Befaco Mixer V2.4

Four-channel active mixer with LED output monitoring

5 HP Eurorack module

The Befaco Mixer V2.4 is a compact four-channel passive-style active mixer for Eurorack, summing up to four audio or CV signals into a single mixed output with individual volume control per channel. Its simple, clean signal path and LED output indicator make it a transparent and musically neutral utility workhorse suited to any genre or patching style.

Features

• Four independent input channels with individual volume potentiometers
• Single mixed output summing all four channels
• Duo LED output level indicator
• TL072 op-amp based active summing
• 2N3906 and 2N3904 transistors for LED drive circuitry
• Ferrite bead power filtering on both supply rails
• Reverse polarity protection diodes on power input (1N5817)
• Standard Eurorack 10-pin power connector with keyed orientation
• Mini-jack inputs and output
• Suitable for both audio and CV mixing

Controls & Jacks (12)

• Channel 1 Volume— Volume control for channel 1 input
• Channel 2 Volume— Volume control for channel 2 input
• Channel 3 Volume— Volume control for channel 3 input
• Channel 4 Volume— Volume control for channel 4 input
• Mixed Output— Summed output of all four channels
• Output LED— Indicates output signal level
• Channel 2 Input 1 audio— Audio input for channel 1
• Channel 4 Input 1— Audio input for channel 2
• Channel 3 Input 2— Audio input for channel 3
• Channel 1 Input 2— Audio input for channel 4
• Output LED— output null
• ctrl_011

How-To Guides

• Basic Four-Channel Audio Mix
• CV Offset and Attenuation Mixing
• Drum Bus Submix
• Layered Oscillator Blend
• Performance Live Muting
• Feedback Loop Mixer
• LFO-Driven Morph Between Sources
• Parallel Filter Blend
• Generative Random Voltage Blending

Explore the interactive Mixer V2.4 panel on BleepDex — tap any control to learn what it does.