Гитарный эффект BEHRINGER PREAMP BOOSTER PB100 - YouTube
Four Behringer guitar effects pedals to include a PB100 Preamp Booster, a BEQ700 Bass Graphic Equalizer, a DR100 Digital Reverb and a UC100 Ultra Chorus
User manual Behringer Preamp Booster PB100 (English - 2 pages)
Behringer PB100 Preamp Booster Pedal - Evolution Music