Class A, A/B vs Class D amp Soundstage


Good evening. 
i just upgraded my Cambridge 850R Class A/B to Cambridge EVO 150 Class D with integrated streamer. I use B&W Diamond II with good cables and interconnects. So, there isn’t really a weak link in my system to be uncovered or exposed when going to a. Class D amp. 
There actually is nothing I changed other than the amps

I lost all front to back soundstage. I lost 50% of my right to left soundstage (speaker position has not changed at all and is 6 ft from the back wall. 
I stream hi-res from Qobuz.  The mid-range sounds a tad bit muffled. The base drivers distort and lower top power than my other amp which remained tight in the base even at ear hurting volume. 
 

The only and I mean only thing I did was change amps. So, I am wondering, does going from a class a/b to a class d amp cause a significant decrease in soundstage?  So far, whatever it is, I don’t like it at all, not one kilo-bit

128x128geworthomd

Actually you changed two things, maybe three. The amp is new, so is the streamer and I am guessing you are using the built in DAC. Any or all of those things together could be affecting your soundstage. 

I'm glad the OP was at least specific in his Classe D amp.  Often we have something like "I switched to Class D and it was not as good..." with no mention of the actual amps used.

Even so, this is not a good test.  You should test against say, another integrated with built in streamer.   Also, check out the NAD hybrid Class D amps and let me know what you think.

Easy. Call Cambridge Audio and talk to one of their experts. I’m sure they would helpful input.

It would help if the OP described what streamer and DAC he was using before and currently.

As to his question about using a center channel for music, , I don’t see how to do this in his current setup 

@geworthomd , Welcome, welcome to the class D sht miracle (promised/touted by the advertising branches).....Now that you've learned your lesson, throw that class D garbage in the garbage can and go back to your AB..or even better yet, try some class A (could get a lil expensive), if you get a chance.