My turntable does not have a built-in pre-amp. Will it work with SpinBase?

Yes. SpinBase has a built-in preamp, to work with turntables without one built in (such as Andover's SpinDeck turntable). Spinbase also works with turntables that have a pre-amp, by connecting them to its Line-Input.

How do you turn on Spinbase?

The front knob turns on the unit and adjusts volume. Rotate the knob clockwise so you hear a "click" to turn the unit on. Adjusting the knob will change the volume level. To shut Spinbase off, rotate the knob counter-clockwise until you hear a "click". The unit is now off.