NUX Melvin Lee Davis NBP-5 Dual Switch Bass Pedal Bass Preamp,DI box,Impulse Response (IR) Loader,Audio Interface in one - A bass guitar preamp, DI box, impulse response (IR) loader and audio interface for practicing, gigging and recording is in one Closer Look NBP-5 Bass Preamp + DI features fully sweepable mid-range frequencies in addition to Bass and Treble controls. Melvin L. Davis is proficient at 4, 5, 6 and 7 string basses, so, MLD Bass Preamp has a wide range of frequency control. Volume Knob Adjusts the overall output volume of the pedal. Ideal for fine-tuning the output on clean tone, it also controls the DI output volume. Blend Knob Adjusts to blend between the clean signal and overdrive signal. The clean signal remains as unity gain, allowing for fine control of the blend ration. Drive Knob Adjusts the Gain level and sets the saturation level in the overdriven signal. 3-Band Equalizer with Middle Frequency Selector Bass : +/- 12dB @40Hz Middle : +/- 17dB @160Hz to 1000Hz Freq. : 160Hz ~ 1000Hz Treble : +/- 12dB @8000Hz. DI Output Balanced XLR Output carrying the mic-level output signal, either affected or unaffected depending on the Pre-Post switch. GND LFT (Ground / Lift) Toggle Switch Disconnects the signal ground on the DI out to break any ground loops. Toggle the switch to the LESS noisy position; it can be either GND or LFT depending on the room, stage or studio condition. Switch does not effect the 1/4-inch (6.5mm) output. Impulse Response (IR) Toggle Switches You can activate/deactivate the IR cabinet simulation for both DI out and 1/4-inch (6.5mm) out separately. Use the appropriate IR toggle switch to turn ON/OFF the emulation for the output you choose. Input/Output and USB Connections Main OUT and Through You can use the main "OUT" and "THROUGH" output to get the dry signal for bass amplifier connection. When you activate the "OUT IR" cabinet simulation, you can connect the pedal to any FRFR speaker, directly to a mixer or audio interface. "THROUGH" output will remain bypassed either the "OUT IR" is activated or deactivated. .DI Out, Auxiliary Input and Headphone Output On the LEFT SIDE of the PEDAL, you can access the XLR output for a mixer and/or audio interface connection, and you have the option of activating the IR cabinet simulation. There is a 1/8-inch (3.5mm) auxiliary input to connect a music player, and headphones output for silent practicing or monitoring (please check the USB connection). Headphone output is related to DI out, when you activate the DI IR simulation, headphones output will be simulated.NUX Bass Preamp + DI Software You can connect the pedal to your Windows / MAC computer to use the editor software. You can load your own IR files and control various other settings. Supported IR file: 48 kHz / 24-bit, 1024 Samples Bass Amplifier Models Bass Preamp + DI pedal comes with 2 amplifier models, you can select and control the amps and the Noise Reduction on the software easily. Speaker Cabinet Models (IR) There are 8 IR presets (4 factory / 4 user) in the Melvin Lee Davis Bass Preamp + DI, and the pedal comes with the selection of speaker cabinet IR files created by NUX. Also there is an independent volume control for the cabinet simulation to adjust the IR level. Recording With Melvin Lee Davis Bass Preamp You can record your bass guitar without using any audio interface. MLD Bass Preamp + DI has a built-in audio streaming function, so you can connect the pedal directly to your computer with a Micro B USB cable, and it is ready to play and record. A driver free* solution that helps you to produce music with direct connection. You can use the headphones output for monitoring, you will hear both your guitar and the audio from your computer.