Phoenix Audio Gyrator EQ 500 Series 4-Band EQ

The Phoenix Audio Gyrator EQ 500 is a highly versatile four-band inductor-style EQ. Modeled after the DRS EQ 500, the Gyrator features all new selectable frequency positions and a dedicated “sheen” control for boosting frequencies at 25 kHz. Equipped with a 24 V power supply, the Gyrator EQ delivers the same powerful sound as full-sized Phoenix Audio processors in a compact 500 series module.

INDUCTOR-STYLE EQUALIZATION

Originally introduced in the 1970s, gyrator EQs were known for their highly musical sound. Similar to active inductor designs from Neve and API, gyrator EQs feature a proportional bandwidth that narrows as the gain is increased. However, vintage gyrator EQs tended to be big, heavy, and noisy. The Phoenix Audio Gyrator EQ 500 utilizes a solid-state design that not only solves these issues, but also improves upon the original design.

FOUR-BAND FIXED DESIGN

Equipped with four bands, each with three selectable frequencies, the Gyrator EQ 500 is incredibly easy to use. The low band extends all the way down to 40 Hz for rich, booming lows. A switchable high-pass filter can be used to created unique Pultec-style EQ curves. Two mid bands are perfect for cutting muddiness in the low-mids, adding bark and bite to tracks, or taming harshness. The high band features a dedicated “sheen” control fixed at 25 kHz for adding presence to tracks—perfect for breathing new life into acoustic instruments.

FULL POWER

Like all of Phoenix Audio’s 500 series modules, the Gyrator EQ 500 is equipped with a 24 V step-up transformer to provide the true sound quality of the design without being limited by the 16 V Lunchbox design. This also enables the Gyrator EQ to deliver authentic analog saturation. At low levels, the Gyrator offers an ultra-clean, transparent sound, but crank up the dials to drive the output stage for fat, fully saturated tones.