The PQ Mastering Equalizer stands out as a high-precision, dual-channel five-band parametric equalizer inspired by SPL's innovative 120V rail technology. This EQ allows users to switch between constant and proportional Q modes seamlessly, a feature not commonly found in analog equalizers. Its design focuses on delivering precise tonal shaping capabilities, making it ideal for mastering engineers seeking accuracy and musicality in their work.

Each band of the PQ can be independently activated or bypassed, with the ability to toggle between Constant Q and Proportional Q modes for tailored frequency adjustments. The inclusion of a '1/4 Gain Switch' reduces the EQ range, enabling subtle boosts and cuts commonly needed in mastering scenarios. Detented potentiometers ensure that users can dial in settings with confidence and repeatability, enhancing workflow efficiency and control.

Enhanced with exclusive plugin features, this digital version incorporates advanced tools such as Tolerance Modeling Technology, which simulates analog component variations for authentic sound character. Additional capabilities include M/S processing, Mono-Maker for focused low-end, stereo width adjustment, and an Auto Listen function to isolate EQ effects for precise frequency placement. These modern enhancements make the PQ Mastering Equalizer a comprehensive solution for contemporary mixing and mastering tasks.