As one of its daily deals, Musician's Friend offers the Tascam USB 4-Channel Audio / MIDI Interface, model no. US-144MKII, for $49.99 with free shipping. (Click "Stupid Deal of the Day" to see this.) That's the lowest total price we could find by $50. It features midi input, midi output, two XLR mic inputs, stereo digital audio input and output, switchable phantom power, and separate controls for output level and headphones volume. Deal ends today.