The 1604VLZ is still very much a general‑purpose mixer, with 16 mono mic/line channels and four stereo effects returns, but unlike its VLZ‑less forebear, the VLZ version now has true 4‑buss routing in addition to L‑R routing. Faders are used to control the channel gains, the four buss output levels and the main stereo output. Each channel sports a switchable 75Hz, 18dB/octave, low‑cut filter, as well as a TRS jack insert point.