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» Used / Vintage EQs

Used / Vintage EQs

If youʼre in search of unique sounds, vintage equalizers are a good starting point.
Before the days of unlimited audio channels, vintage tube EQs and graphic
equalizers were used to shape the final mix and bring out individual instruments
within a mono track. Some of these techniques are lost today, but the gear lives
on in the Sonic Circus vintage EQ department, where you might find a racked
pair of EQs from a classic console, or a sophisticated parametric mastering unit.
Keep your ear on this space if youʼre a fan of unique sounds.

EMI RSA AM22 EQ Module (Vintage)

Vintage Stereo EMI EQ Module A Stereo EMI RSA AM22 Module originally from a BBC broadcast desk. Signals were routed to the R.S.A (Response Selection Amplifier) for EQ. The AM22 features a Hi (10k) and Lo (60hz) frequency boost/cut and a fixed Mid presence boost only at 1.4k, 2.8k, 4.0k, and 5.6k.

Price: Call or Email for Price and Info


Focusrite ISA 110 Pair (Used)

Pair of Mic Pre/EQ Channel Strips This is a pair of  rack mount Focusrite ISA110s. Rupert Neve first designed the ISA110  as mic pre/EQ modules to augment George Martin's Neve consoles at AIR Montserrat. This design features a transformer-coupled mic preamp, a four band EQ, and high and low pass filters that produce the uniquely musical Neve sound.

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SPL Passeq Passive EQ

Powerful Passive Studio EQ The SPL Passeq Passive EQ js the most powerful passive EQ ever made. The Passeq is a neo-classic design with separate passive hi, mid and low boost & cut filters with 120V rail gain make-up stages and Lundahl I/O transformers. The musical character and rich sound of passive filters built with selected components fulfill the highest sound expectations in recording, mixing and mastering.

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Fairchild Model 673 Dynalizer (Vintage)

Vintage Dynamic Equalizer This is a Fairchild 673 ‘’Dynalizer’’ Dynamic Equalizer. According to John Klett, it uses the same slow optical system as the Fairchild 661 and 663 and operates as an automatic loudness control, applying a Fletcher-Munson Loudness curve which boosts the highs and lows as the level drops. The 673 was a staple in Joe Meek’s studio in the early ‘60s along with the Fairchild 660 and 661 limiters.

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Pultec EQH-2 Program Equalizer #2361 (Vintage)

Original Pulse Technologies Pultec Program EQ This original mint condition "BlueFace" Pulse Techniques Inc, EQH2 is a 2 band passive program EQ that uses a 12AX7/6AQ5 tube gain stage driving a Triad HS50 output transformer in class A mode. The 2 Bands have selectable frequencies with continuously variable boost and attenuate (cut). Unlike the EQP1A the boost and cut can be used simultaneously giving the EQH2 its own unique character. This gives you the ability to sculpt the EQ while retaining that warm smooth Pultec sheen. The massive vintage transformers provide the depth and imaging.  Add vintage American Mojo to your outboard collection and give much needed life and personality to your digital tracks.  Simply put vintage Pultec EQ's are magical! Bass Tracking Tip: Try a Neve style DI boost 60Hz on the Pultec EQH2 and Compress (1176, DBX165).  Fat and Funky

Low frequencies: 20-30-60-100 Hz

Boost: 13.5 dB, attenuate: 17dB

High frequencies: 3-5-8-10-12 KHz tube

Boost: 16 dB, attenuate: 16dB (10kHz shelf only)

Price: Call For Price


Pultec HLF-3C Program Filter #7532 (Vintage)

Vintage Passive Program Filter The Pultec HLF3C is a vintage passive filter that provides 12 dB per octave low and high cut filters. This is the classic royal blue version and is in beautiful condition.

Low Cut

High Cut

Price: $1,500.00



Quad 8 444 EQ Modules (8) with Discrete Mic Pres - Racked (Vintage)

Vintage Racked Quad 8 EQ/Pre Modules from Warner Brothers Console This is an outstanding Quad Eight rack with 8 discrete mic pre’s and 8 original 444 EQ modules. The 444 is a 4 band semi-parametric EQ with with 11 switchable equalization points, gain, frequency and Q control on each band, and selectable peaking and shelving on the high and low bands, as well as High and Low pass filters. These modules came from the film scoring console at Warner Bros.

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Z-Systems Zq1 Digital Paramtric EQ (Used)

Digital Parametric Stereo Mastering EQ 2-Channel Digital Parametric Stereo Mastering EQ from Z-Systems. 

Price: $850.00



CHANDLER GERMANIUM Tone Control with PSU-1 (Used)

Mono Active/Passive EQ Used Chandler Germanium Tone Control EQ in excellent condition.  Includes PSU1. Tone shape 3 simple bands Thick (Boost/Cut), Presence and Treble to the fullest potential while controlling feedback and drive. the GTC really allows you to get behind a source and really put some artifacts on it. Really cool design.  Wade has done it again!

Price: $1,425.00



Amels 1101 Parametric EQ (Used)

Mono Parametric EQ The Type 1101 is a two rack space mono parametric audio equalizer featuring the highest quality switches and components in an all  class-A discrete design.  Unlike other parametric equalizers there are no potentiometers, only high quality Swiss made, gold contact, Elma audio rotary switches for frequency and gain controls.  Discrete switch positions make this equalizer ideal for recalling mastering settings.

Price: $2,200.00



Chandler LTD-1 with PSU1 (Used)

Vintage Style Mic Preamp and Instrument DI with Class-A Amps and Transformers, and Double EQ Section Own this pre owned Chandler LTD1 with PSU1.  Loved and cared for in perfect condition.  American built to the highest standards. You wont be disappointed.

Want the classic Neve 1073 channel-amp sound but don't want to spenda fortune for an un-powered, 30-year-old module? Built new and enhanced with extra frequencies, Chandler's LTD-1 mono-preamp and 3-band EQ will get transport you to that classic British tone-zone where presence and punch rule the day!

Price: $2,125.00


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