The Rane ME15S Micrographic Equalizer is a two-channel, 2/3-octave design with 20 mm sliders in a single rack space unit. It features a range switch for high slider resolution in the ±6 dB mode - equivalent resolution to 45 mm sliders found on double rack-space models. The ±12 dB mode provides a wide range of control over system audio. The active filter sections feature Rane’s innovative constant-Q (constant bandwidth) design. Constant-Q means the bandwidth of each individual filter is guaranteed to be narrow enough to prevent unwarranted interaction between filters, yet wide enough to produce exactly the type of correction curve demanded by even the most unusual acoustic surroundings.