The Forssell Technologies MADA-2 is a high quality, bare-bones, two channel Analog to Digital Converter (ADC) and Digital to Analog Converter (DAC) housed in a 1U rack.
The MADA-2 is designed for the most demanding applications, where capturing musical performances with accuracy and honesty is required.
ADC Section Sample rates from 44.1k to 192k Fs are selected with a single front panel switch and with LED indicators showing the selected sample rate. Word Clock sync is also selected using the sample rate selection switch. The ADC section of the MADA-2 can operate with word clock frequencies from 32k to 200k as well as vari-speed.
Digital "clipping" is indicated with a single front panel LED that latches on until the "reset" switch is pressed. Pressing the reset switch only effect the illumination of the "Clipping" LED and does not reset the ADC itself.
The MADC-2 analog circuitry features an all Class A discrete JFET with no IC opamps used in the signal path. The analog inputs use high quality XLR connectors. The digital outputs provided are AES3 (XLR), SPDIF (RCA), and Word Clock output (BNC) are provided. An additional Word Clock output is available as an option. The MADC-2 digital output word length is fixed at 24 bits.
The DAC section of the MADA-2 accepts digital inputs with sample rates from 44.1k to 192k Fs. AES3 (AES/EBU) 110 ohm (XLR) and SPDIF 75 ohm (RCA) are provided on the MADA-2. Input selection is via a front panel push button switch with LED indicators showing which input is selected. Other front panel LED indicators show input fault and SCR lock status.
Sample Rates available : 44.1k, 48k, 88.2k, 96k, 176.4k and 192k
Level Calibration : 0 dBu Input = -18 dBFs
(Other calibration levels available on request.)
Analog Input Impedance = greater than 10k ohm balanced
Maximum analog input level is a function level calibration (no analog clipping). AES3 (XLR) digital output impedance = 110 ohm balanced floating
SPDIF (RCA) digital output impedance = 75 ohm balanced floating
WC output = +5V (TTL) unterminated. Requires 75 ohm load termination at load.
ADC Latency (Input to Output group delay):
44.1k: 1.6 ms
48k: 1.48 ms
88.2k: 967 us
96k: 895 us
176k: 660 us
192k: 605 us