Sonic Frontiers preamp in standby mode


Hey guys, I have a question about Sonic Frontiers Line 1 preamp. Should it be left on in stand by mode at all times? If so, what are the benefits if any - cleaner sound maybe? Or is it just recommended to be left in stand by mode to preserve the tubes. I usually shut it off after listening because I don't like to leave the house with electronics left on but the manual states that it should be left on. My other equipment is Sonic Frontiers Power 1 amp, Musical Fidelity A5 CD player, Shunayata line conditioner, and Vandersteen Quattro speakers with high pass filter (amp & pre-amp are on balanced connection). All the tubes are new and fully broken in.

I would appreciate feedback on this question. It seems that sometimes if the system hasn't been on in a few days I don't get optimum sound until after a few hours of play. When fully warmed up this system sounds very nice.

Thank you,
music lover
jroyka65a6

Mystery solved.  I spoke to the people at Parts Connexion, who spoke to one of their techs that was one of the original designers of the Sonic Frontiers pre-amps.  He said that there is no "standby" mode on the SFL-1, but that it is recommended to leave it on when not in use, unless it's going to be a lengthy period of time between uses.  

These are still great preamps.   Enjoy.   12AT7 are easy to find compared to other NOS tubes and usually pretty affordable.   

I'm using a JJ 12AT7  in mine now and it sounds pretty good.   I had a Mullard 6201 in there and it sounded excellent.   

I just ordered a Gold Lion that will be here this week.  Very excited to try it out.  The existing tube is close to 30 years old (although it didn’t get much use at my dad’s). 

Post removed