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Originally Posted by smhertzog
A 50 deg. variation in thermal cutoff has to make a difference.:032:
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Yeah, I'm sure it does. One thing the MM has going for it is the fact that the heatsink is directly on the FETs, while the Quark has those pads. While supposedly thermally conductive, they do have some thermal resistance. It sounds like Quark derates the cutoff to allow for this. Ever since I took my 125B apart and got rid of those thermal pads and used epoxy, the heatsink gets hot quicker and cools quicker indicating better thermal efficiency. Overall temps are less too. So it acts more like the MM heatsink. Since then, I haven't it get anywhere close to too hot to touch.