Used Sony PHA-1 Headphone Amplifier for $162

There are many used listings for the Sony PHA-1 Headphone Amplifier at Amazon Warehouse Deals, so this is a listing to keep an eye out for further future discounting if supply gets under price pressure. As of the time of writing, they have multiple “Used – Very Good” listings for $162, and “Used – Like New” for $172. They average 4.2 out of 5 based on 30 customer reviews.