Check the listing for details. Millennia HV-3D/8 8-channel Microphone Preamp. Condition: New. Listed at 4380.00 USD. Eight channels of audiophile sound in the studio or on location!The Millennia HV-3D is an 8-channel version of the very successful and popular HV-3C stereo preamp. The HV-3D combines multiple channels to minimize redundant mechanical and electrical parts. This is a tool you can build a career around: it will remain valuable and useful no matter how far your sonic explorations take you. Acquiring an HV-3D is a step off the upgrade treadmill, a step that will ultimately save you much more than your initial investment. For pristine audio capture on location and in the studio, Millennia's HV-3D is a great option!Open, Transparent Sound Mic preamplifiers magnify the input as much as 1000:1. There's no "Undo" after this point. Coloration or distortion become part of the signal.