Well,
@Paul7777x
I tried the reset. It made zero difference.
Today I decided to try something different. I hooked up the Oberons 5's to my Denon avr2600h,
Voila, instant treble. I was literally blown away with the improvement, don't get me wrong, I know there was lacking in the overall sound. But I now have got faith in my Oberon 5's.
I first played Dark side of the moon through the CD11 and A11. Dull, like as if the tweeters were disconnectred almost.
DSOM via Tidal hifi via WXAD10 > A11 > Oberon5. a bit of an improvement, but nowhere near great.
disconnected the Oberons and hooked them to the 2600 which has streaming.
same two tracks via Panasonic UB820 - 4k player > Denon . Oberon5 = I was like "There you go"
Same two via Tidal hifi > Denon >Oberon5 = Brilliant.
When I say lacking in overall sound. I mean I had no control over the bass/treble to adjust.
Hooked up my Planar 1 as the 2600 has a phono in.
Volume was low. SQ was improved over the A11 but not by a big margin. But I feel a half decent phono stage would have improved it even more.
So now, I feel the Rotels are the culprit. Looks like replacements are in order. But what do I go for?
Thanks