First off, thanks to Thomann for their impeccable service and unbeatable prices.
I got a quad of these for my old Fender Quad Reverb, I had previously bought a quad of P10R's for my old Super Reverb, after getting a pair of P12Q's, you can see where I'm going, I just love Jensens. These P12R's did not disappoint. Crisp very crisp, I don't use OD pedals, just a germanium treble booster to push the pre-amp valves. With the P10R and P12R, I don't even feel the need for that. Perfectly balanced tone, at medium volumes, sweet sweet cleans and fresh, fine grained crunch tones with soft and round low end, both in the room and through vintage MD421's. Cranked, it feels like getting mauled by angels, angles with chest hair, finger licking good. They pair particularly well with P90's and older Stratocasters. They're beyond recommendation from likes of me, legendary speakers made the way they should be.
Disclaimer, I'm almost 40 and my MK1 ears cut out at 13.5kHz (courtesy of decades of cranked amps).