You asked and Lindell answered! The MID-500 is a classic passive equalizer and was created to satisfy the requests of Lindell's loyal users. Based on the Pulteq MEQ-5 filters, the MID-500 is completely discrete and uses hand-wound transformers, inductors, capacitors and transistors in the signal chain for an exceedingly classy sound.
Based on the classic Pultec MEQ-5 mid-band EQ, the MID-500 500-Series Passive EQ provides 3 bands of equalization centered on a selectable mid-frequency dip. It’s construction includes hand-wound transformers, inductors, capacitors, and transistors all geared towards supplying a vintage tone reminiscent of the MEQ-5.