MP213 Dual Mic Preamp
Product Information
The MP213 Dual-Mic Preamp is a versatile audio device designed
to enhance the quality and performance of microphones. With its
dual-mic capability, it allows for the simultaneous connection and
amplification of two microphones. The preamp features multiple
input and output options, including XLR and 1/8 (3.5mm) TRS
balanced mic inputs, as well as XLR balanced and 1/8 stereo
outputs. It is compatible with both balanced and unbalanced audio
systems, offering a wide range of connectivity possibilities.
The impedance of the inputs is 10K Ohms, making it suitable for
various microphone types. The XLR balanced output operates at a
level of +4 dBV, while the 1/8 unbalanced output operates at a
level of +10 dBV. This ensures optimal signal strength and
compatibility with different audio equipment.
The MP213 Dual-Mic Preamp provides substantial gain control,
with a maximum gain of 60 dB for XLR inputs and 54 dB for 1/4
inputs. This allows for precise adjustment of the microphone signal
to achieve the desired audio levels.
Product Usage Instructions
- Connect your microphones to the preamp using either XLR or 1/8
(3.5mm) TRS balanced mic inputs. Ensure that the connections are
secure. - If using an unbalanced audio system, connect the XLR balanced
output to your audio device using an XLR cable. If using a stereo
system, connect the 1/8 stereo output to your audio device using an
appropriate cable. - Adjust the gain control knobs to set the desired amplification
level for each microphone. Start with a lower gain setting and
gradually increase it until the desired audio level is
achieved. - Monitor the audio output from the preamp through your audio
device or headphones to ensure the signal quality and levels are
satisfactory. - Make any additional adjustments to the gain control as needed
to fine-tune the audio levels. - When finished, disconnect the microphones and turn off the
preamp.
Note: It is recommended to refer to the user manual of your
specific audio equipment for any additional instructions or
compatibility considerations.
MP213 Dual-Mic Preamp
Inputs: XLR, 1/8″ (3.5mm) TRS balanced Mic In
Outputs: XLR balanced, 1/8″ Stereo
10K Ohms bal, unbal.
+4 dBV XLR bal, +10 dBV unbal.
60 dB/XLR, 54 dB 1/4″
<10 deg. 20 Hz – 20 kHz
-108 dB max.
+48 Volts, 6 mA
15 VDC adapter
<.01%
<.01%
> 80dB
1 lbs (.45Kg)
6.75″ x 4.2″ x1.4″
– Home – Studio – Broadcast … Anywhere you need a clean preamplifier for your favorite dynamic or condenser microphones
Connection guide
FEATURES – XLR and 1/8″ Mic Inputs – XLR Outputs – Dual channel summed mono XLR output – Gain Controls – Clip LED indicators – 1/8″ Output for stereo microphone recording or monitoring – +48 Volt Phantom Power
SPECIFICATIONS
Connectors:
Input Impedance:
Max Input Level:
Max Gain:
Phase Shift:
IMD (SMPTE)
Phantom Power:
EIN:
THD:
CMRR:
Power :
Weight:
Size:
What’s in the box? 1 – Made in USA MP213 1 – 15V power supply PN PS27s 1 – This owners manual
Rolls Corporation Salt Lake City, UT 7/23
The MP213 is designed to provide simple, inexpensive microphone pre amplification for a variety of applications. The unit has both XLR and 1/8″ inputs. XLR and 1/8″ outputs, with a single Gain control with a Clip LED indicator for each channel. Phantom power is included for use with a condenser microphone. The 1/8″ stereo output is specially designed for use as camera microphone mixer or a monitoring output.
The MP213 uses a servo balanced instrumentation amplifier for studio grade performance in a small package. This equates to a 40 db better common mode rejection ratio (CMRR) than transistor inputs used by most companies on mic inputs. It also means much lower distortion.
Channel 1 and 2 are identical in operation and features
Stereo TRS 1/8″ output: Channel 1 is on the right output and channel 2 will be on the left.
OUTPUT: XLR jack for signal output.
Female XLR jack for signal input.
Mono XLR output: This is a mono summed output for both left and right outputs.
DC jack for connection to the included Rolls PS27s power supply
INPUT BALANCED
OUTPUT BALANCED
OUTPUT BALANCED
TRS
CH1 RIGHT CH2 LEFT STEREO OUTPUT
INPUT BALANCED
MONO BALANCED
CH1 & 2 COMBINED
OUTPUT
PWR
15 VDC
+ –
Dual-Mic Preamp
MP213
CHANNEL 1 – RIGHT
INPUT
GAIN 6 dB 50
clip
48V PHANTOM
POWER
CHANNEL 2 – LEFT
GAIN
INPUT 6 dB 50
clip
power
INPUT: 1/8″ (3.5mm)
GAIN: Controls the amount of signal increase to the MP213.
CLIP: LED for indicating circuit clipping. Indicates distortion is possible.
PHANTOM POWER: When pressed in, applies +48 volts of phantom powering to both Ch 1 and Ch 2 XLR inputs.
Power switch and LED for indicating power is applied to the MP213.
