A:AnswerI don't know the cartridge number it comes with, it's white. But there is only one different one available, it's an elliptical. I switched to this and it greatly improved the sound quality. The replacement # is ATN2600LE. Costs about $50
A:AnswerYou could, by plugging a set of wired headphones into the 3.5 mm stereo Analog Out jack on the back of the turntable, but the volume would be at a fixed level and only moderately loud as there is no power amplifier inside the turntable (only a phono preamplifier) and there is no volume level adjustment on the turntable. It would be better to install a headphone amplifier between the turntable and the wired headphones or go with the Bluetooth version of the turntable, the AT-LP60XBT- and use a set of wireless (Bluetooth) headphones instead.
A:AnswerThis is not enough information; we need to know the exact model Shockwafe that you have. It will need to have a Line Level analog audio input on it of some sort, it does not have to be a PHONO input, an AUX In or Line In input will work.