Mark, the M22s are average in sensitivity and can provide all the volume that's safe to hear with typical receivers anywhere in the 100 watt range. In my own use I've measured a peak reading of 106dB, when listening to my most dynamic classical CDs at a quite loud average level(about 85dB), higher than I generally use. More typically, with levels about 10dB below that, both the M22s and the receivers can handle the material with room to spare.

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Enjoy the music, not the equipment.