That every pair I have tried so far sound like a rubberband being plunked and have no sustain? The rubberban plunking sound usually comes on around the low "C" and up to "D#". The sustain was lacking as well compared to some Celestions. I've seen this on Wizards and Tonespotters so far. It's funny how my greenbacks or a set of g12-65's didn't do this, but the Eminence did. This was emulated on multiple brands of amps, with various NOS and current manufacture tubes. What gives here? Edit: They didn't display these characteristics untill pushed a little.