This looks like an early, 2 module NTMB preamp. If your bass still has the early drop shoulder spec duals, mating them to a TCT will get that bass the closest you can get it back to the Hollywood era sound. The biggest thing missing is the Tobias specific mid module that was used for the Tobias TCT circuit. It allowed much more tunability to the mid boost including being able to set how far the bottom of the boost shelf reached into the low mids, as well as creating a tuneable, separate treble boost shelf controlled by the mid knob. You can achieve the treble boost tuneability if you use the 3MC 3 way mid module that has the stock 2K-15K treble circuit separated which means you can bypass it and create your own/one more like the Tobias circuit.