Bryston impressed the audiophile community with an ultimate fully active loudspeaker system that lets you choose your amplifiers. Listeners were free to build 6-channel systems any way they liked. Now Bryston introduces the 21B³-an amplifier dedicated to bringing Cubed Series excellence to an easy-to-manage package. Each 21B³ has 3 channels. One is rated at 600 watts, the other two are rated at 300 watts each. Active loudspeaker customers will use the high-powered channel for the bass section and smaller channels for the midrange and high-frequency sections of their 3 way systems. Since the 21B³ is based on our 7B³ and 4B³ amps, it can also be used to power any 3 channels such as the front LCR in a home theatre.
Features
- Balanced XLR and Single-ended RCA input
- 3 Channels each with fully independent power supplies including transformers
- 600W into 8 ohms (and up to 900 into 4 ohms) for one channel. Two more channels each rated at 300W into 8 ohms and 500W into 4 ohms.
- 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 aluminum 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
- Legendary Bryston 20-Year Warranty
Options
- Silver or black faceplate
- 17” or 19” faceplate (non-rack mountable) 19" comes with front-mounted handles
Specifications
Dimensions- Inches: 17 or 19 W x 8.1 H x 16.8 or 18.4 (with front handles) D
Weight- 91 lbs | 41 kg
Freuqnecy Response- <1Hz - 100kHz: -3dB
THD N (20Hz-20kHz @ Rated Power, 8Ω)- <0.005%
Power Output (per channel)- CH 1: 600W @ 8Ω | 900W @ 4Ω
CH 2&3: 300W @ 8Ω | 500W @ 4Ω
Noise- RCA: <-115dB
XLR: <-116dB
Input Impedance: Unbalanced 7.5kΩ
Balanced 5Ωk/leg
