Today only, until 9 am ET, Amazon offers the Audio-Technica Professional Studio Headphones in Red, model no. ATH-M50, for $99.99 with free shipping. Although we saw it for a buck less in red last week, that's the lowest price we could find by $5, and most merchants charge $149. These collapsible headphones feature a 15Hz to 28kHz frequency range, 45mm neodymium drivers, swivel earcups, a padded headband, and straight cord.