2. analog
  3. 999268131

Tubes in AR PH3 phono preamp

Hi there,
I am new into tubes or even precisely saying I've always trusted and trust to solid state design but it happens that I've borrowed to listen hybrid phono stage with remarkable dynamics and yet softness and soundstage.
I have a small problem while I'm listening: If I listen a music during 2 vinyls playback time, it seems that highs become to dim and on the other side, if I just start listening the highs are bright. Currently I've tested that phonostage on no vinyl operation and it's ultra quiet even on maximum volume setting of my preamp (Bryston 12b)Does that mean that I need to change tubes? Currently I have SovTek 660922 tubes and as far as I know they've never been replaced since 3 years ago. No hourwise info I have currently.
My current analogue setup is J.A.Michell GyroDec with RB300 and Benz Glider (~500hrs), Audio Research PH3 phono preamp, Alpha Core Goertz Sapphire b-n phono and preamp, Bryston 3b-st, Kimber PBJ silver balanced interconnects b-n preamp and amplifier, JPS Labs Superconductor b-n Bryston 3B-ST and Totem Forest loudspeakers
128x128marakanetz

Showing 1 response by tommy_in_sylmar

tommy_in_sylmar
144 posts
 
i agree with abby on the tube (and other electronics) warmup thing. call me nutz but i leave my sp3c on all the time, as i do the adcom 555II and everything else. NEVER has it seemed dull in the highs either in the phono or line stage.
tube rolling is an option and can be quite rewarding. i got a pile of tubes at the trw swap meet for cheeeep so its going to be a while for me.
audioexpress.com has tubes as does audioresearch.com. arc is probably where ill go when o, ready.
.....regads.....tr
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