Slowhand,What a brute of a c.d. player the SCD1 is.55 lbs? I bought the 777 shortly after they came on the market back in 2000 and had it modded afew years later.The 777 was my first c.d. player ever. It sure was dark days for vinyl back in the 90s .Have you tried rollerblocks under your SCD1? Put them near the transport,its amazing what they do for a c.d. player.....Last time I checked going prices for certain vintage tubes ,I put mine away in a safer place.Back in the 90s the most expensive vintage vacuum tubes I bought was CRAZY money,around $60.00 for a pair of Sylvania metal base 6SN7s.The tube and parts dealer saw me coming. I couldn't tell you what going prices for any of the vintage Western Electric vacuum tubes were going for. Someone mentioned here apair of W.E. 350Bs were $400.00 apair.I think hes wrong,400 for a single tube, if it test new. Tube rolling with vintage vacuum tubes will change the sound of your Supratek pre.Thats for sure. Though certainly not for the better.If you have money to burn on vintage tubes, slow down, this money for sure is better spent in other areas of your system.Have your c.d. player modded and buy some rollerblocks to go with it. Have your tonearm rewired and carry on with the same wire through out your system. Try out some decent a.c. distribution through out your system,all from the same manufacture. Anyone of these steps will have a profound effect.