Behringer BDI21 Bass Amp Modeler Direct Recording Preamp DI Box

The Behringer BDI21 is an analog bass amp modeler and direct recording preamp designed to deliver classic bass amplifier tones in a compact stompbox format. Built with Behringer’s V-TONE modeling technology, the BDI21 recreates the character of vintage tube amplifiers, modern bass rigs, and overdriven tones, allowing bass players to shape their sound for stage or studio.

The unit functions as both a tone-shaping preamp and a professional direct injection box. Musicians can send a balanced XLR signal directly to mixers, recording interfaces, or PA systems while simultaneously using the 1/4-inch output for an amplifier. The blend control allows the modeled tube tone to be mixed with the clean bass signal, delivering precise tonal control.

With dedicated Presence, Bass, and Treble controls, the BDI21 provides flexible EQ tailored specifically for bass guitar. Whether used for direct recording, live performance, or tone sculpting on a pedalboard, the BDI21 offers versatile bass tone shaping with reliable connectivity.

Key Features

• Analog Bass Amp Modeling: V-TONE modeling recreates vintage tube amps, modern tones, slap bass sounds, and distortion
• Direct Recording Output: Built-in DI output allows direct connection to mixers and recording systems
• Blend Control: Mix tube emulation circuitry with the direct bass signal for precise tone shaping
• 2-Band Bass EQ: Musical Bass and Treble controls specifically tuned for bass guitar
• Presence Control: Adds definition and upper harmonic detail to the sound
• Dual DI Modes: Use modeled output or operate as a standard active DI box in bypass
• Multiple Output Options: 1/4-inch TS output and balanced gold-plated XLR DI output
• Ground Lift Switch: Helps eliminate ground loop noise in live and studio setups
• Flexible Power Options: Operates using a 9 V battery or Behringer PSU-SB DC power supply (not included)

Technical Specifications