How can I get mp3 player's output level to match the level RCA input (for use in a jukebox)?
If "phone" means an input designed to connect a turntable to, you do not want to connect anything but a plate at the entrance, because the most likely the RIAA is equally exaggerated bass and treble a bit and unnatural sound for anything other than a vinyl record. If you have a regular line input is not labeled as "Phono" then you need a small preamp to boost the signal of MP3 player. Something like this should do the trick (I own this one and use it to convert old vinyl and cassettes to CD and it works fine) http://www.amazon.com/TC-740A-Variable-Instrument-Phono-Attenuator/dp / tech-data/B000J2V9OA/ref = De_a_smtd CTP makes a whole line of these so you may want to look to others. http://www.amazon.com/s/ref=nb_ss?url=search-alias% 3Delectronics & field-keywords = CTP
