Purchased from Electromod on 21st December 2015 (receipt supplied) this is a highly regarded balanced headphone amp that will drive pretty much anything. You can do some tube rolling with this amp and as well as the original supplied tubes i'm including a pair of NOS Mullard Amperex Red Label ECC88's (cost me around £55) and the unique Schiit Solid State Tubes (LISST) (cost £85). You too can drive yourself mad trying to hear the difference between the three options! I'm selling on as I've know moved onto headphone amp exotica and no longer require the Schiit. More info at: http://schiit.eu.com/amps/mjolnir-2. These now cost £775 (mine was £729) and with the extras total was around £860. Looking for £600. UK next day delivery £9.95 or collect from West London.