I have the 5-50 as well and noticed the same thing about the clean channel vollume. You have to really turn it up and I have found that keeping the master at 3 o'clock and use the gain for to get the desired volume. In fact if you switch it to crunch channel you can use it as an alternative clean using the same settings and to me it is a far better clean sound and a lot more punch to it. I usually use the crunch as the clean channel.