The JVM205 is a 2-channel model with 50 W, but has much more to offer.
The most important thing:The sound. Apart from having clean sound (Clean/Crunch-Green-mode), it is typical Marshall and ranges from quaint plexi sounds to modern high-gain. Another sound is a very untypical "american" clean sound, that other britons rarely elicit and sounds really good.
Theory of colours: The Clean / Crunch channel provides 3 variations - green, orange and red (we know it thomann from other Marshall products, right?). At orange it is already plexi-style, at red it will go already in the crunchy 80's sounds).
In Lead channel it goes on - there is Gain in all dimensions - without slush and typical snappy; but if necessary also "creamear" sounds can thomann be generated. There is a programmable 4 way footcontroller, which can control all switching functions. This amp head with 50 W in this price range is practically unbeatable!