These are like vintage Boss Pedals in that they are "ACA" setup (12v power/9v battery). This has been converted to run like normal 9vDC PSA Power.

Parametric EQ pedal is a vintage guitar effect pedal from Japan, designed for precise tone shaping. It features:

Parametric EQ capabilities with adjustable frequency, Q, and level controls for detailed sound sculpting. 

A sustain/compressor function that allows for control over sustain and tone clarity.

A compact design suitable for pedalboard use, making it versatile for both live and studio applications.

This pedal is ideal for guitarists seeking to enhance their sound with meticulous control over frequencies and sustain. 

This is similar to older Boss ACA pedals in that they are better off with a 12v adapter, or 9v battery, a 9v adapter isn't enough power and the light will be dim and not give the full chorus effect.  THIS PEDAL HAS BEEN CONVERTED TO RUN PROPERLY ON REGULAR 9vDC SPEC

Check out my other listings for more cool vintage, boutique, Arion, Equalizer, and other guitar pedals! Any other pictures needed or questions please ask!