4 in, 4 out mixer multiple

b:14 is a precision utility module that takes up to four input signals, mixes them together, and distributes the result across four identical buffered outputs. Built around the OPA1678 op-amp, it offers exceptional precision - suitable for any signals from audio to sensitive pitch CV. A rear jumper sets the mixing stage gain, making it adaptable to your specific use case.

https://bartinstruments.com/products/b-14