STATUS - AVAILABLE
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Description :
The Bryston 4B is a solid state power amplifier, made by Bryston in Canada. Bryston has been famous for their high-end audio amplifiers and preamplifiers in Canada since the later '70's for their quality sound and reliability. It has a simple design of a heavy, sturdy black box with handles at the side to make it easier to carry. The Bryston 4B uses gold-plated board-edge connectors on driver and input boards and four small 4700uF electrolytic filter caps. Soldered and otherwise gas-tight mechanical connections are used for signal circuits. Circuit boards are very high quality double-sided epoxy-glass, with component-designator screening. After assembly, the amplifiers are bench-tested, then must undergo a rugged burn-in, being driven by a square wave input signal into a capacitive load, slightly under clipping, for 100 hours. After this reliability check, the 4B is again bench-tested. The resulting printout is shipped with the amplifier. These features, as well as other elements of the amp's fit and finish, are consistent with the best instrument standards. The Bryston 4B is almost bombproof, clean, and loads of headroom. The sound it produces is dynamic and responsive to low frequency transients. The Bryston 4B has excellent channel separation and ability to establish a stable sound stage with uncanny directional cues. It had speed, bass control, and lots of "slam." The Bryston 4B is a reliable power amplifier that produces very clean sound for listeners.
Specifications :
Type...............................................Solid State Power Amplifier
Power.............................................200W / Channel @ 8ohm
.............................................400W / Channel @ 4ohm
.............................................800W Bridged/Mono @ 8ohm
Frequency Response........................20 Hz - 20 kHz
Slew Rate........................................60V / microsecond
Total Harmonic Distortion..................0.05%
Intermodulation Distortion..................0.025%
Sensitivity........................................1.25V
Signal-To-Noise Ratio.......................100dB
Crosstalk........................................Below 100dB
Damping Factor...............................500 @ 20Hz
Output Class...................................AB
Dimensions(w x d x h)......................48.5 x 36 x 14 cm
Weight............................................22kg
Miscellaneous :
Made In...........................................Canada
Condition.........................................7/10
Product Information :
http://bryston.com/PDF/Manuals/3B_4B_MANUAL.pdf (Manual)
http://www.dnaelectronics.ca/specs/bryston_4b.html (Specifications)
Reviews :
http://www.stereophile.com/solidpoweramps/592bryston/index.html (Bryston 4B NBR) |