Bryston 4B³ Power Amplifier – Silver

Here we have a very high quality power amplifier from Canadian specialists Bryston. Our example of the 4B3 is in very good condition noting a couple of very minor blemishes, and will come supplied in original factory packaging with mains cable, manual and our usual three month warranty.
Bryston Say….
A rarified few components in audiophile lore have become so ubiquitous that nearly every music lover once had, lusted after, or if they’re really lucky, currently owns one. One such legend is the Bryston 4B. This product has been manufactured continuously (though often refined) since 1978. Currently this venerated amplifier is on its 6th generation, and it’s never been better. Now rated at 300 watts per channel into 8 ohms, (and upwards of 500 into 4 ohms), this true dual-mono amplifier is powerful enough for practically any speaker, yet it’s priced to remain within reach. The degree of clarity, power, nuance, and outright truthfulness of this amp is stunning. If you’ve always wanted one, maybe now is just the right time.
Features:
Balanced XLR and Single ended RCA input
2 Channels each with fully independent power supplies including transformers
300W into 8 ohms (and up to 500 into 4 ohms) per channel
The patented Salomie circuit found in all Cubed Series amplifiers
Switchable gain (23dB or 29dB)
Fully convection cooled means no noisy fans
Machined and anodized aluminium enclosure and dress panel
Less than 500mW standby power consumption
Softstart microprocessor controlled startup sequence won’t trip circuit breakers
DC trigger for automated turn on and turn off
Specifications:
Power Output Per Channel: 300 Watts into 8 Ω Load; 500 Watts into 4 Ω Load
Gain High: 29 dB, 28.28 V/V; Low: 23 dB, 14.14 V/V
Sensitivity: High: 1.00 V, 100 W; High: 1.73 V, 300 W; Low: 2.00 V, 100 W; Low: 3.46 V, 300 W (all into 8 Ω)
Input Impedance: Single Ended ≈ 30 kΩ; Balanced + ≈ 30 kΩ; Balanced – ≈ 6 kΩ
IMD: ≤ 0.005%, Typ. ≤ 0.002%
THD+N: 20 Hz – 20 kHz @ 300 W, 8 Ω ≤ 0.005%
Noise: SE: High: 29 dB < – 111 dB; SE: Low: 23 dB < – 116 dB; Bal: High: 29 dB < – 112 dB; Bal: Low: 23 dB < – 118 dB
Slew Rate: > 60 V / µS
Bandwidth: 0 – 3 dB < 1 Hz to > 100 kHz
Frequency Response: 0 ± 0.1 dB, 20 Hz – 20 kHz
Damping: 20 Hz, 8 Ω, > 500
Power Consumption: 300 W 8 Ω: 1000 W; Idle: ≤ 80 W; Standby: < 0.5 W
Dimensions: 430 (W) x 395 (D) x 63(H) mm
Weight: 19.1 kg

To read a review by Jason Kennedy from online review site “The Ear” please click here