Discontinued
System 1000 MDA-101PA
MDA-101PA - Mic-Pre Power DA™
Discontinued Product
The MDA-101 combines an ultra-low-noise, variable gain microphone preamp with a DA. It has one input and 10 line level outputs. It provides the ideal method of microphone signal distribution, because all signals are distributed at line level. Since input clip is +29 dBu at minimum gain, the card is a good choice for line level distribution applications that occasionally require significant gain. With line level distribution, long runs are far less susceptible to noise pickup from lighting or other sources, and line level inputs are all that is needed at the receive end. Plug on accessory daughterboards, such as the RGC-04 remote gain control, add significant versatility to the DA. Join the BBC, NBC-TV, NPR, and the Boston Symphony in choosing the finest mic-pre DAs!
The MDA-101PA-ra module is a MDA-101PA with remotely controlled attenuator.
Features
- 1 dB noise figure, -130 dBu EIN
- Gain range from -2 to +73 dB (with pad)
- CMRR > 100 dB to 2 kHz, 75 dB @ 20 kHz
- Bandwidth = 160 kHz, 20 kHz Ø = -8°
- THD < 0.001% @ 2 kHz, 0.0035% @ 20 kHz
- Virtually no intermodulation distortion
- 3 types of mic power; +48 & +12 V phantom, AB/T
- Common mode input filter for RF immunity
- Ten 60 ohm balanced outputs
- Remote input pad option
- Optional daughterboards available
| MDA-101PA | Discontinued |
| MDA-101PA-ra | Discontinued |
| FSG-01 | Discontinued |
THD+N and Phase vs. Freq Performance Graph
The
FSG-01 is a First Stage Gain control daughterboard for the MDA-101, a
System 1000 microphone preamplifier - line level DA. The FSG-01 performs
gain change directly at the input stage of the microphone preamp thereby
optimizing the noise and distortion performance of the preamp. By placing the
actual gain change at the first stage of a microphone preamplifier, the noise
figure and distortion performance of the preamp is maintained. VCA gain control
is often placed in the third stage of a preamp, however this is a compromise to
overall distortion and noise performance as well as making first stage clip
condition correction impossible without a remote input attenuator.
Interface PS-12
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The PS-12 is a ±15 VDC, 700 mA, 110/220 V power supply that powers up to six IFAs. Power output is provided using easy-to-obtain RJ11 modular connectors. This makes creating an extension simple and inexpensive. The center two pins on the RJ11 are ground, thereby protecting against a mistaken telephone plug-in. Features
Price: $299.00
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Interface PS-1
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The PS-1 is a ±16 VDC, 300 mA wall mount power supply for powering the IFA and other products. By physically separating the power supply from the audio electronics, EMI that is generated from the transformer and the in-rush currents at the filter capacitors is prevented from contaminating the audio signal. Made in China. Interface Jr. Audio DirectorProduct Overview Photo:
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Jr. Audio Director - Rear View
The Jr. Audio Director™ supplies output modes of Stereo, Mono, Left, Right and Stereo Reverse. Additionally, right channel polarity control is provided for mono monitoring. The rack mountable chassis includes LEDs to indicate the operating mode. Installation is easy using the plug-in Eurostyle barrier strip. Note: PS-1 power supply included.
IFA-9Product Overview Photo:
IFA-11Product Overview Photo:
IFA-10Product Overview Photo:
H1Product Overview Photo:
 H1 OverviewThe H1 is an ultra-high resolution stereo headphone amplifier with current boosted outputs that will drive headphones with impedances down to 60 ohm. Inside the H1 is Benchmark's signature headphone amplifier module, the HPA-2™. The sonic purity of the HPA-2™ fulfills even the most demanding headphone applications. The spectacularly clean performance offers true state-of-the-art listening with today's ultra-high performance headphones. Specs
For more specifications, please download the H1 Product Manual. Power Supply OptionsPS-1The PS-1, a ±16 VDC, 300 mA wall mount power supply, is included with every H1. By physically separating the power supply from the audio electronics, EMI (Electromagnetic Interference) generated from the transformer in-rush currents at the filter capacitors is prevented from contaminating the audio signal. PS-12The PS-12 (pictured below) is a ±15 VDC, 700 mA, 110/220 Volt power supply that powers up to two H1s Power output is provided using easy-to-obtain RJ11 modular connectors. This makes creating an extension simple and inexpensive. The center two pins on the RJ11 are ground, thereby protecting against a mistaken telephone plug-in. A 1 RU Rack-Mount panel accomodates 3 H1s or PS-12s 
(click images to enlarge)
Rear view: 
Rack-Mount Panel: 
System 1000 Interconnect AccessoriesProduct Overview Photo:
 Build-out Panel BP-100 build-out panels are custom 2 RU rack mount QCP panels by ADC, with added build-out resistor boards. Various combinations of inputs and outputs may be configured with these QCP panels. Used in combination with the MF-300/302MLX card frames and corresponding pre-connectorized interconnect cables, the BP-100 QCP panels make for a very fast installation. 
SIB-100 - Discontinued Product Interconnect Module The SIB-70 Rear Interconnect Module provides a fast and
convenient way to wire to the
MF-300 card frame. All
audio connections can be made to the SIB-70 outside the equipment
rack. Once wired, simply plug it into the connectors on the back of the
MF-300 frame. The SIB-70R Rear Interconnect Module is an SIB-70 with a remotely controlled polarity inversion relay. System 1000 DA-102DMProduct Overview Photo:
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