Re: [Harp-L] old princeton preamp swap?

["Ralf K. Buschner" <r_buschner@xxxxxxxxxxx>]

Blake,

> O.k., assuming I can get different tubes, which one or ones do I switch?
> How is this done? What tubes should I look for to get more volume without
> feedback?  Any other feedback advice with my configuration?

a 12AT7 for the preamp should help. Eventually a 12AY7.
What i also tried successfully for avoiding feedback, is a Hush pedal, one of 
those old, black ones. Now and then one shows up in Ebay.

Greetings from Bavaria,
Ralf