Adorama offers the Mackie Reference Multimedia 4" Monitors, model no. CR4, bundled with the Audio-Technica ATH-M40x Professional Monitor Headphones for $169.99 with free shipping. That's $79 under the lowest total price we could find for these items purchased separately elsewhere, although we saw it for $10 less in October. The speakers feature a 50-watt amplifier, 4" woofers, 3/4" silk-dome tweeters, front-facing headphone jack, and frequency range of 70Hz to 20kHz. The headphones feature a 15Hz to 24kHz frequency response, 40mm drivers with neodymium magnets, and collapsible design.
Update: Specs corrected.