I used to have the Bluejeans speaker cable - they are not bright or forward at all, rather the opposite. So don't change cabling until you've fixed your other problems (room, speaker placement, source, amp).
Please read each guide on this page as a primer on acoustics and speaker set up. It makes a huge difference.
http://www.realtraps.com/articles.htm
Some bad news, all this "direct pass" stuff would do is bypass the (probably extremely crappy) filtering section of your AVR's preamp section. But your (probably extremely crappy) source signal is still going through the (probably extremely crappy) preamp section of your AVR.
Room, speaker placement, new CDP, new preamp, in that order.
When you do get to gear, you might want to shortlist something like the Audiolab 8200CDQ, which is a combined CDP/DAC/Preamp.