Hey all, i sold my smaller older stuff, and just got a Demeter VTBP-201s and Stewart World 600. Problem is, using my Elrick 5 and MTD 4 strings, i cant seem to get the Demeter's volume past 9 o'clock without the low B and even E farting out on my Bergantino HT112. the onboard EQ's are flat. the stewart's set in bridged mode and halfway up. i was running into the passive jack, and also tried the active jack, but couldnt nudge the volume past 10 or 11 o'clock. With my trusty EA iAMP350, i can crank it up ok, and its all good. with a friend's Aguilar DB359, its ok, and no farting. just fine. thinking it was the stewart, i went to a store to get a Peavey DPC1400x and it was ok at first, but later, the farting came back, and i could no longer set the Demeter past 9 o'clock. at first i thought it was the Demeter, but later, when trying another friend's DB680 with the Stewart, the farting came back. ***!?!? the Peavey seems to be all good. what da dilly, yo? is it a bad tube? or just a bad preamp, power amp, speaker? it seems like i cant get alot of headroom from my new setup. Help!