Drop in sound quality

[MattFarrar]

I have been using my system now for two and a half years:

 

• Meridian 818v3 reference
• Bowers 800D (3)
• Classe mono amps
• Roon (recently upgraded to 1.7)
• Tidal stream through Roon
• Sarum T cables
• MAC Laptop as Roon core (OS: Yosemite 10.10.5)

 

Everything has been working fine until a couple of weeks ago.  I have noticed a considerable drop in sound quality, and I am struggling to understand where on my system I am getting the issue.  To date I have:

 

1 - Tried playing through one amp and one speaker.  It seems to be the same on both which rules out an Amp/Speaker issue

2 - I streamed directly from Tidal on my laptop through USB to the 818v3 and still get the same issue

3 - I have rolled back the Roon software to 1.6 and 1.5 and go the same issue.

 

This leads me to the 818v3 being the problem?  I have reset to factory settings just incase there are some rogue filters, but its still the same problem.  

 

Anybody got any advice?

 

Matt

[MattFarrar]

It looks like my Bowers and Wilkins 800 D3's have total disappeared from my outputs.  I am getting closer to the problem.  Any thoughts?