When I plug my turntable into the auxilliary inputs on my new (receiver, preamp) why is the sound low and muffled?
When using a turntable, it must be plugged into a specific type of input usually labled “phono”. Most new stereos do not offer a “phono” input because not many people still play records. The output of most turntables is very low, like a microphone. The receiver or amplifier must boost this signal to the correct level. When records are made, an equalization curve is applied to the audio being cut onto the vinyl. The receiver or amplifier must compensate for this equalization. This is all handled by the “phono stage” inside the stereo. The set of standards to which phono inputs must adhere to is known as “RIAA” (Record Industry Association of America). The “auxillary”, “CD” or “tape” inputs on an amplifier or receiver do not provide the necessary amplification and equalization. Likewise, if a CD or other similar device is plugged into the “phono” input it will sound distorted. After market phono ‘preamps’ are available from most stereo stores.
