The TUBE-TECH EM1A Passive Tube Eq is an exact copy of their oldest "classic", the PE1C, based on the Pultec EQP1A.

The PE1C circuit is squeezed down to modular size but has not changed!

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

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

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

EM1A Technical Description

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

EM1A Technical Features:

• 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: