I just got rid of my SVT-2PRO and here's why. The PF-50T is not only more versatile... but... LOUDER??? The PF-50T as we all now know, is about the only tube amp that can run without a speaker load. Just use the AUX out to record in silence! Use the output transformer output so you get all the smoothness not just from slightly overdriven pre-amp tubes, but also the tube-amp secret: slightly overdriven POWER amp tubes, along with transformer and rectifier sag. But what if you're not recording? You can also take that aux out and just feed into a WT800 or whatever your choice of high-amperage MOSFET or class-D power is, and output as little as 1W or up to 1000W. You can crank every knob on the 50T to ten and still talk over it if you want, or you can turn the 50T gain to near zero, turn up the MOSFET amp a bit and hear it as clean as a whistle with all the modern headroom you could want. Then take the same setup to a small or large club and do the same. Basically, you're disconnecting the decision of "how hard to drive the power tubes" from the decision of "how loud do you want to be today?" Get any tone at any volume. On guitar amps you can use a Marshall Power Brake or similar, to decouple tone from volume. I've done it for 15 years with my Mesa Road King. The problem though is that guitar amps are typically 100W and that's what the Power Brake is rated for. an SVT 300W would instead literally set the Power Brake on fire. In contrast, the 50T basically has its own internal power brake, so you don't even need its speaker output. Just run its output into a second amp. And whether you want clean modern headroom, or old-skool warmth and compression, and whether you want it at late-nite practice volume or bringing the roof down in a big club, you're set.