I have been hunting for a low noise 12v power adapter with a negative barrel center for a long time. Up until now the best solution for someone looking to power their Op-2 Comp off a single wall adapter (not a multi-pedal supply) has been the TC Electronic adapter we have been offering. I was not entirely satisfied with the noise performance of this adapter, but it was better than average. The main reason I had to look harder is because one customer had a problem with their TC adapter not working sometimes. Lightning Boy can not back a shoddy product and thankfully we don't have to thanks to the new adapter option I'm about to tell you about. We're now offering a new adapter for sale with or separate from the Op-2 Comp. This 12v adapter was designed for computer applications, so it has super low noise. The main problem with adapters like that is the barrel jack's center is positive. To remedy this, we are including a polarity reversal adapter jack that plugs onto the DC barrel jack of the power adapter. The combo ships together for one price of $24.95 USD. I'm happy to say I finally found a low priced low noise 12v solution for Op-2 Comp. This power supply offers a whopping 2A of current. Its plenty of juice if you wanted to daisy chain a few 12V tube pedals off one low noise supply.
About the Author
Mike Congilosi II, Owner/Designer/Electronics Engineer at Lightning Boy Audio and Owner/Audio Engineer/Music Producer at LBA Studios.