When you receive your new RedPlate Amp, it is highly recommended that you spend some time with the amp and get to know what all the controls and switches do.
Tone controls are self-explanatory, but, the volume for each channel, gains in some channels, and levels in some channels all interact and change the sound of your amp. For example, on an amp that has cascading channels, like a BlackVerb or BluesMachine, the level that you set the first volume of the clean channel dictates how the entire amp will sound. If the volume control is too low, there will never be enough signal at the drive channel to get any gain out of the amp. We highly recommend you start with the first volume around 10-12 o'clock on a BlackVerb and 12-1 o'clock on the gain and volume of the clean channel on a BluesMachine.
On an amp like the BlackLine, the clean and lead channels are separate, but the lead channel is still a cascaded channel from an internal circuit feeding the drive section. The gain, drive, and level controls all interact giving different tonal characteristics to the drive section. Gain is basically the amount of guitar signal getting in to the lead channel. If you run gain and drive high and level low, the sound will be very "fusionesque" with a smooth drive and lots of compression. If you back off the gain and drive to about noon and bring the level up to 10-12 o'clock, the drive channel will "open up" and be more dynamic with less compression.
So, give the knobs a spin, and try different settings. There is A LOT of tone in a RedPlate Amp!