Parametric Equalizers

• Clickless bypass relay
• Push Pull Type Tube Gain Stage
• Format: 19 "/ 3U

• Ideal for summing applications in mixing and mastering
• Linear tilting: higher frequencies are boosted while lower frequencies are attenuated - and vice versa
• Additional 3 band EQ with boost/cut and three selectable frequencies per band
• Boost and attenuation with +/-4dB in the treble band. +/-2dB in the mid band and +/-6.5dB at low frequencies
• Relay bypass
• Adjustable overall output level
• Switchable between tube and solid state topology
• Tube amplification based on 6H23n (E88CC/6922) tubes
• Blanced XLR inputs and outputs
• Dimensions: 2 U, 19
• Weight: 6 kg

Note: Can only be operated with 230V mains voltage

• Classic 550B Design
• Switchable level range for finer resolution of complex sound sources or mastering
• Output stage implemented with transmitter (+30 dBm)
• High and low peak/shelf filters
• Balanced inputs and outputs (XLR)
• Additional unbalanced input TRS each channel
• Internal power adapter
• With hardwire bypass

• 4-Band EQ based on the EQ section of the classic 1081
• Adjustable frequencies between 33 and 15000 Hz
• Stepped frequency selector switch
• Boost / Cut up to +/- 18 dB
• "Off" mode for each band
• Tantalum capacitors in the signal path
• Connectors: 6.3 mm jack input and output
• Ground lift switch
• Metal housing
• Enclosure size: 9.5" / 1 U
• Includes external power supply (24 V AC)

• Analog 2-channel equalizer with digital control and preset memory with 399 places
• Stereo, dual mono and mid / side operation with solo function
• Stereo 12 or 24dB / oct. High pass filter with adjustable cutoff frequency (10 - 250 Hz) and resonance
• 4 Parametric stereo filters, each with ± 15 dB gain and variable Q factor (0.2 - 2)
• EQ1: 22 Hz - 470 Hz (bell / shelf)
• EQ2: 90 Hz - 2 kHz (bell)
• EQ3: 400 Hz - 10 kHz (bell)
• EQ4: 1kHz - 23kHz (bell / shelf)
• Additional passive stereo equalizer with extended hi-boost section (20 and 28 kHz) and separate frequencies for low-boost and low-cut settings
• Gain Lock and Auto-Q functions
• Can be controlled and automated via plug-in and USB connection
• Supported formats: AU / VST / VST3 / AAX
• Maximum input level: +23 dBu
• Maximum output level: +23 dBu
• Frequency response: 5 - 30.0000 Hz (+/- 0.1 dB)
• Dynamic range:> 129 dB @ +18 dBu, 20 kHz BW
• THD + N: 0.023% @ +4 dBu, 0.1% @ +18 dBu, 20-20 kHz
• Crosstalk: min -90 dB @ 1KHz, max -55 dB @ 30Hz, +18 dBu, 20 kHz BW
• 2 Balanced XLR inputs
• 2 Balanced XLR outputs
• Dimensions (H x W x D): 19 "x 2 U x 250 mm
• Weight: 5.5 kg

• With gain modification for level adjustments of two devices
• CineMag input and output transformer - made in the USA
• Premium 12AX7 and 12AU7 tubes
• CineMag inductor EQ section
• The EQ section can be set to bypass while the signal is still running through the tubes and transformers, thus keeping the "warmth" of the tube
• Transformer balanced inputs and outputs (XLR and jack)
• Linear frequency response from 20 – 50,000 Hz
• Boost and cut can be used simultaneously to allow phase effects
• Low frequency boost - 20, 30, 60, 100, 200, 400, 800 Hz - 12 dB
• Low frequency cut - 20, 30, 60, 100, 200, 400, 800 Hz - 18 dB
• High frequency boost - 3, 4, 5, 8, 10, 12, 16 kHz - 18 dB
• High frequency cut - 3, 4, 5, 10, 20 kHz - 14 dB
• 5 more additional frequency points than the EQP-1 A for greater versatility
• Integrated 115 / 230 V IEC power supply
• Dimensions: 19" / 2U

