Amazon offers the Sony 2.1-Channel 170-watt Wireless TV Base Speaker with Subwoofer, model no. HT-XT1, for $169.99 with free shipping. That's $9 under our mention from two weeks ago, the lowest total price we've seen, and a current best by $69. It features Bluetooth, NFC, dual down-firing drivers, 3D and 4K pass-through, three HDMI inputs, and one optical input.