24-channel Premium Analog Mixer with 20 Onyx Mic Preamps, 4-band Perkins EQ, and Compressor/Limiter. Mackie's Onyx 24x4 analog live mixer offers nightclubs, bands, and houses of worship a console that doesn't force them to sacrifice channel count or sound quality when looking for a mid-sized analog console. Mackie's flagship Onyx 4-Bus Series live sound consoles upgrade the performance and functionality of the legendary Mackie SR24•4 and 24•4 while adding 100mm Panasonic faders, 20 Onyx mic preamps, redesigned analog circuitry, Perkins EQ, and a built-in assignable stereo compressor/limiter sectio