I honestly wouldn't spend too much money on cables or power conditioning if you envision upgrading equipment. You'll find yourself spending $500-$1000 on cables/power conditioning when you could just use that money on speakers or a new amp.
I haven't heard the Quad 12L2s, I do have a pair of 22L2s which have been wonderful for what they cost. Still tricky to pair with equipment, but much less bright than MA and just as revealing (much better soundstaging).
Once you're comfortable with the amp/speaker combo, it might be better to focus on cables. If you're getting great sound out of cheaper cables (with good equipment matching that YOU like), better cables will only further the benefit you've got from that good equipment matching.
I've gone through Cardas (Golden Cross, Golden Reference), Acoustic Zen (Matrix II and Silver Reference), HGA Silver Lace, Audioquest Panther DBS, Tributaries Silver, Monster Cable, etc. I've also gone through VH Audio Airsine, PS Audio Lab, Zu Audio Birth, Shunyata Taipan Helix and Python Helix power cords. All of these cords shape the sound one way or another (some for the worse depending on your setup/tastes). I seriously doubt any of the aforementioned will qualm an excessively bright amp or speakers to the point you'll feel satisfied.
Key word is excessive brightness. If the setup is marginally bright or you have a slight bit of etch, cables work wonders...as does power conditioning and adding/removing sound isolation....and speaker placement.
I haven't heard the Quad 12L2s, I do have a pair of 22L2s which have been wonderful for what they cost. Still tricky to pair with equipment, but much less bright than MA and just as revealing (much better soundstaging).
Once you're comfortable with the amp/speaker combo, it might be better to focus on cables. If you're getting great sound out of cheaper cables (with good equipment matching that YOU like), better cables will only further the benefit you've got from that good equipment matching.
I've gone through Cardas (Golden Cross, Golden Reference), Acoustic Zen (Matrix II and Silver Reference), HGA Silver Lace, Audioquest Panther DBS, Tributaries Silver, Monster Cable, etc. I've also gone through VH Audio Airsine, PS Audio Lab, Zu Audio Birth, Shunyata Taipan Helix and Python Helix power cords. All of these cords shape the sound one way or another (some for the worse depending on your setup/tastes). I seriously doubt any of the aforementioned will qualm an excessively bright amp or speakers to the point you'll feel satisfied.
Key word is excessive brightness. If the setup is marginally bright or you have a slight bit of etch, cables work wonders...as does power conditioning and adding/removing sound isolation....and speaker placement.