You can add a tone control to the piezo circuit as shown in the user's guide. You can't add a master tone pot just before the output jack. The Acousti-Phonic doesn't tolerate having anything between the board and the output jack, because it interferes with the sensor that detects whether the patch cord inserted is stereo or mono.
Modified on: Thu, 27 Aug, 2015 at 11:04 AM
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