Cables/Ic

I am driving thiel CS6s with two Classe Cam-350s and a Classe 300 processor.I tried Analysis Plus micros beteween my Oppo 981 and the 300, a world of improvement over my existing Audio quest ICs.Next I added Analysis Oval 9 12' speaker cables.The sound was very bad,I lost all detail and gained some heavy flat bottom.Granted the cables were too long and the older purple version,however the sound has taken me aback!Any suggestions and or thoughts on what I should try next??

Thanks