These were built in a limited run back in 2013, this amp being #212 of 250. Players will remark on not only the superb sound quality, but also the attention to details with the craftsmanship. A big issue with the vintage Fliptop amp is the cabinet can be a little rattle-y during use. Thankfully this updated Heritage model has greatly enhanced tolerances on the latches and speaker baffle, to where you achieve a nice and tight bass sound! It also features separate inputs for two different preamp modes - one for 1964 style, and the other for 1966. The standby also features separate bias settings for those same corresponding years.