Power amplifiers stereo — Bryston 3B Cubed

The 3B Cubed is a stereo power amplifier from Bryston, built with an exceptionally wide bandwidth and strong signal-to-noise figure. The 3B Cubed brings Bryston's considered engineering to dedicated stereo power amplification.

Key specs that matter

Input impedance is 30,000 ohms balanced or 7,500 ohms single-ended. Output power is 200W into 8 ohms, rising to 300W into 4 ohms. Frequency response spans an exceptionally wide 1Hz to 100,000Hz within plus-or-minus 3dB. Signal-to-noise ratio is a strong 111dB via XLR or 106dB via RCA, with total harmonic distortion plus noise under 0.005% at 100% global feedback. At 432 x 395 x 133mm and 19.1kg, the 3B Cubed represents a substantial power amplifier commitment reflecting Bryston's considered Canadian engineering standards.

Sound and use context

Expect exceptionally clean amplification reflecting the exceptionally wide 1Hz-100kHz bandwidth combined with the strong 111dB XLR signal-to-noise figure, consistent with Bryston's broader precision engineering philosophy.

Pairing

The substantial 300W into 4 ohms output handles demanding loudspeaker loads with considerable headroom.

Alternatives

Bryston's broader power amplifier catalogue offers alternatives at different power tiers for buyers wanting a different balance of features.