<BLOCKQUOTE><font size="-1">quote:</font><HR> Alternatively, I could go with a regular headphone amp (1-input, 1-output) and have a 4-input, 1-output 3.5mm switch box ...
The 3.5mm phone jack is a well-established standard in the audio industry and continues to get strong support from users in the market. Originally invented in the 19 th century for telephone switch ...