You hit the nail on the head, the pinched waist are considered the holy grail of the 6299 family. Depending on the function of this tube in your gear you may not notice much an improvemento over the CCa which is head and sholders above the standard E88CC, which in and of its self is better than anything else in that type. other tubers may beg to differ but that is part of the wonderful world of tube amps.
Of the pinch waist tubes there may only be 6 or 7 left on the planet in NOS shape. Unless your are Bill Gates it may not be worth your while chasing them down. Be thrilled that you have the CCa types.
My ears, my gear, MHO....YMMV
Of the pinch waist tubes there may only be 6 or 7 left on the planet in NOS shape. Unless your are Bill Gates it may not be worth your while chasing them down. Be thrilled that you have the CCa types.
My ears, my gear, MHO....YMMV