Waaa412 Av Portable [portable]

If you require system-wide playback in native legacy applications, install the K-Lite Codec Pack (Mega Edition) and ensure legacy VFW (Video for Windows) and ACM filters are checked during setup. Hardware Maintenance for Portable AV Units

is a model number for a specific brand, or if you were looking for information on a different type of "portable AV" device?

: Per-channel -20dB pad, 48V phantom power, polarity inversion, and LED metering.