Multifunctional bass preamp with sound quality adjustment. - Model Name: Amethyst Preamp - Brand: Floatia Designs - Controls: Bass, Mid Freq, Middle, Treble, Drive, Gain, Output, Deep - Serial Number: G2412 Thank you for viewing. Purchased in March of this year and used approximately 3-4 times in live performances and studio rehearsals. There is a slight scratch on the right side. Please consider purchasing with the understanding that this is a used item. Operation confirmed, no noise.