This is an earlier Tone King model, back from the early 2000's. This was when famed builder Mark Bartel was still a part of the company, whom is responsible for the magic behind Tone King's innovative design. Compared to the newer era amps this Meteor 20 has a more raw character, with a noticeably more vintage sound and feel. Just like the Imperial amps it has a Rhythm & Lead Channel, but also features reverb and a great sounding tremolo. This might be the slowest, deepest tremolo you've ever heard, and sounds very unique!
It should also be noted this amp is in fabulous condition, with minimal signs of previous wear.