BRYSTON 28B-SST2

With the 28B-SST the input stage has been redesigned – instead of a single differential op-amp there are two differential op-amps that copy the out-of-phase architecture of the output stage; both signal paths are therefore totally symmetrical. The other important element of the 28B-SST’s construction is elimination of most internal wiring in favor of direct soldered contacts on PCBs. Finally there is a new oversized power transformer with 2000VA rating that lends the 28B-SST the ability to deliver unbelievable 1300W into 8 ohms for monophonic channel. The most other building blocks are inherit from the 7B-SST including its bipolar nature but excluding a new ON-OFF button with very smooth operation. There is nothing to mention on the Bryston’s faceplate except this button and a small green diode that goes orange in case of overheating or red if the amp is overloaded or clips.

On the 28B-SST rear panel you would find a circuit breaker switch, a power-up mode switch and the gain (23dB/29dB) selector. Also present are the single-ended and balanced inputs and two pairs of bi-wirable speaker terminals that accept bare wires, small-sized lugs or bananas. Yes, and there are also two handles on the rear panel that greatly facilitate any manipulation with the amp – a feature that is often missing with competitors and which is quite essential if you want to avoid damages to your health or equipment.

Apart from the impressive 1,3kW output into 8 ohms (Bryston does not specify the output into 4 ohms but theoretically it should reach values around 2kW) the monoblocks boast of not less impressive signal-to-noise ratio that exceeds 110dB, at least on paper. Considering the overdimensioned power handling one cannot expect the 28B-SST to be environmentally very friendly: it consumes 215W at idle without playing a single note. This is a minor issue as high-end audio is not a green hobby at all.