Need a mellow A string
I love my violin, but the A string is so brilliant to the point that it is a bit harsh. My violin is naturally bright, which I like, but I need to mellow my A string a little bit. Any suggestions will be greatly appreciated. I heard the obligatos where good to mellow\darken a violin. I currently use PI strings.
Maybe Warchal Karneol?
This might be doable with a soundpost adjustment.
Hard to know, since we can't hear your violin; but if you can get another player or a luthier -- or your teacher, if you have one -- to play your instrument 10-20 feet away from you, you should get a better idea of how your A sounds to an audience with this instrument.
Try the obligato.
You could try putting a plastic sleeve on the A string like new E strings typically come with although I always remove them before installing the E. Or maybe you could try a small piece of leather under A and hope that it doesnt buzz.
+1 on Eudora aricore
I've had good experiences with Pro Artes (without E) on my current violin. The A and D strings are mellow and dark, and they're very cheap.
Give a plain gut A a try-out. I say "plain" because in my experience the plain gut A gives a better tone than the corresponding covered gut A (Eudoxa), is less expensive and lasts noticeably longer without losing its tone (a bug-bear of all covered strings). The Pirastro Chorda A is the one I'd recommend, if only because I can buy it over the counter in at least two violin shops within walking distance. But of course I'm very satisfied with it and see no need to go further afield for other makes.