Refurbished Sony PHA-1A portable DAC/amp for $150

There is one unit left as of the time of writing according to the shopping cart. It is the portable Sony PHA-1A headphone DAC/amp going for $150 with free shipping in manufacturer refurbished condition offered by Secondipity through Amazon Warehouse Deals. It ships directly from Secondipity and it is nott Prime eligible. The new condition price is twice that much. It comes in brown box packaging with a 90-day warranty and a 30-day money-back guarantee from Secondipity.