MP2A Mic Preamp



The TUBE-TECH MP2A is a combined Microphone Preamplifier and Direct Instrument amplifier.
The input provides switchable +48 V phantom power, selectable mic. impedance of 600/1200/2400 Ohm,
phase reverse switch, low-cut filter (20 Hz/40 Hz/off), as well as a switchable -20 dB pad.
Gain is adjustable from +10 dB to +70 dB.( 10db steps, coarse +2 dB steps, fine.)
The Direct Instrument Input are unbalanced with a gain ranging from + 10 dB to + 60 dB.

The amplifier is all tube. Input transformer is enclosed in a MU-metal can. Input and output transformers come with a static screen between the primary and secondary wirings. The input and output are balanced as well as fully floating.


Technical highlights:

  • Frequency response @ -3 dB: 5 Hz to 60 kHz
  •  Selectable impedance: 600/1200/2400 Ohm
  •  +10dB- +70dB gain, adjustable in 2dB steps
  •  Switchable +48Vphantom power
  •  Phase reverse switch
  •  Low cut filter 20Hz/40Hz/off

Manual (pdf)


All tube design with push-pull output amp
Frequency response @ -3 dB 5 Hz to 60 kHz
Typical noise 5 dB @ 200?
CMRR > 60 dB @ 10 kHz
Gain +10 dB to +70 dB in 2 dB steps
DI gain 0-60 dB
Selectable mic input impedance 600 ?/1.2 k?/2.4 k?
Selectable pad in front of input transformer -20dB
DI input impedance >1M?