This the new LM741 PREAMP  from Mosky Audio in their new M series.

All at a price within reach of any player.

Based on DOD250,DOD YJM308,MXR Distortion-circuit.

Effect Type: Overdrive /Preamp                                                   

Control: Level and Gain                                                        

Three modes Toggle: MXR/D250/JYM308                                                                                          

4-mode selection knob: Si,Ge,Soft,Boost                                                                                                                                                              

Power Supply : DC9V 100mA -center is negative 

Dimension(L*W*H):11.5*6.5*5cm

Only a few with fast US ship from Texas.

Thanks from The Earth City Sound Company.