distortion:

<0.005%, IM or THD, any frequency or combination of fre- quencies from 20-20kHz, at rated output or below.

Rated Noise:

Phono: -80dBA referred to an input of 5 millivolts RMS @ 1kHz

RIAA Accuracy:

Within less than +/- 0.05dB from 20-20kHz inclusive

Input sensitivity:

5mV

Additional Specifications for BP-25MC Phono Inputs:

Distortion:

<0.005%, 20-20kHz, with preamplifier driven to full rated output

Noise:

Equivalent to approximately 1000 ohm metal film register (Thermal noise greater than 85dB below 0.6mV input, unweighted)

Gain: 16.5 or 22.5dB (internally reconfigurable)

Dimensions: 7.75” x 4.525” x 2.36”h

Weight: 2.6 lb. (1182g)

Electrical: 120VAC/60Hz/29VA, Fuse: 315mA/250V time lag 230VAC/50Hz/29VA, Fuse: 160mA/250V time lag 240VAC/50Hz/29VA, Fuse: 160mA/250V time lag

Frequency Response: Below 5Hz to above 30kHz, within less than +/- 0.5dB

Input sensitivity:

350uV (0.35mV)

Output: +/-28VDC @ 350mA (56VDC @ 700mA)

Sept 2003

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Contents Instructions For Bryston PreAmplifiers Models BP20 & BP25 Important Safety Instructions Additional Specifications for BP-25MC Phono Inputs General SpecificationsMPS-1 Power Supply Specifications Additional Specifications for BP20/25DAConnections to Other Equipment SetupExternal Power Supply MPS-1 and Remote TURN-ON Functions IntroductionOutputs BP25 Remote Control OptionalHeadphone Output InputsFront Panel Controls Visual IndicatorsPhono Equalization Modules Optional Digital Audio Input Module OptionalPage FAX Check OUR WEB Site AT www@bryston.caMail Bryston Directly info@bryston.ca Phone

BP20, BP25 specifications

The Bryston BP25 and BP20 represent a pinnacle of engineering in the world of high-performance audio preamplifiers. Renowned for their exceptional sound quality and meticulous design, both models are integral components for audiophiles seeking unparalleled audio fidelity.

The Bryston BP25, with its robust construction and audiophile-grade components, delivers a highly transparent audio signal that preserves the integrity of the original recording. One of the standout features of the BP25 is its fully balanced differential design, which helps to minimize noise and distortion. This topology results in a cleaner, more detailed sound, making it an ideal choice for critical listening environments.

Equipped with a comprehensive range of inputs and outputs, the BP25 accommodates various audio sources, including CD players, turntables, and digital audio players. One of its notable features is the inclusion of both XLR and RCA connectors, allowing for versatile connectivity options. The BP25 also features a high-quality headphone output, making it a versatile solution for both casual listeners and serious audiophiles who demand superior performance across different listening scenarios.

On the other hand, the Bryston BP20 is a more streamlined model that inherits many of the technological advancements seen in the BP25, but in a more compact form. The BP20 retains the essential elements of Bryston’s design philosophy, offering low noise and high dynamic range. While it has fewer inputs and outputs compared to its larger sibling, the BP20 is still capable of delivering a robust listening experience that rivals many higher-end competitors.

Both preamps leverage Bryston’s legendary build quality. Constructed in Canada, every BP25 and BP20 is meticulously assembled, with an emphasis on long-term reliability and durability. The use of premium grade components, including high-quality capacitors and resistors, ensures that these preamps provide consistent performance over time.

In terms of technology, the BP25 and BP20 utilize Bryston’s proprietary DC power supply, which significantly enhances the overall audio performance. This innovative power supply minimizes unwanted noise and ripple, resulting in a pure power source for the preamps.

With their exceptional performance, diverse connectivity options, and durable construction, the Bryston BP25 and BP20 preamps represent a commitment to quality audio reproduction, making them standouts in any high-fidelity audio system. Whether you are building a new system or upgrading an existing one, both models are worthy choices that promise to elevate your listening experience to new heights.