For your information, it is quite possible to improve the sound quality with power cables.

Power cables range from a few hundred yen to Tigron power cables costing more than 200,000 yen.

Speaker cables can also improve sound quality.

PCOCC speaker cables are not recommended because they emphasize high frequencies.

Banana plugs (speaker cables should be double the length of the banana terminals, and folded in half to get the right thickness. Then screw it back on!) ), Y-lugs, needle plugs, or even no plugs can improve the sound quality.

Bass, mids, and treble can be extended, partially emphasized, a little weak, flat, glossy, warm, cool, dry, or

Wet, deep, dry, or wet.

instruments and voices sound more vivid, the grain of the sound is finer, the soundstage is wider, and the resolution is higher.

The soundstage can be wide, or the resolution can be high.

If both ends of analog cables, digital cables, and optical cables have the same terminals, swapping them by 180 degrees can change the sound quality completely. Changing the hole for the power supply can also change the sound quality.

Please try various things little by little according to your income.