The Melody 300b is a nice amplifier, but somehow has a lifeless sound to it, as do a number of those amplifiers built in China which all have in common nice shiny looks, be it automotive black or shiny chrome. Unfortunately, many of those brands sound the same too.
Past the usual and expected sound characteristics of the tubes themselves, there is unfortunately not much to get excited about. Where's the excitement ?
If I had to choose an eastern-built product, I would tend to go with tried-and-true 300-B Cayin, been around for ages and provides honest sound for the dollar, with decent resale value in case you don't like it. I heard this amp on numerous occasions, and it is quite impressive.