Sterling 4-Channel Professional Headphone Amplifier for $50

It’s a headphone amplifier, probably not the type you see buzzing around at Headfi and Zeos Fi and such, but it is the current Musician’s Friend daily deal, the new condition Sterling Audio 4-Channel Professional Headphone Amplifier offered for $50 with free US shipping [I think]… Offer ends Thursday at 8am eastern or earlier if sold out…