MXR M235 Smart Gate Pro  

When I first heard about the M-235 I was very excited, I have tried several devices to control the noise of my high gain 5150 amp when not playing. The instruction paper, not a manual, but a 3"x6" piece of paper does not give you the complete information on certain aspects of the M-235 like what does the "sync" button do ? How do the two channels operate. I spent two weeks trying to get answers from Dunlop but they wont let you talk to the R&D department that know how it works. I have found out on my own you cannot use the two channels seperatly and also "sync" does not link the two channels together for stereo operation. I have sent emails and called many times and they acknowledge that they did get my messages but failed to return the calls and emails because they cant get any answers from the R&D people. You are much better off buying two seperate M-135`s. I have played for over 35 years and have seen customer service evaporate into thin air !