Working with our miniature microphones, the MP1 Microphone Preamplifier serves three vital purposes:
- It boosts the signal from the microphones
- It allows you to control the gain, so you can record both loud and quiet sounds without
noise
or
distortion
- It powers the microphones
The preamplifier boosts the signal straight after it leaves the microphones, reducing its susceptibility to interference.
The two slide switches on the left provide gain control in 10dB steps. The scale indicates the maximum sound pressure level at the microphone before clipping occurs in the preamp. If the preamp clips the clipping light turns on indicating that you need to change range.
Lindos MP1 Microphone Preamp
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Lindos MP1 Microphone Preamp (underside)
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Lindos MP1 Microphone Preamp (side view)
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Lindos MP1 Microphone Preamp (front view)
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Lindos MP1 Microphone (rear view)
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The microphone inputs on cameras, computers and other devices usually provide 3V power through a load resistor which compromises performance. Our preamp feeds 5V power and the load resistor is placed inside the microphones. This allows high-level and distortion performance to be optimised for each individual mic. It also allows for the precision calibration of each microphone. This ensures that every mic is well matched to every other mic, which is important for stereo recording.
The output from the preamplifier is balanced and at a professional line level (+18dBu max - EBU recommendation) ensuring a clean and robust signal into your audio device.
Features
- Stereo microphone inputs
- Balanced line-level output on a single UniSon connector (fewer cables)
- Independent left- and right-channel gain selection (+40dB, +30dB,
+20dB)
- Easy-to-access PP3 battery compartment (battery included)
- External power from PSU or via the D-type connector
- Clear three-stage battery indication
- Overload (or clip) indicator on each channel
- Fixing points for 1/4" hot shoe adapter, stand and belt clips
- Tactile switches
- Solid aluminium case
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Specification |
| Size | | 116 x 60 x 35mm |
| Power |
- Via PP3 battery - included (35hrs use - Alkaline battery)
- Via External 12V power supply (6-14V) (2.1mm power jack)
- Via UniSon connector (6-9v)
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| Inputs | 2 x 3.5mm jack, 5V power on tip, signal on ring |
| Input Impedance | 100k, use external load resistor (typically 1k) when connecting other manufacturers' microphones |
| Maximum Input Level | -12dBu (middle gain setting) |
| Outputs | Two-channel (10ohm source impedance) balanced centre-grounded UniSon on 9-pin D-type plug. Unbalanced with phono or jack leads |
| Max Output Level | +18dBu (balanced) |
| Gain | +20dB, +30dB, +40dB ±0.15dB |
| Flatness | ±0.02dB typical from 20Hz to 20kHz |
| Noise | -72dBu ITU-R 468 weighted (-84dBu A-weighted typical) - measured on +30dB gain setting (middle position) |
| Distortion | -70dBu (ITU-R 468 weighted) (-82dBu/0.01% THD) at 1kHz (22Hz-22kHz bandwidth) - measured on +30dB gain setting (middle position) |
| Dynamic Range | 102dB A-weighted noise (middle gain position) |
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