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PM1A Modular Microphone Preamp and DI

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Item: N13-6251

Availability: Out of stock

PM1A Modular Microphone Preamp and DI


The PM 1A is a combined mic preamp/DI, based on a classic TUBE-TECH design, but featuring even higher fidelity and a few new features: An impedance switch to match the input perfectly to all types of microphones, an overload indicator, and 2 dB gain steps. Serious listening tests of the PM 1A have revealed a sound quality second to none, placing it among a handful of the world's very best designs.

The PM 1A DI continues the TUBE-TECH tradition of extremely good sounding DI's, delivering world class sound for bass and guitar DI recordings. You simply won’t find a better DI than this! Note: Due to the high quality of the TUBE-TECH RM Series power supply and the pristine audio circuits, the Modular Series products deliver exactly the same uncompromised sound quality as our 19” units.


  • Combined Microphone Preamplifier and Direct Instrument amplifier
  • Input provides a switchable +48 V phantom power, a selectable mic impedance, a phase reverse switch, a low-cut filter, as well as a switchable -20 dB pad
  • Gain is adjustable from +10 dB to +70 dB

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  • All-tube design featuring push-pull output amplifier
  • Frequency response @ -3 dB: 5 Hz to 60 kHz
  • Typical noise: 5 dB @ 200O
  • 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 O/1.2 kO/2.4 kO
  • Selectable pad in front of input transformer (-20 dB)
  • Selectable +48 V phantom power
  • Low cut filter (20 Hz/40 Hz/Off)
  • Phase reverse
  • Overload indicator
  • Gold plated switches
  • DI Jack input for a variety of instruments
  • DI input impedance > 1 MO
  • MU-metal shielded input transformer
  • In- and output are transformer balanced and fully floating

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