Tube life


Greetings,

Wondering if my tubes or my hearing’s going. Feeling my system should sound better. Bought  Vandersteen Quatros 2 months ago and believe I've got them dialed in fairly well. I include this because I don't have years of listening to them to compare back to. Have to turn my CJ Premier 16 pre to about 43 to get a decent amount of sound. These Quatros replaced Tannoy Kensingtons that only needed a volume setting of 32 for a decent amount of sound.

System is:  

• Pre:   Conrad Johnson Premier 16LS
• Pwr:   Conrad Johnson Premier 12 Mono Blocks
• Pwr Condtnr: Shunyata Hydra
• Speakers: Vandersteen Quatros
• Cabeling: Stealth PGS IC’s, Vandenhull Bi-wire Speaker wiring
• Sources: Conrad Johnson DV-2B CD Player, SOTA Star w/SME arm w/Benz cart, Magnum Dynalab Tube Tun
• Music:   Classic Rock, Easy listening, Female Jazz singers, Classical
• Room:   Big (25 X 30) w/cathedral ceiling. Harwood floors/ceiling and big glass windows. Rugs and furniture

Replaced all unit's tubes 5 years ago and bought them all from Conrad Johnson. Play the system about 10 hours a week so that would be about 2600 hours of play.

Think the tubes have seen their better days? My hearing? I'm 56...

Thank you!


rbschauman

Showing 2 responses by oddiofyl

The problem with tubes is they slowly degrade.     I recently purchased new speakers and they didn't really sound like they did in the showroom.....   At first I attributed it to break in , which I think in all honestly is more of your ears acclimating to a different sonic signature.   But then I thought , how many hours are on these tubes?  So I retubed and what a difference.   Not that it sounded horrible , but it was lacking dynamics and sounded recessed.    Things really opened up with new EL34s.  I would estimate they had about 2500 or more hours.  I listen a lot , music , tv, and movies.   For NOS tubes , Brent Jesse is a good source.   For current production I would suggest Jim Mc Shane for the simple reason that your amps use four tubes each.   He is reputable and will send you 8 matched tubes .    I have monos and I know , you dont really have to have 8 matched but I like to have a matched quad , two in each amp just so both amps are "the same" with regard to tubes.   
I have a local guitar/ amp tech who is also into tube hifi who will test tubes for free.   I went on his recommendation of Mullard repop EL34 and they sound great.   Guys like him sometimes have some really good NOS tubes too.