I'm using a schertler stat- B. I can't tell if it feeds back less or more than the Underwood I had on before. I have foam stuffed in the f holes and a rag under the tail piece and I use the leather ties on my quiver to dampen the afterlength of the strings. I play a lot of load volume gigs (country band with tele's and drums) and sometimes the crowd is almost loader than us. feedback is almost always a problem. Sometimes I turn the amp right off on stage but the mains are so loud that it still fedds like crazy.
I just have the stat pre right now but I'm thinking about upgrading. Schertler says their Pre A III pre amp has a resonance filter that helps prevent feedback? It looks to me that it just cuts low frequencies. Has anyone used this set up? I've been looking at other pre amps that have the phase reversal, would that be better than the pre A III? Is there better pickups to prevent feddback than the schertler? It doesn't have the pronounced sustain that most piezo's have so I figured the strings would be less likely to take off.
I just have the stat pre right now but I'm thinking about upgrading. Schertler says their Pre A III pre amp has a resonance filter that helps prevent feedback? It looks to me that it just cuts low frequencies. Has anyone used this set up? I've been looking at other pre amps that have the phase reversal, would that be better than the pre A III? Is there better pickups to prevent feddback than the schertler? It doesn't have the pronounced sustain that most piezo's have so I figured the strings would be less likely to take off.

