ADDA 2408-r: Description Technical specifications Technical tips Brochures & pictures Options: DAD-I/O modules More information: Reviews
Product highlights:
8-channel 24 bit, 96 kHz A/D converter, D/A converter, and D/D sample-rate converter A/D sampling with anti-AID filter for elimination of Alias Intermodulation Distortion 8 Low noise microphone preamplifiers with 0.5 dB / step gain control from -18 to +72dB, phantom power: +48V, and low cut filter Line input level adjustable from +12 dBu to +30 dBu Psycho acoustic dither selectable for A/D and D/D inputs to 16, 18, and 20bit	A/D and D/D with ±180 degree phase inversion, and variable delay setting from 0 to 100ms Sample-rates of 44.1kHz, 48kHz, 88.2kHz and 96 kHz. 8 slots for expansion card Digital interfaces compatible with AES/EBU, S/PDIF, TDIF, ADAT and ProTools Triple digital bus structure, DADBus More digital interfaces to come (compatible with the ADDA 2408 DADBus) Remote controlled via RS 422 or USB
The ADDA 2408-r is an 8 channel high quality remote controlled mic preamp A/D, D/A, sample-rate and format converter. ADDA 2408-r covers applications for music recording with the possibility of placing the converter close to the microphones e.g. on a stage, giving the optimal adaptation to microphones without any loss in long cables. Also ADDA 2408-r is ideal in a machine room environment, due to the powerfull remote control via RS-422. 8 interface slots are available for additional D/A converters and digital interfaces.	Format and sample-rate converter. If a digital input signal is selected as the AD-DD source, the signal is available on all digital outputs (expansion cards) transformed with the dither and sample-rate the chosen. Adjustable delay on AD-DD source input. The delay can be set between 0 and 100 ms. This function allows the user to correct the phase for the relevant channels in a multi microphone set-up. It also enables the user to correct the audio delay time in a video editing system. Dither. Newly developed ultra low noise noise-shaped dithering for 16, 18 or 20 bit recording.
Supreme microphone preamplifier with low cut filter and phase inverse selection. The preamplifier has an equivalent input noise of 130 dB. The level control can set the gain in 0,5 dB steps from -18 to + 72 dB for precise control of the analog input level. This enable the user to scale the microphone level optimally into the 117dB dynamic range provided by the A/D converter.	External synchronisation to AES 11, Word Clock, Super clock or video (PAL, NTSC, SECAM) . The built-in PLL circuit is able to correct for minor variations in the external sync clock signal, giving a very stable adaptation to the external synchronisation signal.
The preamplifier provides a unique combination of analog and digital gain thus providing a 90 dB gain range. The analog gain is set in steps of 3 dB (which is the resolution of the analog input amplifier) and the gain steps in between are adjusted digitally in order to preserve the input noise performance. The AD converter has linearity better than 0.1dB over a dynamic range of more than 100 dB, and the analog preamplifier implements a gain control of additionally -18 to +24 dB. This gives the microphone preamplifier a very superior performance regarding harmonic and intermodulation distortion has at all levels.	Sync alarm. If a digital output is chosen with the DA source button, and the digital input for some reason is out of synchronisation, the red Sync alarm LED will blink. This function is available to secure that the whole recording system is synchronised. The function can be turned off in the system menu. Remote control. The ADDA 2408-r can be fully operated through the DADman PC program. DADman connected to the using an RS 422 or by using an external USB to RS 422 converter.
	Security locks. The power standby circuit can only be turned off by pressing the power button on the front for 3 seconds.