I've tried alot of SWR heads over the years and nothing has really grabbed me. This weekend I had an out of town gig, and the supplied backline amplifier was a SWR SM-900 into an Eden 410XLT. I must say I really liked this combination. Lots of EQ possibilities. A little light on power (I've used an Ampeg SVT-4 Pro with an Eden 410XLT for the last 7 years), but finally an SWR that I liked. I see lots of used SM-900's for sale everywhere. Is anybody using this head anymore? Is there a reason why so many are for sale? Any problems with the SM-900 I should know about? Can any current users or former users chime in about the SM-900 before I go out any buy one? Thanks for any input here!!!!