I recently demoed the Pro Junior IV at a local GC and immediately fell in love with the tone and simple layout. So yesterday I traded a Squier Deluxe Jazzmaster for this PJ. I am enamored so far with how good this amp sounds. From Teles, to Strats, to LP's to SG's...all sound phenomenal with just a few tone knob tweaks on the amp. To me, the addition of the Jensen P10R has made a huge improvement over previous stock configurations of the PJ.