Recently tried LME49990 in my EF-5.. enjoying them very much, I like them more then AD797BRZ.. they are about 3$ each at digikey :D paired with Tung-Sol Black Glass.. a faboulous tube.
Anyone compared black glass to the Full music ? I have not heard that one yet..
I've got a Mullard Short plate, Amperex, Tung Sol Black Glass, RCA Clear Top, and Brimar..
Black glass generaly wins hands down, no matter the op-amp. RCA second, then Short plate, brimar, and...