Maestro (effects) Phasers & Shifters for sale in Canada

At least 4 Reverb results for Maestro octave and pitch effects
Maestro OB-2 70’s for sale

Maestro OB-2 70’s

Maestro Octave Box 1974 for sale

Maestro Octave Box 1974

At least 4 eBay results for Maestro octave and pitch effects