I was talking w/ a guy who works at a local music store about the infamous Spector Tone Pump - specifically, how he likes it & how I'm not so crazy about it. He said he had performed the infamous 'Tone Dump' by switching to the BQC System, but ended up preferring the Tone Pump sound & swapping it back in, thus leaving the BQC preamp sitting in his drawer at home. I asked him if he'd be willing to sell it. He said he would... for $50! The next day, he brought it to work with him, I brought the cash... sold. Looking it over, everything seems to be there (it's a 4 knob configuration), however in some photos I've seen the system has two circuit boards (one big, one smaller), while the system I just bought only has the bigger of the two. Am I just misinformed or should I asking this guy for the remaining piece of the puzzle? Thanks in advance for any help/info you can provide me with!