Q I participate in a lot of conference calls and have difficulty understanding some of the other participant's audio. Although I have a substantial high frequency loss, many of the other participants come through loud and clear. However, many other caller's audio sound is "muffled." It's loud enough -just lacking sufficient highs to make it clear. Can you provide a circuit and parts list for an amplifier with an adjustable high frequency boost that I could plug in between my headset and the cordless phone (2.5 mm)? There may be a product out there that will work but I haven't found one.
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