6DJ8 vs. 6922?

I rolled these in a Steelhead and preferred the sound of old Telefunkens to the Siemens b/c they were more 3d though the Siemens were probably more linear. It may depend on the circuit and the overall voicing of the system. At the time I was buying them they weren't hard to find as true NOS. Today, have no idea.

I went through bags of 'em in my old ARC SP10mk ii mainly b/c the phono section was extremely microphonic. I could never get that preamp to play quietly although it was a jewel in their line at the time and went back and forth to ARC many times for factory mods. 

I like GE and Sylvania. All these tubes are interchangeable!

The 6DJ8 is a dual triode preamp tube. ECC88 is the European designation for this tube. 6922 and its European equivalent E88CC are premium versions of the 6DJ8. 7308 and E188CC and the CCa are super premium versions.

Mazda 6922's are also really nice sounding tubes top to bottom. Use them in my Modwright Elysee DAC

Great info, thanks one and all.

My favorite is the Valvo CCa and second is Amperex PQ 6922 used in my Pathos Classic MKIII.