Vintage equipment sounds awesome

Well I just replaced all the "REL CAP"s and the filter caps with new ones in my Audio Research SP10 pre amp as the old one were over 30 years old and I have to say on first impression there is a bit more detail and depth to the instruments especially the ones in the background. I will start replacing the tubes (6922) when they come available.

I totally agree that going back 30 or more years will get you better sound my best sound that i have ever obtained are with the designs that were made in the fifties when they say golden age of high fidelity they meant it. You will discover a whole new level of music you never knew was even there on true full range full dynamic systems and rediscover your entire music collection.

Read opinions on McIntosh Mc 30 mono amps for years, finally found a pair of mint Mc 30's in mint condition with quality tubes. I have been in Audio heaven for the past year especially since I acquired a Mac C20 preamp within 45 days of picking up my Mc30's. 

I listen to a Sota Sapphire through pair of Nola Boxer S2's on Sound Anchor stands. My late 60's rock and especially my jazz of the 50's makes my analog listening a true joy.

Started my serious audio system in1978 with Van Alstine  preamp, Gas Grandson and Cizek speakers, then Bryston & Kef 105's in 1989 when I acquired my Sota

I have listened to tube amps and preamps at shops and friends home but to me the McIntosh Mc 30 and C20 have ended my search for what to me is the most natural sound reproduction. 

I recommend everyone try glass amplification.  If I ever down size Would look at Van Alstine tubed preamp and ST 70 amp 

Well I finally changed some tubes in the Audio Research SP-10 power supply (6L6WGC and a 12AT7) and the four pre amp tubes in the line drive section of the pre amp. I got to say Holy Crap! What a change in the sound field that my system produces. The depth and presence of the music has increased along with the detail that is now more present than before. The bass and treble have improved as well, also the nuances that I did not really hear before are there as well. Most of this is I believe is due to the fact that one of the line drive tubes showed a shorted condition on my B&K tube tester and one other showed weak, the other two tubes checked ok, but by replacing all four with better tubes (7308 vs 6DJ8) I have taken my vintage equipment to a new level and as I stated earlier I did replace a lot of capacitors with new original ones from the manufacture. And just prior to this there is that one time you listen to your system as it finally "breaks in" I am hopeful that after these new tubes break in that I will experience that again. Listening to some of my music it really moves you to tears on how much enjoyment and pleasure and that your hard work pays off in this endeavor and made it all with while. Happy listening. I know I will!

@hoghead1  Tube rolling is where it's at. I swapped the power tubes in a power supply and it is night and day. 
You might try new Tung Sol 7581A in place of the 6L6GC.