I've tried quite a few 6922 types in my tape preamplifier (Bottlehead Repro)including the Siemens, Amperexes and Teles. The 6922EH is not a bad tube and Bottlehead and CJ get good sound out of it, to wit the ART and GAT.
One tube that you might want to consider that won't cost an arm and leg and has very good transparency, detail and low end extension and tightness are the Telefunken PCC88/7DJ8s. 7308s and E88CC/miniwatt amperexes have a bit better midrange presence and ambience but the low end is not up to the teles.
Myles
One tube that you might want to consider that won't cost an arm and leg and has very good transparency, detail and low end extension and tightness are the Telefunken PCC88/7DJ8s. 7308s and E88CC/miniwatt amperexes have a bit better midrange presence and ambience but the low end is not up to the teles.
Myles