As a company that repairs vintage electronics we often run into the problem of finding quality replacements for discontinued ICs. Third-party companies will often make reproductions for popular chips but for the less common chips we’re on our own to find a suitable replacement. The NE5554N is a dual polarity voltage regulator used in older EHX pedals like the Micro Synthesizer and Memory Man. We made a PCB replacement using surface mount voltage regulators and utilize the PCB as a heatsink. This provides better heat dissipation as the stock chip (and suitable replacements) will heat up under use. These boards are NOT for sale; we exclusively use them in our repairs.