Solid State Logic 729720X2 E Series EQ Module for API 500 Series Rack

Classic SSL 4000E Console Equalizer in a 500 Series Module
The Solid State Logic E-Series EQ Mk2 brings the unmistakable sound of the SSL 4000E console’s equalizer section to the API 500 Series format. Designed with precision circuit replication, this module delivers the same tonal character that has defined professional recordings for decades. With two distinct EQ curves—the Black-242 and Brown-02—the E-Series EQ Mk2 provides engineers with the flexibility to shape their sound with legendary SSL precision.

Two EQ Designs for Versatile Tonal Shaping
The E-Series EQ Mk2 features two iconic SSL EQ designs found in different versions of the 4000E console. The Brown-02 EQ offers the original logarithmically symmetric design, ensuring consistent musical intervals across frequency and amplitude settings. The Black-242 EQ enhances the cut and boost range to ±18 dB and introduces a tighter control law for more precise low-frequency sculpting. These two options provide a broad tonal palette suitable for any mix or tracking session.

Four-Band Equalization with Full Parametric Control
This module includes a fully parametric midrange section, allowing engineers to dial in exact frequency shaping with adjustable Q controls on both the low-mid and high-mid bands. The high-frequency (HF) and low-frequency (LF) bands feature a bell curve option, offering additional flexibility when boosting or cutting frequencies. Whether adding subtle air to vocals or sculpting tight low-end, the E-Series EQ Mk2 ensures powerful, musical results.

Authentic SSL Circuitry for Signature Sound
Built with SSL’s renowned analog circuitry, the E-Series EQ Mk2 faithfully recreates the sound of the SL 611E channel strip, ensuring the same rich harmonics and detailed response as the original console. The module operates at a nominal +4 dBu input/output level, maintaining a consistent gain structure across professional recording environments. This design ensures that every mix benefits from the unmistakable SSL tonal balance.

Ideal for Mixing and Tracking Applications
The E-Series EQ Mk2 is equally effective on individual instruments, vocals, and entire mix buses. The flexible frequency response makes it perfect for adding clarity to vocals, punch to drums, or depth to guitars and synths. Whether used for subtle tone shaping or aggressive sculpting, this module delivers the SSL character that has shaped countless hit records.

Seamless Integration with API 500 Series Racks
Designed for easy integration into API 500 Series racks, the E-Series EQ Mk2 allows engineers to bring the SSL 4000E console’s iconic sound to any modular studio setup. Whether used alongside other SSL modules or in a custom 500 Series rack, this module provides the perfect balance of flexibility and classic analog tone.