Rio - Germanium Treble Booster

Handmade boutique germanium treble to full frequency booster.

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Made to order item. Will be shipped 3-7 days after order.

Currently available with NOS Tungsram OC44K or OC1044 germanium transistor. Tagboard construction. Neutrik jacks, Dailywell foot switch. 

The controls:

• Boost: the amount of boost from low to full
• Range (knob option): Clockwise acts like a Treble Booster. Anti clockwise acts like a full frequency booster
• Switch (3 way) option: middle is treble boost. Right is mid boost. Left is full boost

Matt black Powder coated aluminum 125B size die-cast box. True bypass. Operates on 9V battery or center negative power supply. Positive ground circuit, please use isolated power supply, DO NOT DAISY CHAIN! Hand built in Hungary (European Union).