Just spent the morning with these 2, side by side, comparing the sound and feel of each one...
I had the DT25 prior to the L3T, cause I wanted to get the best guitar tone possible from my dream rig, and to be in control (for the most part) of tone and volume wherever I would play, and not the sound guy.
The DT25 is great...I mean, really great! Sounds awesome and has a great feel. Plus, it's really simple and easy to get the tone your looking for, and on the fly if needed...I'm really happy with it!
I got the L3T to replace a Bose L1 compact I had. I needed something more powerful than the Bose so I could have a sound system for my keyboard, voice, and acoustic sounds from my JTV.
So, this morning I had them playing side by side. The HD500 was going to the DT25 thru the L6 link and to the L3T thru the 1/4 jack output. I got a loop going on the POD and started cross fading the volumes, and at first I though...WTF!?!? The L3T sounds hooooooooorrible!!! It seemed like a totally different preset/guitar/amp model going on, and I mean TOTALLY! I tried the input on the back, the input on the mixer, and chaging the mode on the L3T. It got really better when in "electric guitar" mode, but still, way off the DT25 sound. I also tried going from the POD to the L3T via L6 link, but still I wasn't happy with it...
After quite some time fiddling with I/O, amps, EQ's, etc, I realized that if the 2 were connected at the same time, sound on the L3T would be awful, but not if I disconnected the L6 link on the DT25. The POD was changing automatically the output to power amp and so the sound on the L3T got terrible.
I then tried again the L3T, with no other connection, and the correct output set on the POD...VOILÁ!!!! Instant great tone!!! After that, with only really minor tweaking, the L3T was sounding awesome in PA mode, better still in electric guitar...I mean, it got sooooooooo soooooooooo close to the DT25 to the point of getting me wondering about actually needing the amp!
Sure, you can still just tell them apart, specially in terms of feel, attack, etc, or if only because the speakers are totally different, but having the tone so closely matched, and being able to also play acoustics (which I need), plus keyboard and voice in 1 single package, really makes the DT25 redundant, at least for me!
I'm really thinking about returning/selling the amp now. My only doubt has to do with one of the main reasons I got the amp, which was to get an even tone/volume wherever I played, since the amp would be micced, but I don't know how well/faithfully will a sound guy be able to mic the L3T, if at all...I had one telling me he wouldn't at all, he would just get it straight out of the pod, but that would defeat the tone/volume control I want, and hand that over to him.
Sorry about the long post, but I had to share my amazement for the L3T sound compared to the DT25