[clayeton]

I currently have a 4B ST and have been looking at either getting a pair of 7B ST's or a 14B SST.  If I was to bridge my 4B ST and add a second 4B ST - would it come close to the sound improvement I could expect from a pair of 7B ST's? 

Thanks for the help,

Clayeton 

[SoundGame]

Nope.  Bridging Bryston amps is not something you do for increased performance - it raises the distortion levels.  if you don't absolutely need the extra power, you are probably better off going to a 4B-SST amp for enhanced performance.

[srb]

It's also not something you would normally do if your speakers are 4 ohm or below.  The bridged amplifier sees half the impedance, and a lot of amplifiers don't like to spend a lot of their time at 2 ohms or below.
 
Steve

[JfTM]

Isn't a 7B bridged?  The two modes are based on how it is bridged?

[larevoj]

You are better off with 7BSST2.

[alexone]

...correct me if i'm wrong but bridging an amp (here the 4B) might give more power BUT it reduces the damping factor (up to 50%?!?) which is important for bass control.

al.