“Oppomod” linear power supply

@ptss
Yes, you can clearly hear the difference even with excellent conditioning and ancillary components.  With my 203, I'm using a Shunyata 6000/S line conditioner, VH Audio Airsine PC, MIT Oracle digital cable to my EMM Labs DA2 DAC and the unit is sitting on four HRS Nimbus Assemblies, and the difference between the stock SPS and a LPS was pretty amazing.  Not only improved audio - particularly a huge drop in the noise floor and removing glare, but also a more natural presentation of video for BDs. 

I wasn't really sold on that Oppo mod LPS given that it had no heat spreader and was way more expensive than other models without explaining why.  Since I only use the 203 for BR, I got a digital only LPS and disconnected the analog board (which also helps).  The LPS cost around $150 on ebay and is amazing.  No complaints.  I ended up also changing the IEC and internal cabling of the 203 which brought further improvements but the LPS was the game changer.

@bar81 . Thanks for input. I believe the investment in ac power conditioning is extremely worthwhile. Enjoy the music! 

@bar81. I was looking at the MIT Cables site today and noticed they’ve gone to very aggressive power conditioning units.$$$.  To me this validates the benefits of power conditioning in our ever noisier digital environment, as you and I have experienced. I will definitely go to a linear power supply if for no other reason than to eliminate the noise emitted by the smps. Just evaluating options. 

I found a Pioneer PL-71 at a second-hand shop for $12 (this was probably during the 1990s).  This was Pioneer's top-of-the-line TT in 1974 retailing at about $300.   Like a dumbbell I offered it to my friend and like a true friend he turned it down, so I bought it.   And am I ever glad I did!  It wasn't holding its speed very well, but after replacing a micro-switch and cleaning the speed adjustment pots, it worked great.  I had to buy the lateral balancer for it because that was missing.  I replaced the cheezy hardboard bottom with a massive aluminum plate (designed specifically for it... bought on eBay).  I put a Grado Red on it and it sounds great!   And it's beautiful to boot.  I LOVE my vintage TT.  I read a review that said you'd have to spend way upwards of $1000 on a new TT to get one that approaches its quality.  And that was 20+ years ago.  I have no interest in spending huge dollars on a modern TT when I have a beauty that sounds fabulous.