Big Brother has arrived - a 1976 RCA 6AS7G tube. Can it be used with the LD MKIII as a driver tube with an amplification factor of 2?
Man, this tube is BIG (compare to the 6SL7 power tube in the background.). What about the show-off factor?
Hard to get all the glowing wires into one view. Is it usable? Yes, but instead of keeping the headphone volume at 9 o'clock I have to turn it to almost max at around 4 o'clock.
First impression of sound: Hefty strong bass with a nice laid back mellow presentation with very good detail. There is a total absence of sibilance in the treble; but no wow factor - I guess that I am a little spoiled from all the great tubes we'd tried lately. Could be that the tube needs burn in so things may change - this is only the initial impression.
Patience pays off: Been looking for inexpensive 6AS7 and 6080 tubes. Finally found this tube, a bunch of 6080's + three other SN tubes. All in all 11 tubes for less than $2 each shipped from two different sellers.
This tube needs a diet of 7.11V from the voltage regulator to get 6.3V at the tube pins.
After listening for a while this tube is starting to grow on me (pun intended). I can "see" into the recordings and notice new micro details. The instrument separation is excellent without being artificially analytical. Have to take back what I said about the wow factor - it's just not a wow factor in your face, but, yes it's there, but more subtle.
Happy tube rolling!