Audient ASP800 8-Channel Microphone Preamplifier Rackmount with Box. The Audient ASP800 is an audio powerhouse designed to transform your sessions into world-class recordings, making it the perfect addition to your audio interface. ASP800 provides 8 channels of Audient's renowned console mic preamps, class-leading Burr-Brown converter technology, two JFET DI's, and two Retro channels with revolutionary tone control. Just plug in your mics, guitars, keyboards, and drum machines and you're ready to go, so get creative and start thinking big!