Equalization (or EQ) refers to the adjustment of audio frequencies produced by guitars, which can either be cut or boosted to reduce or increase the presence of a specific frequency or frequency band. This is usually done to improve the audio aesthetics of synth sounds.
EQ may also be used to eliminate or reduce unwanted sounds and transients, and altering EQ is a good way to adjust the timbre of the synth patch by modifying the substance of its frequencies. This can furthermore assist in fitting the guitar tracks within the sonic spectrum and overall context of the mix.
Depending on the objective of the project, different EQ units will deliver different tones and character to synth tracks.
Some popular choices include:
Stereo Synthesizers are often best EQed in stereo pairs. For this we love the SPl Passeq or a Millenia NSEQ 2. If more substance is needed, Neve 1073s are great at slowing down frequency changes on the top end without losing brightness.
Other good options include: