MPA-201 Class A Microphone Preamplifier
You’ve done, done it….. You’ve purchased a truly exceptional piece of audio gear! Congratulations and thank you for purchasing the MPA201 Microphone Preamplifier from Miktek. We know there are a lot of pretty good low cost mic pres available today, but you’re in an elite group of audio engineers where pretty good is just not good enough. Simply put, that’s why we make our products.
Table Of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Front Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . 3 Rear Panel Layout . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Setting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Operating the MPA-201 . . . . . . . . . . . . . . . . . . . 5 -8 Power the MPA-201 . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Connecting Microphones . . . . . . . . . . . . . . . . . . .
Introduction The Miktek MPA-201 dual channel, Class A microphone preamplifier provides a pristine signal path with a sweet and linear response that will please the most sophisticated listeners. With 70 dB of gain, 48-volt phantom power and variable impedance selector, the MPA-201 will highlight and enhance the sound of most any microphone. Each channel boasts a large analog VU meter that can be switched from input to output, plus an LED Peak output meter, making it easy to set a good level.
Front Panel Layout 1 8 2 3 4 5 9 10 11 12 13 6 14 7 1 15 8 2 3 4 5 9 10 11 12 13 6 14 Front Panel Layout 1. GAIN – Selects Input level gain from 20 to 70dB 2. IMPEDANCE SELECTOR – Used to switch in input impedance from 300, 600 or 1200 Ohm input load 3. HI PASS Switch – Used to Engage the High Pass Filter 4. FREQUENCY – Control used to set the Cut Off frequency from the High Pass Filter 5. OUTPUT LEVEL – Control knob to adjust output level 6.
Rear Panel Layout A B C D E F Rear Panel Layout A. OUTPUT 1 – Male XLR connector for Channel One microphone input B. OUTPUT 2 – Male XLR for Channel Two microphone input C. IEC Socket – Connect a standard IEC power mains cable D. VOLTAGE switch – Used to select the Mains operating voltage. IMPORTANT NOTE: Be sure to check the switch is set to the correct voltage used in your country. E. INPUT 1 – Female XLR connector for Channel One microphone output F.
Operating the MPA-201 Powering the MPA-201 The first time you use the pre amp, check to see the MAIN voltage switch is set to the voltage that is correct in your country. Now, with the power switch set to the OFF position, connect the included IEC mains power cable to the IEC socket located on the rear panel. Next, connect the IEC Mains cable to a compatible main power outlet. It is always a good idea to start with the OUTPUT level controls turned all the way off (fully counter clockwise).
Operating the MPA-201 IMPORTANT NOTE: When you plug a cable the front panel INST/ LINE the MIC input is switched off, so unplug the cable when you go back to using mic inputs. Connecting the MPA-201 to Your DAW or Mixer Next connect the CHANNEL 1 and CHANNEL 2 MIC OUTPUTS to your audio interface or mixer inputs.
Operating the MPA-201 Using the variable IMPEDANCE control In order to properly reproduce the correct frequency response of any given microphone, the output of the mic and the input of the mic pre must have the correct impedance match. The general rule of thumb (and correct electronic design) is that the input impedance of the pre amp should be 5 times greater than the microphone’s output impedance.
Operating the MPA-201 Using PHANTOM Power The MPA-201 provides a standard 48-volt phantom power supply for using condenser microphones, active ribbon microphones and active direct boxes. Press the PHANTOM power switch in, and the LED will illuminate indicating the phantom power is active. IMPORTANT NOTE: As with any mic input, there will be a noticeable pop in the audio when plugging and unplugging a mic cable with the Phantom power on.
Specification MPA-201 Specification Type Frequency Response GAIN Controls Impedance High Pass Phase Phantom Dimensions Weight Class A 10Hz – 100 kHz 20 - 70 dB Variable 300, 600 and 1200 Ohms Variable 18Hz - 300Hz Relay Switching 48 Volts 19” x 14 x 3.75 16 lbs. Specifications subject to change without notice.
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