A
~Abstract~
New member
Replaced tubes 1&6 with SED Winged C EL34 - biased at 80ma for the pair
Tubes 2&5 Ruby EL34-BHT - biased at 72ma for the pair
Tubes 3&4 Ruby EL34-BTH - biased at 72ma for the pair
Question.
Is the bias on tubes 1&6 too hot? They aren't red plating and the heaters LOOK noticably dimmer than the Ruby's.
I generally play only at low to medium volumes....but the amp sounds INCREDIBLE so I'm hesitant to back the bias down...unless I'm risking a catastrophic failure.
Thank you.
Tubes 2&5 Ruby EL34-BHT - biased at 72ma for the pair
Tubes 3&4 Ruby EL34-BTH - biased at 72ma for the pair
Question.
Is the bias on tubes 1&6 too hot? They aren't red plating and the heaters LOOK noticably dimmer than the Ruby's.
I generally play only at low to medium volumes....but the amp sounds INCREDIBLE so I'm hesitant to back the bias down...unless I'm risking a catastrophic failure.
Thank you.