Picked this up today. Looks real cool, build quality looks very good. Powered with no short, relay went off. So far, so good. I'll let it warm a few hours before testing offset. From the dust build up, it clearly sat a long time. Anyone have first hand experience, opinions on the unit? Also, anyone have the service manual? Can't find it myself if it's out there. Looks to potentially have DMM test point, and trim pots for ether bias or mid-point. Would be nice to adjust, if so. Regardless, neat looking unit. No idea on specs either, but looks in the 35-45 range if I was gonna guess.