Rolled in RCA 12SN7s and 6X5s - The more time I spend with the 2A SE, the more appreciate what a fine sounding piece of gear it is. Not sure how the Mapletree might compare with the Decware - but I suggest you A/B this piece with much more expensive stuff, see what you think - I'm enjoying my system every bit as much with this preamp in my system - I don't know, maybe I'm just getting less critical as I simply sit back and enjoy the music.