cjlover,
It was mostly an improvement in the midrange and highs. More detailed and unveiled. Not a huge improvement, but noticeable.
They (signal tubes) seem to slowly lose their ability to accurately replicate the full frequency spectrum of human hearing. In my opinion loss occurs from the high end down.
BTW...I treated myself to a matched, burned in, quad of 6550's for Xmas....Installed and biased them. No real improvement was noticed after several days listening. Not a bad thing. It tells me the older power tubes are still in good condition and can be used as backup as necessary.
If you have ~2-3 thousand hours on your 6922's it may be time for some fresh ones.
It was mostly an improvement in the midrange and highs. More detailed and unveiled. Not a huge improvement, but noticeable.
They (signal tubes) seem to slowly lose their ability to accurately replicate the full frequency spectrum of human hearing. In my opinion loss occurs from the high end down.
BTW...I treated myself to a matched, burned in, quad of 6550's for Xmas....Installed and biased them. No real improvement was noticed after several days listening. Not a bad thing. It tells me the older power tubes are still in good condition and can be used as backup as necessary.
If you have ~2-3 thousand hours on your 6922's it may be time for some fresh ones.