Yes it is the transistor.
P Yes there a lot of power.
Yes there is a rglage.

NO! This is not a toy!

UTILIZATION

Simpler than a you die!
A volume that's it.
You can open the box the amp to qualify rendering.

The rest is done with the knobs and pickups of the guitar and and and ... fingers!

SOUNDS

For the Blues: OK
To get good sound in my room: OK

OVERALL OPINION

If you need a little amp just for the house, either one.