Aluminum foil is hard to terminate, copper is easy. Also, not all shields are created equal - it depends on the mass density, and more is better. Canare Starquad is excellent, Mogami is good too, and easier to terminate. I only use the best Canare I can buy, with RCA’s terminated at the preamp. Do it once, do it right, and forget it.
Wrapping power cords and interconnects with copper foil.
Ok..not sure other people have done what I tried recently but I’ve found a night and day difference in sound quality after I wrapped my tube power amp power cord (rogue Zeus) and my cheap audio quest interconnect cables with copper foil. I even wrapped by phono cable coming out of my turntable to phono pre-amp. The detail retrieval and pin drop silence after doing this has made by jaw drop. Cost was $40 worth of foil wrap. What do you audiophiles think? Have I changed the sound signature in a negative way somehow?