Dave_72, Have you compared the A21 to your 4BSST. I was wondering how I would be able to identify a middle or the road vs really high end component, if I get a chance to compare
Sorry, I haven't. I have heard them separately. Well, I wouldn't say the 4BSST is really high end. That is reserved for the big boys of the Bryston line; 14BSST2 and 28SST2.
Anyway, a middle of the road component will be a bit restricted in the frequency response and dynamic range. The music sounds more canned. A real high end component will be effortless in frequency response and dynamic range. You're coming very close to recreating an actual live event and approximating the sound of real instruments.