More expensive DAC the answer?

I have a rather modest system. An Yamaha A-S2100 integrated amp, Klipsch Cornwall III load speakers. The room is a bit odd shaped but 30' x 30' with tray ceilings.
The sound is distortion... and a kinda hollow sound.

thanks for info!

The system is made up as stated above with the addition of Yamaha
CD S300 cd player, Technics SL 1600 Mark II with Dynavector 10x5 MkII turntable and cart. The weak link are my cables which are basically just copper. The room is not square in shape, hard to describe.

Based on ideas and advice given above I am going to try an Schiit
Gungnir DAC, and go from there.

Thanks for the great ideas gives me a few paths to follow.

I will also be addressing room acoustics... I think you're right about hollow sound!

Several path's to explore.

Several path's to explore.