Happy to see another pillar in the Onkyo A800 communityI think final result it depends on many factors including the source, amplifier and the headphone. Pure silver cables can also have different characteristic depending on quality/type of the conductor and general construction of the cable.
However from my experience silver (DIY, 6N purity in teflon insulation) brings higher resolution, clarity, air. Bass is tighter and overall sound quicker, micro-dynamics are improved. Bass can be even more powerful (punching harder), but because it is cleaner it can be interpreted as reduced. So it is quantity vs quality, but also depends on preference. Silver not necessarily makes the sound brighter, but it can bring to the surface more unpleasant imperfections of the source or recordings.
On the other side silver lacks in my opinion just a little the timbre of copper, especially in midrange and vocals. It is more neutral while copper gives pleasant warmth and colour, which I like.
So silver plated cable can be indeed good solution that connects both worlds. But I wouldn't say it can give the best of both. It will be somewhere between rather.
Another interesting alternative are gold-plated silver cables, but even more expansive.
For Onkyo I can recommend Forza Audioworks Noire Hybrid (7NN UPOCC and silver mix). It makes the sound little darker but resolution is better than stock. Soundstage is wider (on stock I hear it more up and down).
Other interesting cable is 7N OCC Litz Silverplated from Lunacables on AliExpress. It has really great midrange and vocals, comparing even to more much more expansive cables. The resolution and detail is amazing for the price. Soundstage is not very wide, but instead you get intimate and involving vocals.
Appreciate the advice on the cables. Right now, the cable exploration has been on hold. I’ll probably resume around July. My current plan is getting 2 more DAC/Amp just to add in the collection. I do have a bad habit of looking in the used market so I’ll keep my eye on some Forza Hybrid cable, Gold-plated silver cables, and Lunacables. I would most likely stick with SE as well since the equipment I’m getting don’t use balance. I have one tube amp that uses balance, but the other 2 amps I’m planning to get only uses SE output.
Really appreciate the information and glad to see you here @arturro13