Bryston 4B³ Cubed 300W Stereo Power Amplifier

4B³ Cubed 300W Stereo Power Amplifier

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The Bryston 4B3 is a dual-mono, solid-state stereo amplifier, with two separate power supplies that include two large, stacked toroidal transformers with 300 Watts per channel into an 8 Ohm load or 500 Watts per channel into a 4 Ohm load.

The first incarnation of the 4B came out in 1976 and became an instant classic. The latest version, the Cubed, sets a new standard of audio purity with their patented Salomie circuit. It does everything just right from the deepest bass to the highest treble.

It has both single ended RCA jacks and balanced XLR inputs. It can be set to bridged mono mode for a whopping 900 Watts RMS.

Hand made in Peterborough, Ontario and a 20 year warranty is standard. Available in either black or silver and your choice of a 17" or 19" wide face plate.

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Frequency Response
<1Hz to 100kHz (-3dB)
Total Harmonic Distortion Plus Noise <0.005%
Power Output (Per Channel)8 Ohms
Power Output (Per Channel) 4 Ohms
Noise - Unbalanced (RCA) -112dB
Noise - Balanced (XLR) -117dB
Input Impedance - Unbalanced (RCA) 7.5 kOhms
Input Impedance - Balanced (XLR) 30 kOhms+ / 6 kOhms-
Selectable Gain 23dB / 29dB
Standby Power Consumption <500MW
Dimensions WxHxD 17/19" x 6.3" x 15.5"
Dimenions (With Front Handles) WxHxD 17/19" x 6.3" x 17.75"
Weight 42lbs (19kg)

A summary of reviews at the eCoustics website.

SoundStage Recommended Component

Review from Novo Press