I've been trying a number of pedals for a boost for leads with an EL84 based amp. I'm new to the EL84 scene, and really like it for a lot of things. However, being able to kick it into a thicker lead tone would be nice. I've tried an Analogman tube screamer, SD9, COT, RC/AC Booster, and cannot wring out a totally satisfying lead tone. I haven't had this difficulty with any EL34, 6L6, 6V6 based amps. It may be the nature of the beast, but if anyone has luck with something let me know. I should mention its a Vox clone type.