Antique Sound Lab MG-Head OTL 32 vacuum tube preamp and headphone amp. good condition works great. comes with manual and remote. remote only works with mute button nothing else on remote does anything unless it does on headphones, dont have headphones anymore but tested headphone years ago so no idea on headphone amp. has been in storage. Taken out to have it cleaned and serviced. has various marks nothing major. only thing for sale in picture is preamp. comes with adapters to use 6sn7 also it uses 12au7 without adapters normal tubes used in preamp. sounds great with any of the listed preamp tubes. has nos us made 5ar4 but can use other tubes as well. the 4 el84 us made nos test new and all tubes matched on maxi matcher within 1%. tube dampers are included, with send with 1 pair 12au7, 1 pair 6sn7, all cryoed tubes. no cables included. will provide stock ac cord if needed, tubes will be shipped in separate box, so 2 boxes will be shipped. so having other audiophiles over for listening test we all preferred the 6sn7 but it has more gain so its louder but clear. I would say 6sn7 is better if even lower cost ones compared to expensive 12au7s which I have all to try. The group prefered the 6sn7 in the preamp but I am ok with either, but 6sn7s are cheaper.