Custom Circuits (JM-SAmp) Summing Amp mounted on a Tascam 5A Mixer (JM-150-B2) Mic pre with Phase reverse, Balanced Output, can be mounted in a Tascam 5 Mixer or 500 series Lunch Box module (JM-H.P.F.) Dual Channel H.P.F., can be mounted in a Tascam 5 Mixer Unbalanced Line Input Preamp Pricing coming soon.