I purchased this new at a Shimamura Music store on September 10th of this year. The warranty still has about 9 months remaining. I used this with an acoustic guitar, not a bass. Although there are guitar-specific versions, after comparing them, the bass version, with its heavy and wide-ranging sound, was overwhelmingly better for acoustic guitars. The toggle switch can also be used as an EQ. There are some scratches, but there are no problems with its use. It is fully functional. Thank you. A Canadian-made bass compressor with versatile controls. - Brand: #EmpressEffects - Model Name: #Compressor Bass - Color: Blue Sparkle - Function: Bass Compressor - Controls: Attack, Release, Mix, Ratio, Tone, Colour - Country of Manufacture: Made in Canada - Serial Number: 7273 Thank you for looking. #AcousticGuitar #Compressor #Empress