Buff'N Boost is a signal booster, 26 dB of max gain, (up to 20dB without compression or distortion) totally transparent on signal. Allowed to buffer ( high inpedance, low inpedance conversion) guitar signal, and to boost it. Positioned in front of amp allows to increase volume and natural saturation. Positioned in effect loop allows to increase natural volume of amp. Powered up to 24 VDC for maximun headroom