IMHO, I would definitely buy but get the extended warranty.  My DT50 is currently in the shop to have the power transformer replaced.  I want to brag on Line 6 for a second here by saying that my amp was just outside the 1 yr warranty - I asked them to have mercy and cover the repair under warranty and they did.  This of course is no guarantee they'll do it for anyone, but I was so pleased that they did that for me and want to brag on them a bit.

During the year I've owned it, my DT50 was used mainly for bedroom practicing, some playing at church, so it was definitely not stressed.  I don't think I've ever gone beyond 10:00 in full power mode, 12:00 in low power mode.  I question whether amps built around this time (mid-2011) perhaps had a flaky batch of transformers, who knows.  I did read yesterday something on Soldano's website about EL34 tubes stressing out the power transformer more than other tubes (http://www.soldano.com/amp-help/guitar-amplifier-tube-swapping).

I was happily jamming along at bedroom levels when the breaker in the room tripped.  I thought our neighborhood lost power, but then saw lights on in the next room.  Then I knew something bad happened.  Weird that the mains fuse didn't blow.  I unplugged the amp, reset the breaker, plugged back in and hit the switch, this time the fuse blew (the lights went pretty dim!).  Pulled the tubes, replaced the fuse and tried again with the same results, so I knew at that point the transformer was probably toast as opposed to a shorted tube.

Again, I love the amp, the tone, the look.  I wouldn't hesitate to buy again, but get the extended warranty just to be sure you're covered.

Randy

I would wait until Line 6 gets their act together on the DT amp series before investing near $1800 for the amp and the HD POD like I did. For a lot less I could have bought a decent mfx unit and a good Fender or Vox amp that would have given me no problems and been done with it. On another note I took another amp I have in for servicing the other day and there were Line 6 amps and pedals all over the place. I asked the tech (and owner of the repair shop) if he gets a lot of warranty work on Line 6 pedals and he shook his head like he was saying, "oh yeah, they makin' me lots of money".

So Line 6 if you're reading this, all of the warranty centers appreciate you keeping them in business and don't mind taking as many $$$ as you can send them.