I purchased a Crack kit a couple months ago to push my HD650s and was immediately sidetracked by other projects. In the meantime, I have upgraded to a pair of LCD-2, so I no longer have use for an OTL amp. I'm selling the kit at a discounted price ($47 less than I paid). In addition to the discount, the purchaser will receive the amp in a few days, instead of being put on a 2-month waiting list by Bottlehead. The kit is in perfect shape , and most of it hasn't even been unpackaged. I will also include the receipt from Bottlehead.