From the Manufacturer: A shade larger than the UB502, the Behringer Eurorack UB802 features 2 INVISIBLE MIC PREAMPs (IMPs), 6 balanced high-headroom line inputs, and 1 post-fader FX send per channel for external FX devices, along with 1 stereo aux return for FX applications or as a separate stereo input. It also includes an effective, extremely musical 3-band EQ on all channels. The UB802 is well-suited for use with fixed audio and video installations, keyboards, samplers, and computer applications.