Symetrix SX201 3-band parametric equalizer. Excellent cosmetic condition. There is a small amount of static with the in/out button, but the unit is fully functional and sounds good.

Bandwidth per band: 0.5 to 3.3 octaves, 3 bands (low, mid, high). It is noteworthy that the low band reaches down to 16hz—great for boosting subsonic frequencies such as 32' organ stops, but also suitable for home theatre subwoofers or other low frequency applications.

See photos.