I have both NOS and re-issue tungsol 6550s, splitting hairs but pretty close.
also the chinese offer some really great sounding tubes. Used to have a premier 11a. If memory serves ran KT90s in it.
check out the PSVANE gray glass KT88s. pretty nice tube.
also the chinese offer some really great sounding tubes. Used to have a premier 11a. If memory serves ran KT90s in it.
check out the PSVANE gray glass KT88s. pretty nice tube.