I received the 14B SST2 (C-Series) earlier this week and it works great with our CJ Premier 18LS preamp
The 14B was replacing a Parasound Halo A21, so I was hoping for a decent upgrade to the audio quality, but was nervous about the decision. Would I hear a noticeable difference (some people say all that amps sound the same)? Would it work well with my setup? Would 900 watts be
too much power since my speakers are 4 ohms? Would the amp be too bright? Would my wife kill me for spending so much on an amp if she couldn't hear any difference from our previous amp?
Well, the 14B SST2 is a wonderful amp that easily exceeded my expectations! It probably isn't fair comparing the 14B to the Parasound A21, but the A21 is the amp that I can best compare the 14B to, having lived with the A21 for the last two years. The Parasound is a great amp for the price.
The 14B is smoother, has less grain and more accurate timbre than the A21. The Bryston doesn't appear to emphasize any frequencies. The A21's upper mid-range was forward in my setup, and the lower mid-range seemed slightly recessed. There is more weight and impact with the 14B than what I am used to with the A21. The 14B is not bright - it is neutral and very musical. When playing complex music the A21 struggled at moderate and higher volumes, while the 14B doesn't appear to struggle with complex music at
any volume.
The "too much power issue" isn't an issue at all. I have the 14B set to 2V and that setting works
very well with the CJ preamp. In fact, at low volumes the Bryston is quieter than the Parasound was at it's recommended gain setting. Listening to music at low volume sounds pretty good with the 14B (can't say that about the A21) and the Bryston “last Watt sounding as good as the first Watt” appears to hold true.
What is really nice with the Bryston is that there is no audible distortion at
any volume and I can't detect any awkward transition from class A to AB. I get the feeling the 14B isn't working hard at all (it probably isn't). With the 14B in our setup it actually seems like there isn't an amp in the mix - adjusting the volume on the CJ controls the
music's volume seamlessly and you don't notice what the amp is doing at all. It's all about the music.
-Greg
Edit - thankfully my wife can hear the difference!