Headphone booster for MP3 player

摘要

Having recently retired, I often take my iPod and a book, find a quiet spot and listen to music or watch a movie. However, I find that the volume level from the iPod is insufficient for comfortable listening. Is it possible to feed the earphone output of the iPod into the Champ 0.5W amplifier (Silicon Chip, February 1994) and then feed the amplifier's output to a single magnetic earpiece. I realise that this would give a mono output and that I would need two amplifiers for stereo but for the limited usage, mono is quite satisfactory.