Sophia Electric 91-01 300B monos have amazing dynamics, great high and low frequency extension and bass impact. These amps can rock - or "Pop" in your case. Listening to electronica as I write, actually. Plus they don't cost oodles. I purchased them as a step towards a low wattage tube system. until I can afford more efficient speakers, they surprisingly drive my Rega R5's (89dB/6ohm) nicely with only 8 watts. Using a Shindo Aurieges pre-amp by the way.
