FS: This is a matched quad of vintage 1950's blackplate Sylvania 6BQ5 tubes. These are Baldwin branded and were specially selected by Baldwin for low michrophonics as they were originally used in their bass amps for organs. These have been tested in my B&K707 mDynajet tester and all test strong and matched. I have also tested them in my Tubelab SPP and they sound great.
These are basically 7189 tubes and can stand much higher voltages than modern equivilents. Ask Tubelab, I believe he found in testing that these Sylvania Blackplates could withstand the most abuse.
$75 for the quad plus shipping. Paypal friends and family please.
Please feel free to ask any questions you might have. I have other tubes listed for sale in the swapmeet if there is something else you might be looking for. Combining shipping save cash!
Shipping is from Vienna, Austria.
Thanks! -Mac
These are basically 7189 tubes and can stand much higher voltages than modern equivilents. Ask Tubelab, I believe he found in testing that these Sylvania Blackplates could withstand the most abuse.
$75 for the quad plus shipping. Paypal friends and family please.
Please feel free to ask any questions you might have. I have other tubes listed for sale in the swapmeet if there is something else you might be looking for. Combining shipping save cash!
Shipping is from Vienna, Austria.
Thanks! -Mac
