On the bat 3 series, the phono stage is optional. I would open the case and try to see if there is a card that say's phono that appears to be an add-on. You should look in your manual or somewhere on the preamp (even on the circuit board) to see if there is a setting for MM (moving magnet) or MC (Moving coil). Check what kind of cartridge your record player and determine if the cartridge is an MM or an MC. The cartridge manufacturer, or a vendor of that cartidge should be able to help you. MM and MC have different output levels. Some phono stages auto detect this. If you don't see these things, you should call BAT technical support and ask for help. You can damage the tweeters in your speakers if you have too high of a cartridge output with a powerful gain stage.