2. amps-preamps
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When to Poweroff amps and preamps

I apologize if this has been asked before but I haven’t been able to find it.  What is recommended for when to turn off the power to amplifiers and preamps?  What if you’re going to be using the equipment within a day or so...power it off completely, put it on sleep if that’s available, leave it on?  What if you’re not going to use  it for a longer time...a couple of days?  A week?  Are there different recommendations for solid state and tube equipment? I’m interested in both getting the best sound and prolonging the equipment life. 
brownsf
lnitm
144 posts
 
I asked service tech at Mark Levinson on my 532H and he recommended to leave on. 
68pete
1,022 posts
 
Mine are all SS, i leave them on 24/7-the amp in stand by. If i leave over night  i unplug from wall.
oldhvymec
5,101 posts
 
heavy - is your MC240 stock ? Mine is 1961 and super modified.... sweet amp for sure.

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All 5, MC225,2x240s,275, and a pair of 60s are all stock, I have all the parts for PS, upgrades and pio caps, and a pair of 24k cases for the 60s.
The one 240 though has EU caps in it, so they didn't self destruct, like a lot of the other bumblebees. It is VERY special, indeed.
 I did mod up a 275 GG, that I managed to blow up a while back, (cable drop), it's quite a bit better than stock. Still it's a KT88 unit.. Not my favorite valve. I'm a 6550, El34, 6L6,  guy these days.. :-)

Summer/Winter, wahoo, night and day where I live. 33-35 is considered cold here, and it is, if you get caught in it. But I've seen, 45 at night, and 105 in the day, two days apart. Tube gear is not real partial to a REAL cold starts. My Cary stuff can pop a fuse with a real cold start too.

Regards
lukaske
307 posts
 
My metronome C6 preamp (with tubes) is always on “stand-by” when I don’t play. The Wavac 805: after listening:”off”. To put on your equipment: first Source, than préamp, than Poweramp. For turning off: first poweramp,than preamp an at last: the source.
kingbarbuda
515 posts
 
I have two systems and leave the PS Audio PowerPlants on for both. But I power off my tube integrated when not in use. I leave on my Pass Labs preamp. But everything else that is SS and can go on standby mode I put in standby mode. On my headphone station I power off all the gear that I can reasonably power off. Most of that is SS. One amp is a Schiit Moljnir and I power that off. 
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