Solid State Logic 611EQ 500 Series Equalizer Module

Product Description:

Additional information

Weight 7.0 lbs
Dimensions 3.6 × 6.4 × 10.1 in
Product Condition USED


Capture the iconic sound of the legendary SSL E-Series channel EQ right in your 500-series rack with the SSL 611EQ. A near-identical recreation of the classic Solid State Logic SL 4000 E console channel strip design, the SSL 611EQ combines the beloved four-band design with a versatile Black/Brown switch for two totally different response curves.


The SL 4000 E console has been used to mix countless classic records. Renowned for its punchy, grungy sound, the E-series channel strip is one of the most beloved EQ designs ever created. Now with the new SSL 611EQ, you can capture the sound of the original “Brown knob” design from the early 80s as well as the updated “Black knob” design from the mid to late 80s in one flexible 500-series package.

All SSL consoles prior to the summer of 1985 were equipped with “Brown-02” card, which offer a cut/boost of +/-15dB. The last version of the standard E series EQ is the ‘Black-242’ card, which features a cut/boost of +/-18dB. Both models feature unique frequency response curves, giving you two totally different tonal options a single module.


The SSL 611EQ features a four-band design, providing plenty of flexibility for tone shaping. Both the high and low frequency bands can be toggled from shelf to bell, allowing for broad adjustments or surgical precision. The midrange bands are fully parametric with controls for gain, frequency and Q allowing for diverse tone sculpting options. The BLK button toggles between the Brown and Black EQ circuits, while the IN button provides an easily accessible bypass button for A/Bing tracks.


The low-frequency band on the SSL 611EQ features a frequency range of 30 Hz to 450 Hz for thick, rich lows. The LMF band ranges from 200 Hz to 2.5 kHz, and the HMF band ranges from 600 Hz to 7 kHz, providing lots of flexibility in the crucial midrange. Finally, the high-frequency band features selectable frequencies from 1.5 kHz to 15 kHz for bright, sparkling highs.


  • Immortal SSL 4000 E Series circuitry
  • “Black-242” and “Brown-02” twin EQ design
  • Versatile 4 band channel EQ
  • Bell curve option on HF and LF
  • Fully parametric LMF and HMF with Q
  • Based on classic 611E console channel strip
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