I finally got around to buying a pair of early 60s USA made Amperex PQ 6922 tubes. Both tubes were made in 1961.
Another great tube. Not quite as warm as the early 60s Siemens CCa tube but still a very smooth sounding tube. The 6922 PQ is detailed, fast, lots of air, and liquid sounding. Imo the bass is deeper than the Siemens CCa tube. The sound stage is wide and multi layered.
In an earlier post I mentioned the early 60s USA Amperex 7308 tubes. Imo, in my system, the 6922 PQ is a better sounding tube. Vocals are more involving.
My present tube placement in my Line One
Back row early 60s Siemens CCa
Middle row early 60s 6922 PQ USA
Front row early 60s Siemens E88CC
Audio Research VT50 Amp
All "EH"
Another great tube. Not quite as warm as the early 60s Siemens CCa tube but still a very smooth sounding tube. The 6922 PQ is detailed, fast, lots of air, and liquid sounding. Imo the bass is deeper than the Siemens CCa tube. The sound stage is wide and multi layered.
In an earlier post I mentioned the early 60s USA Amperex 7308 tubes. Imo, in my system, the 6922 PQ is a better sounding tube. Vocals are more involving.
My present tube placement in my Line One
Back row early 60s Siemens CCa
Middle row early 60s 6922 PQ USA
Front row early 60s Siemens E88CC
Audio Research VT50 Amp
All "EH"