A record player outputs a very low signal that has very little bass and a whole lot of treble. Connecting it to an ordinary amplifier will just produce garbled, low volume sound, and you need a phono input to make it right.
Even if your amplifier has a phono input, you can often improve greatly on that, and this is where the Muffsy Phono Preamp, MC Head Amp and Power Supply enters the equation.
Here's what you will need when you build the Muffsy Phono Kits:
The power supply is needed to produce the +/-15 volts DC power to the phono stage.
The power supply is sold as a kit, with all the necessary components.
The Muffsy Hifi Dual Power Supply gets its power from an AC wall adapter. This adapter is not included with the kit, please see this page for options.
Make sure it is an AC to AC adapter at 15-18 volts, and that it can deliver at least 100 mA (0.1A) of current.
The kit does not come with an enclosure, see this page for options. Apart from that, the kits contain everything else that you need for building a complete phono stage. This includes all cables and connectors, and even soldering wire.