I traded in my Puma 500 earlier this year. The Hi freq EQ knob stopped working, and when I took it back to the retailer he said that since TecAmp's US distribution network was somewhat "in transition", he wasn't sure how long the warranty claim would take to repair it. Impatience got the better of me, and he offered to take it back in a trade for another head.
Fast forward to now, and since I'm in the market for a 2nd head, I'm back to looking at the Puma 500. As much as I like the sound clips I've heard of the Aguilar TH500, the sound coming from the Puma just sounds a bit more in line with what my ears like (there're Ken's on YT as well as some dude playing a Mayones). Price-wise, compared to the TH500, I don't know if I prefer the tone enough to justify 2x the $$, though!
I plan to give Austin Bass Traders a call once I free up some funds. The newer Puma 500 1HU that I've seen, is that in addition to the regular Puma or has it replaced it? On the TecAmp website, the photo of the Puma is the newer one (seems wider, but less tall), but when you click on the photo, it takes you to the "older" model.
Not sure what is going on with that company at this point. They keep floating prototypes out at NAMM, and then nothing comes of it.
I LOVE the original Puma500.... unique... fat, warm, crystal clear. I call that head the 'Anthony Jackson' head, and for that kind of playing, it is amazing. That isn't really my thing, so I sold mine to TBer emjazz, who attends Berklee, plays a high end humbucker loaded instrument, and uses Berg 112's. Last time we talked, he loves it as I knew he would.
I tried one of the new prototypes, using the ICE module like almost everyone else (versus the Powersoft power module in the original). It sounded quite different, and much more like my Markbass F1/F500 (which is a good thing, but I wouldn't pay that price for it).
I would HIGHLY recommend trying an F500. With the VPF filter engaged at around 9 o'clock, you can get some of that deep, wide, crystal clear type voicing that the Tecamp provides, and the price value is amazing.
I seem to always come back to that particular Markbass spec (the F1/F500).... very clean, loud, reliable, feature packed, small, and you can get it to grind and burp (or at least transmit any grind and burp coming out of your instrument) very nicely to the audience, and also widen and smooth it when playing in less dense mixes, for a very hi fi tone.
IMO and IME. Again, love the original Puma500, but not really impressed with the company at this point regarding communication, product updates, and service. On service, the good news is, if you buy from Glenn at Austin Bass Traders, you are pretty much golden. He's great!