※ This product is a non-working, junk item. ※ Please bid only if you understand the above. This is a YAMAHA Q2031A graphic equalizer, a legendary model. It features 31 bands for fine adjustments, 2 channels, balanced input/output, a high-pass filter, and is a studio/live house quality equalizer. In my use, it powers on, but no sound was produced. As I am a novice, I did not use a microphone preamplifier, etc., so it's possible I used it incorrectly. Please use it as a junk item for parts, etc. Please understand the above, and no claims or returns are accepted. Also, due to its size, it will be shipped via standard Kuroneko Yamato (Yamato Transport) service. High-performance graphic equalizer made by YAMAHA, supports 2 channels, equipped with XLR and TRS input/output terminals, and features a frequency response display. - Brand: YAMAHA - Model Name: Graphic Equalizer - Input Terminals: XLR, TRS - Output Terminals: XLR, TRS - Slope Characteristics: Frequency Response Display - Number of Channels: 2 channels Thank you for viewing.