 This is the HD Club 40 Mark II Black and Blue Special Edition from Blackstar. The Black and Blue Special Edition comes with a sleek blue and cream finish, and all the popular features found on the standard Club 40 Mark II. However, the Black and Blue boasts a pair of Tad 6L6 Black Plate Valves, widely considered the holy grail of vacuum tubes since the golden age of tube manufacturing. With authentic construction and vintage tone, we're proud to bring back these sought-after valves. Accompanying the Black plates is a Celestian Vintage 30, the most revered of all Celestian speakers. The Vintage 30 features enormously detailed and complex overtones, a warm low end, a famously rich vocal mid-range, and a beautifully detailed top end. HD Club 40 Black and Blue, available now.