Kind of odd that in almost 1000 posts, no one has mentioned their results from installing a Pinsound. Funhouse is the only game so far to receive a complete sound makeover from Pinsound and they offer 3 varieties currently:
1) the original sound/callouts - these sound better on the Pinsound as the electronics are far superior to a stock game - more amplifier, treble/bass controls, separate cab/backbox volumes, no hissing/popping/buzzing, etc. Combined with an external subwoofer, this is a very nice improvement over the original sound board.
2) the "enhanced" version - basically new callouts and the original music REMASTERED in glorious hifi. The new remastered music is nothing short of phenomenal - no compression artifacts, better highs, better lows. It really modernizes the game and makes it feel brand new. The callouts are re-recorded and sound much cleaner - but it's not the same voice as the original. He does a good job, but I still kind of prefer the original as that's what I'm used to. I will say it does grow on you though.
3) the "ultimate" version - a complete new soundtrack along with the re-recorded callouts. To be honest, I wasn't blown away with the demo video on their website initially. I also played it at TPF and just didn't get far enough into the game and it was still hard to hear with the headphones. HOWEVER - after trying it out at home, I can say I really like it. It has a European feel to it which is fun. The sleep music, the 11:45 music, the jackpot music and the game over music are awesome. There are several tracks - quick 2 ball and superdog that made me laugh out loud. In short, well worth the $10 if you plan on installing the Pinsound. It's certainly the best Pinsound remix on the market.
x) the "missing" version - I asked Nicolas at TPF why they didn't release a version with the remastered music and the original callouts. This IMO would be the best of both worlds - the original music in hifi and the original Rudy (albeit compressed Low FI). He said this is entirely possible and on his list of things to do, but it hasn't showed up yet on the website.
In the end, I'm happy I gave it a spin and it will stay in my Funhouse permanently - thanks Pinsound guys!