actually i have a JCM800 that i've played for a while with a 2x12 cab with green backs. it has a pretty nice clean sound if you put the pre-amp gain around noon and turn up the volume as loud as you need it. it's almost the exact opposite setup as you'd use for rock. also turn your amp up louder than you need and roll the volume back on the tele. makes a world of difference and use a lot less pre-amp gain. plus my marshall is purple which is probably why it sounds better.