Little Bear T10-Pro 12AX7B Tube valve Phono Turntable RIAA Preamp preamplifier Ver2.5 for MM (Moving-MaganeticCartridge) turntable only.not support MC truntable Acrylic box version, Weight:1.65KG, Size:256*190*70mm(10.07*7.48*2.75inch) PCB is finished and all electronic components are already soldered. The panel and transformer and case, you will need assemble by yourself to complete the unit - easy work! after you can using it. Also with 110V and 220V version for choice. i will sent correct version to you. TOP NOTIC:For solve hum problems that some buyer respond to us,follow is the suggesion:.when you listening the music, use your finger touch this GND point. if the hum come to lower. that's mean your T10 not connect to really ground. please re-connect it to really ground.that's important