I almost got the DIY Buffalo 32S/headphone amp that came up on Audiogon yesterday. In fact I paid for it, however, had to cancel the transaction once I learned that the unit had no bottom panel! WTF. Wouldn't you disclose that little detail in the ad? The only reason I came to learn about it before it was shipped out to me was because I asked for a pic of the insides of the unit. I knew the seller from previous transactions and he has always been a straight-shooter, nice guy. He was really fast with the refund and it came off as a sincere omission, honestly. The interior had a very clean layout for sure.
Unfortunately, an open bottom showing the guts, is not what you want for international shipping. A sure red flag, to have wires and transformers showing during inspection @ airports. Also, risk of damage is pretty high.
Even though I am not familiar with the buffalo 32S configuration, I was really looking forward trying it. looked like a nice balanced headphone amp...