Going to be selling the bass soon, need to know what preamp this is, and what the pickups are. The controls are Volume, Pan (or blend however you want to call it), Bass/Treble. There is no push pull. I think it's a Bartolini NT something? The trim pot covers the model designation but I can see that it starts with an "N". I've seen a few Bartolini preamps that are NTXX-XXX but you can clearly tell that this is most likely a 4 letter model, with no numbers following. Any help would be appreciated! Thanks!