Any valid opinions - of either unit - might help a future buyer decide. I gave him my opinion of the kit. Of coursed it's biased! Too many people like to provide an opinion of products they don't own. I guess anyone can read the marketing material and look at the specs and come up with reasons to buy, or not. Personally, I prefer to hear from someone who owns the product - good or bad. Then, I can make an informed decision. BTW, I have owned and used numerous Topping products. Many are very nice and decent looking pieces of kit that perform very well. I was just impressed by what the K9 Pro offered and preferred its look. I'm also partial to the AKM sound, so when I heard FiiO was offering a limited quantity run for the first K9 Pro - using the the AK4499 chipset - I jumped on it.