Hi, The Fender Deville (like all modern 2-channel guitar amps) has been designed so channel 1 is the clean channel and channel 2 is the overdrive or distorted channel. Again on most modern guitar amps you will find 2 input jacks one jack is designed for standard or non active guitars and the other for active guitars, nothing to do with channel 1 or 2. If you plug a standard guitar into say input jack 1, it will sound louder than input jack 2, this is because input 2 will attenuate the input signal by half to accommodate an active guitar which give double the output.