Here is what you need to do:
In the manual - Page 9.
The preset level in shift mode. shift then turn the tubetone knob clockwise. It adjusts the preset and memory levels. It will get louder. And of course a 4 ohm load via another cabinet or 4 ohm cab will let you take full advantage of what the 450 has on tap. TC will stand behind 3 of there 8 ohm cabs run with this too.
In the manual - Page 9.
The preset level in shift mode. shift then turn the tubetone knob clockwise. It adjusts the preset and memory levels. It will get louder. And of course a 4 ohm load via another cabinet or 4 ohm cab will let you take full advantage of what the 450 has on tap. TC will stand behind 3 of there 8 ohm cabs run with this too.

