Bluetone OD overdrive+clean boost pedal is based on modified Tubescreamer circuit and to our own design. This device is very versatile producing clean boost/overdrive and distortion from old school to modern style. It works with 9-18 VDC (centre negative).
Unit price 320 €. (including 25,5 % VAT)
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https://www.youtube.com/watch?v=z5boNAmm_8E