I don't know what you all this but I posted a thread months ago and now I can't find it cuz I don't know what it's called. I want a splitter or coupler adaptor or whatever you call it... two 1/4 inch female on one end and 1/4 inch male on the other.
I have one but it's junk... very loose fitting In's. You can get these at Radio Shack. In that old thread, someone posted a pic and it looks like what I have. I would think there would be something that's high quality SOMEwhere.
This is for... on back of my keyboard, mic input is 1/4" input. With a splitter or Y connector, I can also put my acoustic guitar in there.
Of course, I can use a mixer and I do, but the signal is not reliable due to loose connection. If I can get a decent enough signal, that means I wouldn't have to mess with a mixer and could just use the Yamaha psr2000 onboard mixer. Although, it would be mixed in with the mic. But my guitar has electronics , as well. I don't know if this will work good enough but I think it might.
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Bill
Yamaha PSR2000
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Bill