Tboneous Posted March 20, 2014 Share Posted March 20, 2014 the DT50 does not have preamp tubes... it has an inverter 12ax7 like the dt25 and a boost 12ax7 which the dt25 does solid state... all pre-amps are entirely modeled. I sent my DT50 2X12 in for repairs. Here is how the support ticket went: *Can you tell me what the hell was up with my DT? *Hi, Looks like the tubes were going bad. Normally there's just a 90-day warranty on the tubes, however we replaced the preamp and power tubes on your amp and rebiased them. *Preamp tubes? What you talkin' 'bout Willis? There aren't any Preamp tubes. Right? or am I totally out to lunch? *Hi, yes there are preamp tubes, they're the 12AX7's. There seems to be a bit of a disconnect. This Line 6 person says that indeed, the DT50 has preamp tubes. You are saying that it doesn't. I think a comparative diagram would be helpful. One of a "normal" tube amp and one of a DT amp. Quote Link to comment Share on other sites More sharing options...
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