So I built a sweet JCM800 2204 last year and it is the sound I was always looking for!! Both channels sound great, but for me, as for many others, the HIGH input is the way to go. But if you need a real clean tone, I mean really clean, by not only rolling down the Volume Knob on your guitar, the LOW input seems to get interesting. Logically, I come to the conclusion that channel switching via an A/B/Y pedal should do the trick. Now I have read some posts about people who claim that this would not work, as the LOW channel overrides the HIGH channel, so if you connect cables to both HIGH and LOW jacks to the A/B/Y pedal, only the LOW channel would work. My question here is about the functionality of A/B/Y pedals: Considering that both channels are connected to the switching pedal; if one of the channels is selected, shouldn't be the other channel "unselected" meaning "disconnected"? And in this case, the *not-active-channel-cable* just be an extension of the input jack pins (ground and hot) ?? If my assumption is correct, then there sould not be an issue with switching as there is no cable/input registered by the amp? TL;DR: Are A/B/Y pedals cutting the input signal physically by just not connecting the guitar output circuit or are they only muting the not-active guitar output (Scenario: 1 Guitar ---> HIGH/LOW channel JCM800 2204) ?