As one of its daily deals, Woot offers the Audio-Technica ATH-M50x Professional Studio Monitor Headphones in Black bundled with a Bluetooth Adapter and Amplifier for $149.99 plus $5 for shipping. That's $34 under the lowest total price we could find for these items purchased separately elsewhere. (Most stores charge around $169 for the headphones alone, and the adapter costs about $50 elsewhere.) The headphones feature a 15Hz to 28kHz frequency response, 45mm neodymium drivers, and three detachable cables. The Bluetooth adapter features a 5-hour battery life. Deal ends today.