Vox AC4 C1-12 August 11, 2020 / Elmo Karjalainen Trying out the small Vox AC4 C1-12. The Vox AC4 C1-12 is a fairly affordable all valve/tube amp. It's compact, but it also has a 12 inch Celestion speaker. Could this be a great practice amp? T... 1 Likes