Hi,   Just a heads up . . . . BLOX M2C and ANV3se are back in stock. I don't know how long they'll be there, but I know at the time of this writing both are still available.   Cheers, Mike 

Hi,   I recently purchased a used pair of older Yuin PK2's. As they were in need of repair, I replaced the plug with a new one. I immediately noticed that these were different from the newer models I had purchased in the recent past, as they had the double wires leading to the plug, whereas...