• 120 V technology
• Fully parametric five-band equalizer
• Frequency range: 10 - 40,000 Hz
• Type: 19 "/ 4 U
• Dimensions (W x H x D): 482 x 177 x 311.5 mm
• Weight: 15.2 kg
• Colour: Black

• Low / low bass: 20, 30, 60 and 100 Hz
• (Peak with adjustable bandwidth): 5,000, 6,000, 8,000, 10,000, 12,000 and 16,000 Hz
• High-frequency attenuation: (Hi shelf): 5,000, 10,000 and 20,000 Hz
• Balanced XLR inputs and outputs
• High-quality input and output transformers
• Bypass switch
• Internal power supply
• Dimensions (H x W x D): 88.1 (2 HU) x 483 x 220 mm

• Vintage style electronics
• No integrated circuits in the signal path
• 3 Bands
• Frequency selection with detented pots
• Frequency range: 20 to 24,000 Hz
• Control range +/- 18dB
• Bypass per frequency band
• Tantalum capacitors in signal path
• Burr Brown OPA 2602 IC for balanced output
• Carnhill coil in the midrange section
• Ground lift switch
• 1 Line input: combo XLR/6.3 mm jack
• Line output: XLR and jack 6.3 mm
• Insert: 6.3 mm jack
• Incl. external power supply

• Replica of the "MOTORCITY EQualizer
• Historically correct knob layout with specially shaped Bakelite knobs
• Identical equalizer circuit (including the specially made capacitors and inductors from the 1960s)
• 7 Frequency bands across the entire sound spectrum from 50 Hz, 130 Hz, 320 Hz and 800 Hz up to 2 kHz, 5 kHz and 12.5 kHz with stepped rotary switches for boosting or cutting by 8 dB in 1 dB steps
• Bypass switch
• On/off switch
• UTC replica input transformers with optimised transfer ratio
• Output amplifier with Carnhill transformer
• 1 Line input: XLR
• 1 Line output: XLR
• Power supply: external power supply 100 - 240 VAC, 50/60 Hz, 0.6A, 48V DC, 520 mA, max. 25W
• Format: 19" / 2U
• Weight: 4.7 kg

• Reproduction of the "MOTORCITY EQualizer"
• Historically correct control layout with specially shaped Bakelite buttons
• Identical equalizer circuit (including the specially made capacitors and inductors from the 1960s)
• 7 Frequency bands across the entire sound spectrum from 50 Hz, 130 Hz, 320 Hz and 800 Hz up to 2 kHz, 5 kHz and 12.5 kHz with stepped rotary switches for boosting or cutting by 8 dB in 1 dB steps
• Bypass switch
• On/Off switch
• UTC replica input transformers with optimised transfer ratio
• Output amplifier with Carnhill transformer
• 1 Line input: XLR
• 1 Line output: XLR
• Power supply: External power supply 100 - 240 VAC, 50/60 Hz, 0.6A, 48V DC, 520 mA, maximum 25W
• Construction: 19" / 2U
• Weight: 4.7 kg

