+1@ oldhvymec
Excellent!
Excellent!
Switching from KT120 to 6550, just plug&play or dial back bias?
+1@ oldhvymec Excellent! |
Audio Research VS115 yes, turn down the bias to about 50-60% of what it was driving the kt120’s, and then insert 6550/kt88, then turn on, wait 5-10 min, and bias up from there to the target 65 mv across the test resistor https://forum.audiogon.com/discussions/audio-research-vs-115-bias-adjustments a good reference post for you, op ^^^^ |