If you're looking to buy a turntable with an Amp, you should know the features of the built-in preamp and the amp. Preamps are used for the audio signal that is sent from the turntable to the speakers. Turntables use two sets of RCA cables to transmit the signal from the turntable to the speakers and the preamp to the speakers.
Many new turntables have a built-in preamp, but not all self-contained turntables do. Even the cheapest ones may not have one, so make sure you check that it has one
before you purchase it. If it does, then it's probably a high-quality unit. If it doesn't, you'll have to pay more money for a separate preamp.
Preamps are necessary for the proper reproduction of vinyl records. Essentially, the preamps work by converting the PHONO signal to a line-level signal. Some turntables have an auxiliary input for an external preamp system. Some turntables come with built-in phono preamps. If the turntable has one, it should have a switch to select between a phono and line signal.
Moreover, if you're looking for a turntable with an internal phono preamp, you can simply check the label. The label should read 'PHONO' or 'Tape Out', while a ground screw is usually an indication of a preamp's presence. The internal phono stage in newer turntables can be switched off or disabled by the owner.
