In the eight years since I purchased this Cary SLP 05 tube preamp new, I have implemented many different enhancements and upgrades which have resulted in a preamp that outperforms anything I have heard under $15k. This preamp has been professionally upgraded to provide vastly superior performance to the stock unit. The upgrade was done by ASi Teknologies shortly after purchase and they are still doing Cary SLP 05 mods, check out their web site. As a stock unit, the Cary was very good but was overall brighter sounding than I thought it should be. I'm a big fan of all George Cardas' products, so I had all the major capacitors in the unit replaced with Cardas Golden Caps and had the original main signal path wiring replaced with Cardas, see pics. There were also modifications made to the power supply, where Rubicon caps were substituted for the cheaper stock ones and the stock 5AR4 tube was replaced with an Amperex branded Mullard from the 1960's - arguably the best 5AR4 variant ever made. This custom mod cost more than$1,500, not including the tube, and made a huge difference in the sound quality, providing smoother highs, better bass and a wider deeper more holographic soundstage. The Cary SLP 05 responds well to many other less drastic tweeks, so I also replaced the two mains fuses, eventually settling on the Hi-Fi Tuning Premium Black fuses. I will include the Hi-Fi and two Silver Star fuses which The Hi-Fi Tuning replaced. I also added Black Diamond Racing Carbon cone feet and footers for vibration control, all of which will be included. One of the coolest aspects of the Cary SLP 05 is the ease in which "tube rolling"can be accomplished, since the tubes are exposed. After rolling six times, I settled on the Sophia Electric 6SN7 variant but I am including five sets of the 6SN7 tubes that I tried, since my new preamp uses different tubes!!! Included will be the original eight Electro Harmonix and six matched sets each of: Shuguang Black Treasure, GE's from the 1960's, new Tung Sol Reissues, Sophia Electrics as well as the stock and upgraded 5AR4 power tubes and Herbie's Audio tube dampers. Finally, the Cary requires a good power cord to sound it's best, so I am including an original Cardas Golden Cross 2M power cable. So, what you get if you purchase this package is: a well cared for Cary SLP 05 in perfect cosmetic and working condition, with all original packaging, cables and remote, FIVE!!! sets of high quality 6SN7 tubes with low usage, two sets of high end fuses, a top of the line Cardas power cord and two sets of carbon fiber cone footers with bases. What this package breaks down to is a Cary SLP 05 for half original retail price, a custom $1,500 professional upgrade and ~$2500 of extras to tune the preamp to exactly suit your needs. The reason I'm selling is that I'm starting this process all over again with a new McIntosh C1100 - don't you love this hobby! I'm paying the shipping to the buyer in the lower 48 also; buyer pays any PayPal or other fees.