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HomepageMic PreampsMono Mic-Preamps › Tube-Tech PM1A
Tube-Tech PM1A

The Tube Tech PM 1A is an exceptionally smooth sounding microphone preamplifier and direct instrument input amplifier, such as bass, guitar, keyboard etc.

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 worlds 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.

PM1A Technical Description
The TUBE-TECH PM 1A is a combined Microphone Preamplifier and Direct Instrument amplifier.

The input provides a switchable +48 V phantom power, a select-able mic. impedance of 600/1200/2400 Ohm, a phase reverse switch, a 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.

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.
  • All-tube design featuring push-pull output amplifier
  • 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 (-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 M
  • MU-metal shielded input transformer
  • In- and output are transformer balanced and fully floating
  • Reviews
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    Additional information
    For more information about the PM1A, please visit the website of Tube-Tech
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