Usually 3-5 Days. 45 Day Lowest Price - 100% Satisfaction Guarantee. The Furman Q1311 is a single channel 31 band graphic EQ designed for use by live sound engineers, recording studios, and musicians. This unit features constant Q circuitry with 4% center frequency accuracy. It comes equipped with 1/4" TRS and XLR balanced inputs/outputs, and RCA unbalanced inputs/outputs for the flexibility to interface with a variety of systems.