Actually, if the waffer valve is stuck open on the preamp when you connect the tuner via the record output jacks of the receiver, you might burn out the muffler bearings. If that happens, say goodbye to the permeated substances inside the thingamabob or what-cha-majigger. You'll never get them to operate properly after that point unless you install new skyhooks. This can be pretty expensive, especially if you find someone that knows what you are talking about : ) Sean
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