The Forssell Technologies MADA-2
The Forssell Technologies MADA-2 is an extremely high quality,
bare-bones, two channel Analog to Digital Converter (ADC) and Digital
to Analog Converter (DAC) housed in a 1U rack mount enclosure. 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 ADC 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 ADC 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