• Classic sound control and transparency
• Variable high and low pass filters for perfect exclusion of unwanted signal components
• Input impedance: > 20k Ohm
• Input level max.: +26 dBu
• Output impedance:
• Output level max.: +26 dBu (10k Ohm load impedance)
• Frequency response: 20 to 20000 Hz +/-0.2 dB
• Distortion (THD+N) @ 1 kHz/ 0 dB: 0,007%
• Crosstalk: -75 dB @ 1 kHz
• Low cut frequencies: 10 to 225 Hz
• Low: 35 to 700 Hz
• Low slope: 6, 9, 12 dB
• Peak
• Low level: +/- 12 dB
• Low-Mid frequencies: 55 to 21000 Hz
• Low-Mid bandwidth: 0.33 to 3.3 octave
• Low-Mid level: +/- 12 dB
• High-Mid frequencies: 400 to 14000 Hz
• High-Mid bandwidth: 0.33 to 3.3 octave
• High-Mid level: +/- 12 dB
• High frequencies: 1.2 to 20000 Hz
• High slope: 6, 12 dB
• High level: +/- 12 dB
• High cut frequencies: 4 to 32 kHz
• Power supply: 230V or 115V, 15VA
• Dimensions (W x H x D): 482 x 44 x 202 mm
• Weight: 2.8 kg

The EMI TG12345 Curve Bender TG Equalizer was released on the 75th anniversary of Abbey Road Studios. Developed by Chandler Limited Designer Wade Goeke and Abbey Road's "senior engineer" Peter Cobbin. Based on the classic EMI TG12345 console, which was used for productions by Pink Floyd and the Beatles

• 51 EQ points and boost / cut function
• For up to 15 decibels boost / cut
• Suitable for recording, mixing, and mastering
• Connections: 2x XLR input, 2x XLR output

Heritage Audio Motorcity EQualizer Stereo Set, contains 2x Motorcity EQualizer; technical specifications per Unit: passive 1-channel analog equalizer; replica of the "MOTORCITY EQualizer"; historically accurate knob layout with custom molded Bakelite knobs; identical equalizer circuitry (including custom 1960s capacitors and inductors); 7 frequency bands across the sound spectrum from 50 Hz, 130 Hz, 320 Hz and 800 Hz to 2 kHz, 5 kHz, and 12.5 kHz with stepped rotary switches to boost or cut 8 dB in 1 dB steps; bypass switch; on/off switch; UTC replica input transformers with optimized transfer ratio; output amplifier with Carnhill transformer; connectors: 1x line input XLR, 1x line output XLR; external power supply: 100 - 240 VAC, 50/60 Hz, 0. 6A, 48V DC, 520 mA, max. 25W; Design: 19" 2U; Weight: 4.7 kg

• 4 tapes per channel
• Circuit fully passive
• Overlapping frequency ranges
• Each band offers the possibility of Shelf or Bell
• Pro Band: Cut, Boost, and Off
• Tube Make-Up Gain
• Passive high-pass and low-pass filters
• Level +4 dBU (can be switched internally to -10)
• EQ Frequency control range: 22 to 27000 Hz
• EQ Boost / Cut Range: 20 dB Boost / 20 dB Cut
• Frequency range: +/- 2 dB: 8 - 60000 Hz
• Maximum output at 1.5% THD +37 dBv, +26 dBv at 20 Hz
• THD & noise (1KHz at +4 dBu): 0.06%
• Noise Floor (with respect to + 4dBu): -85 dB (A Weight)
• Dynamic Range: 120 dB
• Bypass switch
• Inputs and outputs as balanced XLR and 1/4 " jack
• Weight: approx. 9.5 kg

• 100% Discrete Class-A technology
• Active filter stages without coupling capacitors
• A total of 2 x 5 bands
• 2 x 3 Semiparametric bands
• Switchable filter quality
• Switchable boost/cut mode
• 2 High and low shelf filters
• Resonance-capable highpass and lowpass filter
• Switchable warm mode for sound colouring
• Rasterized and matched potentiometers
• Frequency range: 200 kHz (-0.2 dB)
• Noise: 20 Hz - 20 kHz -91,6 dBu
• Dynamic range: 20 Hz - 22 kHz (119 dB)
• Maximum level input/output: +27/+27 dBu
• Input impedance 10 kOhm
• Output impedance 68 Ohm
• Design: 19" Rack format 2U

