DOD 240 Resistance Mixer, which mixes four inputs, The color is metallic blue. Made in the USA, so the manufacturing technology is different. Made in USA There is some crackling. I don't think it's too noticeable. Model name: DOD 240 Resistance Mixer - Output terminals: 1 output terminal - Input terminals: 4 input terminals - Number of knobs: 4 adjustment knobs - Color: Metallic blue Thank you for viewing.