The heart of Apex GX-230 equaliser is a bank of 30 constant-Q bandpass filters made with Dynamically Laser Trimmed (DLT) hybrid circuits per channel. The DLT-technology offers you ultra accuracy and artefact-less frequency, phase and amplitude response. The constant-Q design preserves filter bandwidth independent from the amplitude control settings and therefore minimises the adjacent band interaction. Constant-Q reinforces the graphical representation by the front panel faders of the actual frequency response.