Classe Processor and Amp

The Oppo's XLR outputs are driven by an entirely different and more expensive output stage by the way, it's not just about the cables in this case. :)

Best,

Erik

I don't think my Oppo 103 has xlr digital out. 

I have a SSP800 and had similar problem.. When setting the balance between R & L speakers using an SPL meter , they say to set the meter to C weighting, slow response, and 75db range.. Unfortunately the meter app I downloaded on my smart phone can't be set at 75db.. 70 or 80 is the settings I can use... First I did the 70db and found the volume was low like how you described (but not as dramatic).. Next I used the 80db and that solved the problem.. Another thing that came to mind is - can your SP300 handle the HD codecs ? Try setting the Oppo to output regular Dolby/DTS ..  Also I read somewhere that setting the bluray player isn't a good thing to do because the higher you set it, the bit rate drops... I have my Oppo volume set low and have no problem with the volume coming out..

setting the bluray player to 100  

I have the older version clase sp 25 connected to a Bryston 3B and am getting the same problem, am not using the central channel because is only stereo, can I hook another three channel power to the processor? Hope that way I don't have the same problem 
thx