Thank you for viewing. The PG-10 is a compact amplifier for guitar and bass, with adjustable sound quality. - Model: PG-10 - Brand: Photogenic - Function: Guitar & Bass Amplifier - Controls: INPUT, GAIN, LEVEL, BASS, TREBLE, AUX IN - Power: ON/OFF switch Currently, there is no scratchiness or noise. It was used indoors, mainly for guitar and bass repair and inspection. It is also ideal for home practice. I am selling it to organize my equipment. Thank you.