I can give you a very good reason *not* to buy a little dot 1+ based on a bad experience I've had with the company.
Being somewhat new to the concept of inexpensive Chinese-manufactured headphone amplifiers, I was pleasantly surprised to see the wide variety of units available. Based on great information from these forums, I narrowed a list down to a few amps, including the Little dot 1+. I chose this amp specifically because I wanted a unit that would drive low impedance AKG K701 headphones.
Finding a place to buy the unit from was problematic. I eventually found my way to suppliers selling the amp on eBay. I did this because I have never ordered directly from any Chinese suppliers and figured that the eBay / PayPal route would at least give me some security.
I ordered a unit from one supplier in Hong Kong. Two weeks after paying for the amp I got a message from the supplier stating that he didn't have any in stock! He refunded my $ via PayPal.
I then proceeded to order another unit from another supplier, and it arrived configured for 240V instead of 120V - the North American standard. I've sent a message to the supplier; no response yet.
In my travel through these forums, I had heard that the owner ?designer of Little Dot was a good fellow who supported the products that he sells. After digging through the forums I contacted "David" by email and asked him if there was an easy way to reconfigure the amp for 120V. I did this because pulling the transformer cover off is moderately more involved than just removing the bottom plate and I didn't want to go through all the effort if there wasn't an easy way of doing this; i.e. no tap on the primary side of the transformer to accept a 120V input.
The owner got back to me and politely told me to stuff it; he wasn't going to give me an ounce of help if the amp wasn't purchased through an "authorized distributor". He wouldn't even make the effort to answer "yes" or "no" to the above question. BTW, at this point he did not even know whom I had bought the amp from. After responding with the names of the two eBay sellers he told me that they were "unauthorized".
Now, there's no doubt that I received the amp from China in an authorized, unopened factory package. This amplifier was obviously made in the same factory that supplies "authorized distributors" with Little dot units and even came with what looked like a warranty card (in Chinese, of course). It was produced by Little dot, plain and simple. So there's obviously a situation here where Little dot amplifiers are sent to many people in China for distribution, likely with full knowledge of the factory, but only certain people in China / Hong Kong are "authorized" distributors. If an amplifier goes to someone in China who isn't "authorized" to sell it, tough luck for the customer - even though I'm sure that Little Dot is profiting from the manufacture of said amp.
I've been in DIY audio for a long time, having started to build amps in the 1970's from "Audio Amateur" magazine articles. I've always found the DIY audio community to be wonderfully helpful. My experience with boutique amp builders has been similar - the people who started Sonic Frontiers in Toronto have helped me through schematics in the early days even when they weren't directly profiting from that activity. Obviously as a manufacturer gets larger, it's difficult to do this.
Still, the owner /?designer of this little dot amplifier would rather spend 5 minutes telling me why he's not going to help me a bit, instead of the 5 seconds it takes to be helpful and answer yes or no. I'm sure he will claim that his "authorized distributors" will get mad if he does this. Quite frankly, I doubt if these distributors would really take offense to someone telling a customer whether or not a little dot amp is reconfigurable between 220V and 120V; most of these people are quite helpful and genuinely care about their customers. I have to say that even though the content of his messages were far from helpful, he was always very polite.
BTW, if anyone out there can answer this question I'd really appreciate it!
many thanks!
). I'm currently using a AV123 X-Head amp with them which is my first dedicated can amp, and while I think it is good, I know I have nothing to compare it to (besides headphone outs on receivers/integrated amps which it does surpass) and overall the sound is a little "thin" or "dry". 