• 100% Class-A topology
• True stereo link
• High- and low-shelf filters
• Resonant high and low pass filters
• Two parametric mids with switchable Q
• Additional passive high-band
• Detented computer-selected potentiometers
• Special low-tolerance capacitors
• Optimum shielding against electrical interference is provided by a copper-plated grounding board that runs close to the signal path conductors
• Frequency response (-3.0 dB):
• Noise (20 Hz - 20 kHz): -98 dBu
• Dynamic range (20 Hz - 22 kHz): 120 dB
• Maximum input/output level: +21 dBu
• Input impedance: 10 kOhm
• Output impedance: 68 Ohm
• 2 Line inputs XLR / 6.3 mm jack
• 2 Line outputs XLR / 6.3 mm jack
• Desktop housing
• Includes power supply
• Made in Germany

In present days, no mastering studio can pass a Massive Passive. The Massive Passive is probably the most commonly encountered equaliser in mastering studios and there is a reason. The unique sound and the unique way of operation enabling filtering options which can't be realised with other EQs set this device apart. The four parametric filters per channel are coupled in parallel. Thus, the Massive Passive behaves differently than other EQ - you can create curves for which you would need 6 bands with conventionally operating EQ.

How does it sound? The passive filters are very transparent and only the tubes lend character to the device. The centres are legendary and many believe there is nothing better for Rock. But even with acoustic music the Massive Passive retains an open character, even if a little more action has to be taken at times. In the bass and treble ranges, curves can be generated which are similar to the Manley Pultec. Just by varying the bandwidth a powerful and crisp, or a fat and warm bass can be created. The mastering version does not have discrete resistors behind the front panel like the SLAM! or VariMu, but works with mechanically stepped pots with a narrower range providing a higher resolution. You can use the standard version for mastering, no problem. When processing individual signals you just lean in a bit.

• Mastering version with stepped potentiometers and changed filters for mastering applications
• 4 Bands per channel
• Circuit completely passive
• Overlapping frequency ranges
• Each band offers the possibility of Shelf or Bell
• Each band: Cut, boost and off
• Tube make-up gain
• Passive high-pass and low-pass filter
• Level +4 dBU (can be switched to 10 internally)
• EQ frequency control range: 22 - 27000 Hz
• EQ Boost/cut range: 20 dB boost/20 dB cut
• Frequency range: +/- 2 dB: 8-60,000 Hz
• Maximum output at 1.5% THD dBv +37, +26 dBv at 20 Hz
• THD & Noise (1KHz at +4 dBu): 0.06%
• Noise floor (relative to +4 dBu): -85 DB (A Weight)
• Dynamic range: 120dB
• Bypass switch
• Inputs and outputs as balanced XLR and 6.3 mm TRS
• Weight: approx. 9.5 kg

• Carnhill-based, transformer-coupled balanced inputs and outputs
• Class-A output stage in '73 style
• Asymptotic EQ section: HF selectable between 8, 10, 12, 15, 20 and 24 kHz, boost / cut maximum 10.5 dB in 0.5 dB steps, LF HF selectable between 470, 360, 220, 110, 60 and 20 Hz, boost / cut maximum 10.5 dB in 0.5 dB steps
• Filter section: 12dB / octave high pass filter, -3dB point selectable at 160, 82, 47, 20 and 15 Hz
• 12dB / octave low pass filter, -3dB point selectable at 10, 12, 18, 22 and 30 kHz
• Bypass function
• Connectors: 2x XLR input, 2x XLR output
• Switch for M/S
• Construction: 19" / 1U
• Includes external power supply unit

• Vintage style electronics
• No integrated circuits in the signal path
• 3 Bands
• Frequency selection with detented pots
• Frequency range: 20 to 24000 Hz
• Control range +/- 18dB
• Bypass per frequency band
• Tantalum capacitors in signal path
• Ground lift switch
• 1 Line input: combo XLR/6.3 mm jack
• Line output: XLR and jack 6.3 mm
• Insert: 6.3 mm jack
• Includes external power supply