Aw, shucks, nobody is selling one of these today.
Sell One Like This
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The Purple Audio ODD is a 500 Series equalizer with 4 bands, based on older "Swinging Inputs" EQ designs used by Altec and Auditronics. The ODD uses discrete circuitry with transformer I/O and inductors for each selectable frequency, and switchable high-pass and low-pass filters.
Pricing here is for a pair of ODD EQs.