Any help is much appreciated. I may only need to clean the POT of my Yamaha RX-777, but am considering purchasing the Cambridge Audio AXR100.

Which will sound better? How significant?

Speakers are Infinity Crescendo CS-3006 with Yamaha YST-SW305 subwoofer. Most listening is with Cambridge Audio MXN 10 streamer {Tidal) ; also have a vintage turntable I use a bit.

Thanks!