NeweggFlash offers the Sennheiser HD 558 Over-the-Ear Headphones for $79.95 with free shipping. That's tied with our mention from three weeks ago as the lowest total price we've seen. (They're a current low by $15.) These open-backed circumaural headphones feature a 15Hz to 28kHz frequency response, gold-plated 1/4" jack, and internal sound reflector. Deal ends January 10.

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