Olson HF-176 Stereo Frequency Response Controller EQ Coppia Testato Pulito Giappone

Olson HF-176 Pair — tested and working beautifully. ☆ Verified tested: passes signal, EQ sliders affect response as intended. ~ Anyone building a period-correct 1970s hi-fi setup. ☆ Made in Japan — excellent build quality and warm, musical tonal character.

eBay