Wolff Audio Freq EQ

Wolff Audio FREQ – 500 Series 4 Band Proportional Q Parametric EQ

The Wolff Audio FREQ is a precision engineered 500 series parametric equaliser designed for professional recording, mixing, and live sound applications. Featuring four fully sweepable bands and advanced Proportional Q technology, the FREQ provides exceptional tonal control, allowing engineers to perform both broad musical shaping and precise corrective equalisation with a single unit.

Designed by Legendary Console Engineer Paul Wolff

The Wolff Audio FREQ EQ was designed by Paul Wolff, a respected audio engineer with more than four decades of experience in console and equaliser design. Drawing on years of innovation in analog circuitry, the FREQ represents a modern evolution of classic equaliser concepts refined for today’s professional studios.

The name FREQ was originally coined by legendary producer Terry Lewis, who became one of the first adopters of the design. This history reflects the unit’s strong roots in professional music production and its reputation among engineers seeking precision and musicality.

Advanced Proportional Q Equalisation

At the core of the Wolff Audio FREQ parametric EQ is its Proportional Q design, a feature highly valued in classic analog equalisers. In a Proportional Q system, the bandwidth of the filter becomes narrower as more boost or cut is applied.

This behaviour allows engineers to perform wide, gentle tonal adjustments at low settings and progressively more focused corrections when higher boost or cut values are used.

Paul Wolff expanded the concept further by extending the Q control beyond traditional one octave designs to allow precision down to 1/3 octave, making the FREQ equally capable of:

Broad musical tone shaping
Precise problem solving and notch filtering
Detailed corrective equalisation

This combination gives engineers a highly versatile equaliser suitable for tracking, mixing, and mastering applications.

Four Fully Sweepable Frequency Bands

The Wolff Audio FREQ 500 series EQ features four fully sweepable bands, allowing engineers to target specific frequency ranges across the entire audio spectrum.

Each band can be adjusted independently, making the unit suitable for subtle tonal adjustments, instrument shaping, or surgical corrective work. The flexible frequency control allows the FREQ to adapt easily to different sources including vocals, drums, guitars, keyboards, and full mix elements.

This level of precision ensures consistent and reliable results in professional studio environments as well as demanding live sound setups.

Professional Build Quality and Reliability

Like all Wolff Audio designs, the FREQ parametric equaliser is built to meet the expectations of professional engineers. The circuitry is designed for accurate response, low noise operation, and long term reliability within standard 500 series racks and power supplies.

Its robust construction ensures dependable performance in recording studios, broadcast environments, mobile recording rigs, and live sound systems.

A Modern Evolution of Classic Analog EQ

The Wolff Audio FREQ 500 series parametric EQ combines decades of analog engineering experience with modern precision and flexibility. With its advanced Proportional Q design, four sweepable bands, and highly musical response, it provides engineers with a powerful tool for shaping sound with accuracy and control.

For professionals who demand both surgical precision and musical equalisation, the Wolff Audio FREQ stands out as a versatile and innovative solution in the 500 series format.