Before you buy from Upscale, also checkout the original (from the 70's) Tesla E88CC (6922) and ECC88 (6DJ8). Both sounds exactly like the Telefunken E88CC and ECC88. I have both the telefunken and the Tesla (not JJ Tesla) and I can't tell them apart.
Another quiet and nice sounding tube:
Siemens 7308 A frame. Excellent for phono stage where you need the super low noise the most.
I personally prefer 6DJ8 (7308 is the low noise for 6DJ8) over 6922 family (CCa is the low noise for 69222)
If you prefer more forward sound stage, Amperex D getter 6DJ8 is the best I've ever heard so far. They're pretty quiet too. The "D" getter is from the 50's and early 60's.
Believe me when I say I tried over 20 different type of 6DJ8 tubes.
Another quiet and nice sounding tube:
Siemens 7308 A frame. Excellent for phono stage where you need the super low noise the most.
I personally prefer 6DJ8 (7308 is the low noise for 6DJ8) over 6922 family (CCa is the low noise for 69222)
If you prefer more forward sound stage, Amperex D getter 6DJ8 is the best I've ever heard so far. They're pretty quiet too. The "D" getter is from the 50's and early 60's.
Believe me when I say I tried over 20 different type of 6DJ8 tubes.