The DA305A is a low cost multi-function digital audio processing distribution amplifier.The most common use of the DA305A is to adjust the level of the AES audio stream in the digital domain using DSP technology.The DA305A can be configured to operate as a gain trim (-15 to +15dB) or as an audio volume control device (digital silence to +12dB).

The DA305A accepts two AES audio inputs with sample rates ranging from 22kHz to 96kHz The second input is typically used as a reference input for the sample rate converter on the main channel. The second input can be connected directly to the termination of the cards, or it can be connected to the internal reference bus of the MF100 frame. Alternatively, the second input can be treated as an audio channel for mix or dual level matching applications.

The DA305A has eight output splits which are grouped into two groups of four (Out1 and Out2). Each output group can be jumpered to deliver different combinations of the input signals including:
• Input 1 or 2, stereo
• Input 1 or 2, left plus right
• Input 1 or 2, left minus right
• Input 1 and 2, stereo mix
• Internal Test tone
• Delayed audio (20 seconds max)

Multi-turn potentiometers located on the front edge of the card provide level control of the audio signal(s). Additionally, the DA305A can provide remote gain capabilities allowing audio level control from an external potentiometer or via its RS485 serial port.The programmability of the DSP component on the DA305 card enables various audio related functions to be addressed, ie time delay, equalization, automatic gain control, etc. Please contact the factory for your specific requirements.