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SOUND DEVICES MICROPHONE PREAMPLIFIERS

Battery powered microphone preamplifiers for high performance applications in broadcast, film production and other applications requiring full professional facilities.

MP-1 Microphone Preamplifier

The MP-1 is a portable, single channel, battery powered microphone preamplifier with 20Hz-50kHz bandwidth and better than 120 dB dynamic range. Features include 48 volt and 12 volt phantom power generation, high-pass filter, transformer-balanced input and output, and a robust metal housing with protective end rails.

An extended-range peak limiter makes the unit virtually 'unclippable'. A high-current line output driver enables this unit to drive very long cable runs. Powered by 2 AA size batteries, with a power LED that also gives low power warning.

Technical Specification:

Mic input:XLR 3-pin female, transformer balanced (Lundahl)
Line output:XLR 3-pin male, transformer balanced
Gain:0dB to 66dB, switch selectable in 11 steps
Response:20Hz-22kHz +0.1,-0.5dB; -1dB at 50kHz (ref. 1kHz, 150R source)
Power source:2 AA size batteries (note that there is no DC input option)
Battery life:24 hours typical (phantom power off)
Dimensions:49 x 95 x 166 (h x w x d) mm
Weight:0.64kg

MM-1 Microphone Preamplifier with Headphone Monitoring

The MM-1 combines two essential production functions - microphone preamplification and headphone monitoring - into one compact portable product. The microphone preamplifier section has 20Hz-50kHz bandwidth and better than 120 dB dynamic range. Features include 48V and 12V phantom plus 12V AB(T) power generation, high-pass filter, and transformer-balanced input and output. An extended-range peak limiter makes the unit virtually 'unclippable'. A high-current line output driver enables this unit to drive very long cable runs.

The headphone monitor accepts an external, balanced, line-level input, such as talkback or cue programme, which has a separate level adjustment and can be mixed with a monitor feed of the preamplifier output to give a composite headphone output.

Recessed switches (located under the belt clip) permit selection of external source monitoring without mic preamp signal to both ears, or split feed. It is housed in a robust metal case with protective end rails and detachable belt clip. Powered by 2 AA size batteries or external 5-17V DC supply, with a power LED that also gives low power warning.

Technical Specification:

Mic input:XLR 3-pin female, transformer balanced (Lundahl)
Line output:XLR 3-pin male, transformer balanced
Gain:0dB to 66dB, switch selectable in 11 steps
Response:20Hz-22kHz +0.1, -0.5dB; -1dB at 50kHz (ref. 1kHz, 150R source)
Line input (monitor):3-pole A-gauge jack, balanced
Power source:2 AA size batteries or 5-17V DC (2.1mm threaded jack)
Dimensions:43 x 94 x 140 (h x w x d) mm
Weight:0.56kg

Included accessories: Mating DC power connector, four rubber feet.

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