Shure MX153 Earset Headworn Microphone Cocoa 4pin which can provide source selection

which can provide source selection and/or volume control

100K Ohm Potentiometers

and it's also very precise in the very high end

Super-Sonic™ 212 and Super-Sonic 60 speaker enclosures

The Quiklok PSP/125 is a sturdy

Shure MX153 Earset Headworn Microphone Cocoa 4pin which can provide source selectionEarset headworn omnidirectional microphone delivers exceptional speech clarity and enhanced plosive protection with no proximity effect. It features CommShield technology to stop RF interference, 3 color options, 3 windscreens and a protective pouch. The Shure Microflex MX153 provides outstanding clarity in an extremely comfortable over the ear design. This professional subminiature earset microphone is ideal for applications in which improved gain