The Datavideo AD - 300 Pro is a top - notch audio delay device designed to meet the high - end needs of professional audio production. It comes with a wide array of input and output interfaces, including 3 XLR balanced stereo inputs, 2 RCA unbalanced stereo inputs, and offers two channels of XLR and RCA outputs, along with a 3.5mm stereo headphone output. This device has a remarkable 3000 ms audio delay range, enabling individual millisecond - level adjustments for each input to achieve perfect sound and video synchronization. The built - in mixing function allows you to select any five input sources and combine them into a single output channel, and you can add a Test Tone for volume correction. The equalizer can adjust each channel from 125Hz to 16K Hz in 8 frequency ranges, with ± 10 dB adjustment for various tone effects. The compressor reduces the high - volume signal level and maintains the low - volume signal, with a 100:1 compression ratio and adjustable Attack time from 50 to 500msec. The limiter controls the maximum volume of the track, with a Threshold range from +24dBu to - 6dBu and an adjustable Attack time. The expander expands the dynamic range of the sound. The gate mutes audio below the set threshold, useful for removing unwanted noise. The audio filter can cut out specific frequency groups. It also has a built - in balanced/unbalanced audio conversion function to ensure proper sound output. The device supports XLR mic in with +48V phantom power and can switch between microphone and audio line inputs. It has a 2” LCD screen for audio indication, a 48 KHz audio sample rate, and is rack - mountable with the RMK - 1 Rackmount Kit. It runs on DC 12V 13.8W, measures 205 x 235 x 45 mm, weighs 1.3 kg, and operates in a temperature range of 0 - 40 °C. The package includes 1 AD - 300 product and 1 AD Switch DC 12V.
Using the Datavideo AD - 300 Pro is easy. First, connect your audio sources to the appropriate input interfaces, like XLR or RCA. You can choose whether to use microphone or audio line input and switch the +48V phantom power for XLR mics if needed. To adjust the audio delay, simply set the milliseconds for each input to sync your sound and video. When it comes to mixing, pick the input sources you want to combine into the output channel and add a Test Tone for volume fine - tuning. For tone adjustment, use the equalizer to set specific frequency ranges and change the volume for each range. To control the audio dynamics, use the compressor, limiter, and expander functions. The gate can be used to get rid of unwanted noise. And the audio filter helps in removing specific frequency groups. Remember to handle the device gently and avoid exposing it to extreme temperatures outside the 0 - 40 °C range. Keep it clean by using a soft, dry cloth. If you're going to mount it on a rack, use the RMK - 1 Rackmount Kit. Also, always use the provided AD Switch DC 12V for power to ensure stable operation.
