As one of its daily deals, B&H Photo Video offers the Mackie ProDX4 4-Channel Wireless Digital Mixer for $119.99 with free shipping. That's the lowest price we could find by $50. It uses your smartphone as a display and controller and features Bluetooth, two XLR / 1/4" combo jacks, headphone output, and 16 ReadyFX onboard effects. The Mackie MixerConnect app is available for iOS and Android devices. Deal ends today.