EM1A EQ

What engineers think:

The TUBE-TECH EM1A Passive Tube Eq is an exact copy of

our oldest "classic" , the PE1C, based on the Pultec EQP1A

The PE1C circuit is squeezed down to modular size, but not changed at all!

Due to the capabilities of the RM series power supplies, it is possible to have the exact same sound from the circuit as in the 19" rack model from a RM module.

All the characteristics of the PE1C and the famous special features is there.

All components, including all transformers are exact the same as in PE1C.
Picture

Technical Description and Features

The TUBE-TECH EM 1A is a passive tube equalizer.

The TUBE-TECH EM 1A Equalizer contains a low frequency boost and attenuation section (shelving), and a high frequency boost section (peaking). The high frequency section has variable bandwidth as well as attenuation (shelving). The filter section is of the passive type followed by a tube based push-pull amplifier to restore the gain.

Input and output are balanced as well as fully floating. Input and output transformers come with a static screen between the primary and secondary wirings.


  • Passive equalizer
  • Tube based push-pull amplifier
  • 4 low frequency boosts: 20, 30, 60 and 100 Hz (0 to +14 dB)
  • 4 low frequency attenuations: 20, 30, 60 and 100 Hz (0 to -18 dB)
  • 10 high frequency boosts with variable bandwidth: 1, 1.5, 2, 3, 4, 5, 8, 10, 12 and 16 kHz (0 to +18 dB with sharp bandwidth sharp, 0 to +10 dB with broad bandwidth)
  • 3 high frequency attenuations: 5, 10 and 20 kHz (0 to -18 dB)
  • Frequency response @ -3 dB: 5 Hz to 40 kHz
  • Low noise: < -85 dB @ 0 dB gain
  • No insertion loss
  • Click less in/out switch