Bryston 9B³ Cubed Multi-Channel Amplifier

Cubed power for every seat in the room

The Bryston 9B³ Cubed Multi-Channel Amplifier puts three, four or five independent amplifier modules in one chassis, each rated at 200W into 8Ω and 300W into 4Ω. Every channel is a complete Cubed amplifier rather than a shared board, so a home theatre gets the same treatment Bryston gives its stereo customers. Choose the channel count that matches your system when you order.

Why You'll Love It

• Buy only the channels you need. Three, four and five channel builds mean you are not paying for amplification you will never connect, and one chassis replaces a stack of separates.
• Every channel treated equally. Independent amplifier modules give the surround and height channels the same 200W and the same circuit as the front pair, which matters when a mix moves across the room.
• Silent and rack ready. Convection cooling means no fans in the equipment cupboard, and the 19 inch faceplate option drops straight into a rack.

Under the Hood

• Patented Cubed input stage with the Salomie circuit on every channel, plus SoftStart to control the turn-on surge across all modules.
• Balanced XLR (pin 2 positive) and unbalanced RCA inputs per channel, switchable 23dB or 29dB gain, and speaker binding posts that accept banana, spade or bare wire.
• Frequency response below 1Hz to 100kHz at -3dB, THD below 0.005% at 200W into 8Ω, with a DC trigger input and passthrough for system control.

CHT Insider Verdict

The 9B³ is the sensible way to run a serious multi-channel system without filling a rack with stereo amplifiers. Because the channel count is fixed when it is built, think carefully about where your system is heading before you choose, since adding channels later is not a plug-in job. For a five seat cinema or a high end Atmos front stage, it is hard to beat on consistency.

Pro Tip: Set the gain switches to match the rest of your amplification, not just to whatever is loudest. Mismatched gain between the 9B³ and another amplifier in the same system will throw your channel level calibration out before you start.