Any kind person have a link to where the Master Coupler is $250? Everything I've found searching online appears to be $500 plus and used...
Wow. I paid $175 for mine, but that was back around 1993 when full retail was around $300. I saw ones a while back on here which is where I got my figures from, but I'm not really in the market. The $500 may have been the Anniversary Edition. I know the original Master Couplers like mine are really good. Not that hyped hifi sound that is so common, but truly well-balanced. Not as good as newer Synergistic but awfully good compared to just about anything else.
At $500, if it was me, I'd start looking at whatever newer Synergistic that would get me. Even back in the day, I have Synergistic Designers Reference which for sure is a whole lot better. Also for sure their newer is better. Synergistic is unique in this regard. Its simply a question of price.
Take your time, keep looking, and give serious consideration to anything Synergistic around $500, be it Blue tech or CTS or Active or whatever. The downside of Active, some of them depending on when they were made used MPC wall warts. Some don't care for the extra wires. But the neat thing about Active Shielding, Michael Spallone does a killer cap and diode upgrade that elevates everything to an even higher level.
If all else fails PM me, I'll sell you one of mine, use the $$ to upgrade to even better SR.