Synthroek's new mixer module is a three-channel mixer which is suitable for simple audio mixers or small drum setups and fits into any gap with a narrow 2 TE. Due to its passive design, it does not have a reinforcing effect but rather a compensating effect on stresses. To prevent unwanted attenuation, set the unneeded channel to zero.
Synthrotek MIXNothing fancy here. Good for the price but be aware it does reduce your the signals gain/volume of your input. Still, it does not take up an extra power sloth and for the price it's hard be too critical.