Leaderboard

Just thought I'd throw this out there for those who have yet to source that rare sand for their T2's. This could be worthwhile, as I dropped a little over $200 with B&D recently for discontinued transistors. B&D is having a "summer sale" until August 31. 10% off and free shipping in the CONUS. Minimum order is $100 to qualify, use souce code: "cooldown" at checkout. www.bdent.com

Actually unlike the quantum purifiers which do jack shit, this thing actually does something. And that something could be very bad. Notice the .5 to 2.1 volts of input to output differential. If you put these things on a dynahi, dynafet, or B22 you will absolutely kill the effect of the dual tracking power supply, deliberately offset the rails, and probably force the servo to clip in one or the other direction. Now do i believe the 45db of noise reduction... Nope, in testing a few of the possible circuits, maybe 10db at most, and only when you put such a device between the unregulated voltages and the rest of everything else. At which point with a well regulated power supply you can't tell the difference between the thing in and out of circuit. But wait there is more. Lets say you are dumb enough to put this on say a kgsshv power supply, or something (anything) else that is 450 Volts. Do a quick calculation. The R1+R2 load resistor eat up 7 watts (which would be 14 watts total for a dual supply) plus the power in the zeners, say 18 watts total. 33% more power all going directly into heat including the extra power the supply has to generate to light the thing up. In fact a number of tube preamps and small tube otl amplifiers with tube diode power supplys, are unlikely to be able to supply the additional power to light this stupid thing up. Yep, another quality product from jack bybee. But i notice a new difference too, bybeelabs.com and bybeetech.com Each selling different products. I wonder what that is all about.