Power amplifiers stereo — Bryston BD-325

The BD-325 is a stereo power amplifier from Bryston, sitting above the BD-225 with considerably greater output power and an even wider bandwidth. The BD-325 brings Bryston's more accomplished current engineering to a two-channel power amplification format.

Key specs that matter

Input sensitivity is 2,000mV. Output power is 325W into 8 ohms, doubling cleanly to 650W into 4 ohms - a textbook power doubling indicating a robust, well-regulated power supply. Gain is 29dBu. Frequency response spans an extraordinary 1Hz to 50,000Hz within plus-or-minus 3dB, extending wider than the BD-225. Signal-to-noise ratio is 105dB. At 133 x 450 x 425mm and 26kg, the BD-325 represents a substantial stereo amplifier commitment.

Sound and use context

Expect substantial power delivery combined with clean measured performance reflecting the solid 105dB signal-to-noise figure, consistent with Bryston's broader considered engineering approach.

Pairing

The clean power doubling into 4 ohms suits a wide range of loudspeaker impedances, well beyond what the BD-225 comfortably provides.

Alternatives

Bryston's own BD-225 sits below this model at more moderate (though still substantial) output, worth considering instead if the BD-325's additional power exceeds what a specific loudspeaker requires.