Feature:1. FOR PRACTICING, PLAYING AND RECORDING: Bass guitar preamplifier DI box, with impulse response (IR) loader and audio interface for practicing, playing and recording in the box2. 3 BAND EQUALIZER: 3 band equalizer with IF selector, provide driving hybrid control, useful and practical3. NOISE REDUCTION: Built in noise reduction function, XLR DI output, noise level is 93dBu (A weighted), bring good sound quality4. MICRO B USB INPUT: Micro B USB input for firmware update, software control, infrared loading and audio streaming5. STURDY AND DURABLE: Bass preamp adopt good quality metal material, easy to conduct electricity, shiny, sturdy and durableSpecification:Item Type: Bass PreampMaterial: MetalColour: BlackSampling Frequency: 48KHzA or D Conversion Accuracy: 32 BitsSignal Processing Accuracy: 32 BitsFrequency Response Range: 20Hz~20KHz - 1dBNoise Level: -93dBu(A weighted)Dynamic Range: 100dBMaximum Input: +14dBuMaximum Output: +14dBuEQ Control: The preamp mode is MLD preamp mode enabled by defaultLow frequency 12dB at 40HzIF 17dB at 160Hz~1000HzFrequency sweep 160Hz~1000HzHigh frequency 12dB at 8000HzProduct Power Supply: 9V DC external positive and internal negative(not included).Package List:1 x Bass Preamp1 x User Manual