Im new with the use of the record player since im tired of MP3's. i bought a Numark TTusb turntable connected everything, but the sound is low. i have to crank the volume to the max, and only get low noise. whats the problemo?

A turntable use a magnetic cartridge and its output is only 5 to 10 millivolts.A moving coil cartridge is even lower,.2 to .5 millivolts(thats 1/2000 of a volt)in contrast, a mp3 puts out a 300 to 900 mv signal..so does a CD player. Your turntable does not have enough signal.You need to get an amplifier that has a phono input. Years ago,radio shack used to sell phono preamps that could plug into a tape or cd input.The other option is to buy a used mixer that has a phono input.The mixer output can drive the cd input easily,as the max output from a mixer is 1.5 volts to 2 volts.

Try adjusting the gain level or switching from rca phono to rca line.