HQPlayer doesn’t have a simple graphic EQ. Instead, it offers a high-quality parametric EQ as part of its PCM filters pipeline (not applicable to DSD directly without conversion). It’s exceptionally transparent due to HQPlayer’s 64/80-bit floating-point processing.
This lets you, for example, de-ess only the center vocal without affecting stereo reverb. This is studio-grade processing that few consumer players offer.
While not the "equalizer" per se, HQPlayer also supports convolution (impulse response .WAV files). This is more CPU-intensive but allows for mixed-phase correction.