Description
Vintage Tube Amplifiers and Custom-Designed Transformers set the 
soundstage. True Passive Equalization creates Bountiful and Musical 
Equalization curves. The new RETRO 2A3 is designed as an ultra 
High-Fidelity Program Equalizer whose sonic benefits go beyond the 
equalization process. Accurate to the industry-standard Pultec EQ 
performance, the RETRO 2A3 adds HF boost frequencies in several new 
sweet spots. Carefully implemented HF boost circuits capture the 
signature sound of the original passive equalizers. Use these settings 
to make individual tracks fit in place. Make a vocal shine and add 
distinct presence. There are many satisfying applications, most notably 
the stereo mix buss.
  
 
 
 
 
 Features
A new Subsonic Filter allows you to do peaking low frequency boosts 
that tame the excessive subsonic energy exhibited in the original design
 if that’s what you want. Utilizing the interstage transformer, the 
filter not only reduces the subsonic energy but also provides distinct 
transformer tonal characteristics for tracking and mixing. The filter 
has settings of 40 and 90 Hz with a peaking response and sharp cutoff. 
The 40 Hz setting has no apparent loss of lows as it adds excitement to 
the 35-40 Hz region that is golden in many listening environments. The 
smoothing effect is pleasantly apparent throughout the midrange. It is 
easily switched-out for applications that require tight, accurate low 
frequency response.
In consideration of the limited real estate in your rack, the RETRO 
2A3 packs two EQ channels into one 2U space with surprising freedom of 
movement, ease of adjustment and familiarity. Use the two channels for 
stereo, separately on independent tracks or cascaded for extended 
equalization possibilities. The channel separation exceeds 70 dB.
The RETRO 2A3 passive equalizer circuits do not rely on amplifier 
feedback, which can cause a harsh and clinical sound in typical active 
equalizer designs. By incorporating pure passive Capacitor - Inductor 
based equalization; the RETRO 2A3 sounds so natural and effortless even 
with extreme boosts and cuts. We also gave special attention to the 
Pultec-style bass boost/bass cut method that is essential to a powerful 
bass and kick drum EQ. This involves simultaneous low frequency boosts 
and lower-mid cuts that can scoop out the mud and add real punch. Quite 
simply, there are benefits to having the RETRO 2A3 in line without even 
equalizing, as the tube amplification has it’s own unique musicality. 
The RETRO 2A3 Dual Channel Tube Program Equalizer provides a very useful
 palette of colors and textures ready for tracking, mixing and 
mastering.