Bryston BP 1.5 Manual, BP 1.5 Description, Mute Switch

BRYSTON BP 1.5 MANUAL

BP 1.5 Description

Turn On Relay:

Preamplifier Gain:

The BP1.5 utilizes an output shunting relay with approximately a 3 second delay at start-up to allow any system transient/thumps to settle out before connecting the signal. The front panel LED turns Red on power up and clicks to Green when status is confirmed.

Mute Switch :

The Manual MUTE switch on front panel can be activated at any time. This switch mutes the output and is indicated by the front panel LED turning from Green to Red.

Mute Relay :

When you power down the BP1.5, by turning off the outboard power supply the mute relay is activated and the LED will go from Green to Red. then Off This prevents any power supply decay artifacts from reaching the outputs.

BP1.5 includes two different amplifier modes to accommodate both MM (moving-magnet) and MC ( moving-coil) Phono Cartridges.

The Moving-Magnet mode comes factory set at 35dB of gain but can be adjusted with an inside jumper to 41dB gain. (See figure 3, Page 3)

The Moving-Coil mode adds an addition gain stage to the MM stage with a step-up trans- former. This step-up transformer has adjust- ments for gain as well. It can be set for 22.5dB or 16.5dB of gain. It is factory set for 22.5dB as this will facilitate 90% of the MC cartridges available. The standard gain of 22.5dB accom- modates cartridges with outputs of less than 40 ohms impedance. The 16.5dB of gain is for cartridges of 40 to 150 ohm output impedance.

Figure 3

Page 3

BP 1.5 specifications

The Bryston BP 1.5 is an exceptional high-fidelity preamplifier known for its outstanding performance, versatility, and build quality. Designed to meet the demands of audiophiles, the BP 1.5 combines cutting-edge technology with a user-friendly interface, making it an ideal centerpiece for any high-end audio system.

One of the standout features of the Bryston BP 1.5 is its ultra-low distortion design. This preamplifier utilizes advanced circuitry to achieve exceptional audio clarity, maintaining signal integrity and delivering a pure listening experience. The BP 1.5 employs a fully balanced differential architecture, which significantly reduces noise and interference while maximizing dynamic range. This design ensures that the sound remains accurate and true to the original recording, allowing listeners to experience their music as intended.

The BP 1.5 is equipped with multiple input options, including balanced XLR and unbalanced RCA connections, providing flexibility for various audio sources. The unit features five line-level inputs and a dedicated phono input that supports both moving magnet and moving coil cartridges. This versatility enables users to connect their turntables, digital sources, and other audio devices without compromising sound quality.

Another notable characteristic of the BP 1.5 is its sophisticated volume control system. Bryston employs a high-precision digitally controlled analog volume circuit that enhances the listening experience by providing precise volume adjustments while minimizing signal degradation. This feature ensures that users can enjoy their music at any volume level without losing detail or introducing unwanted noise.

The BP 1.5 also includes a remote control, allowing users to adjust settings from a distance, enhancing convenience and ease of use. Additionally, its sleek and timeless design ensures it will complement any audio setup while its robust chassis guarantees longevity and durability.

Bryston is known for its commitment to quality, and the BP 1.5 is no exception. It comes with a 20-year warranty, reflecting the brand's confidence in its engineering and manufacturing excellence. This long warranty period emphasizes Bryston's reputation for building reliable and high-performance audio equipment.

In conclusion, the Bryston BP 1.5 preamplifier is a remarkable piece of audio technology that excels in sound quality, versatility, and durability. With its advanced features and meticulous engineering, the BP 1.5 is an outstanding choice for audiophiles looking to elevate their listening experience to new heights.