From a guitarist point of view, in a class A amplifier each of the amplifiers power tubes are working at maximum output the whole time. This makes them run ‘HOT’ and generates a very natural level of smooth tube compression.
Higher powers are obtainable by using multiple valves in parallel – in this case 4 x EL84’s are run in Single ended mode and then paralleled up to give 20 watts RMS of Parallel Single Ended tone.
On-board studio quality reverb. Reverb gives you a sense of the space that you are in. A dry guitar signal can sound a little dull. Adding the right about of reverb provides the guitar signal with ambience and brings it to life.
FX loops are important as they allow you to add effects to the signal path in a specific place between the pre-amp and the output section on an amplifier. This is where FX loops are important as it allows you to put time-based FX after the distorted pre-amp section. For example, delayed distortion sounds different to distorted delay – try it.