Telecaster Guitar Forum - View Single Post

Big Cookie · April 5th, 2003, 12:20 PM

Matching is less of an issue in a cathode biased amp like my Sewell, but in a fixed bias amp, you are going to start getting additional hum a around a 7ma mismatch.
In my Crumblers 5ma is about the largest differentiation that I will tolerate, after that the tone seems to suffer. Some wholesalers tolerate up to a 10ma mismatch, for this reason I "fired" a couple of wholesalers last year and now just deal with one, who has promised me 2ma or less tube matching. Matching shouldn't be that much of an issue at less than $2 a pair compared to what the tubes cost.

April 5th, 2003, 12:20 PM	#6 (permalink)
Big Cookie Banned Tele-Holic Join Date: Mar 2003 Location: Ennis, Texas Posts: 693	Matching Matching is less of an issue in a cathode biased amp like my Sewell, but in a fixed bias amp, you are going to start getting additional hum a around a 7ma mismatch. In my Crumblers 5ma is about the largest differentiation that I will tolerate, after that the tone seems to suffer. Some wholesalers tolerate up to a 10ma mismatch, for this reason I "fired" a couple of wholesalers last year and now just deal with one, who has promised me 2ma or less tube matching. Matching shouldn't be that much of an issue at less than $2 a pair compared to what the tubes cost.