Stereo system vs Steinway

Hey folks,

So having more room in the new place, my inherited Steinway grand piano is scheduled to arrive soon.
As an aspiring classical piano student, listening to pieces I am working on is a constant.  

I am told that the piano needs an environment where the humidity stays safely above 45 - 50% to prevent the cabinet from drying out/developing cracks/etc. 

My piano teacher keeps hers at just over 60%.

I have a "secondary" system in the "piano room" consisting of a pair of Ampzilla 2000 2nd editions, with an old Bryston BP26 and a much older set of B&W Matrix 801 S2s.  Source is currently a laptop.

Are there any guidelines regarding safe humidity levels for audio equipment? 
Would 50% ish be too high?

I also just inherited (along with what I believe to be one of the first Rega turntables my uncle purchased in the UK over 30 years ago sitting on an air bladder supported platform) an older and really heavy Jolida tube integrated.  Are tubes more/less sensitive to humidity?

Am I just being paranoid?
Or do I need to consider moving the system out of the piano room and perhaps listen with headphones?

Thanks everyone!

Not paranoid, certainly not. Neurotic, certainly. But considering you are an audiophile, well within the normal range.

There's more to it than humidity. Kept at stable room temp, no problem. Cycle temp up and down 10 degrees per day and it won't matter what the temp, air warms up faster than metal, and humid air condenses into water on cold metal.

Set the thermostat and leave it alone, you will be fine. 
You can listen to that set up ? You need big upgrades. You need real speakers, you need good tube equipment and you need analog source too, including tape, to make recordings.

Steinway wins, i would agree with @inna that a recording device would be nice.
Humidity up to 60% is acceptable.
A humidifier-ionizer can work, some of them have low noise.

I would go for 'normal'.

A gazillion people have pianos over the centuries, most in rooms with less humidity, the thing is to avoid excessive dryness that shrinks moldings, cracks wood, etc. In 'normal' humidity levels, they don't crack, they hold their tune.

And definitely avoid frequent temperature changes, i.e. avoid outside walls, too near windows, avoid too much sunlight on the wood ...

I have a forced air system with adjustable humidifier. I watch my ceiling moldings in the winter, and how much moisture jumps on the windows and storm doors when I open the outside doors. Enough, not too much.
Hleeid, I have my father's 1929 Mason + Hamblin parlor grand. Interestingly it has a Steinway pin block in it. Apparently at one time they were having trouble getting the right wood for it so they bought a bunch from Steinway. It is valued between 50 and 60 grand. Anyway, We live in New Hampshire and have wide swings in humidity as the seasons change. It is not so much the exact humidity that matters. It is a constant humidity. If the soundboard dries out too much it will crack and the piano will be worth 1/2 what it should be. Check the sound board carefully. Many of them have already cracked. They can be repaired but you can not replace a whole soundboard. They fill the crack and sand it down. 
A 10 point variation is definitely OK. Many pianos will tolerate a 20 point variation. I allow my house to drop to 35% in the Winter and let it go no higher than 55% in the Summer. Electronic equipment and speakers have no problem with humidity as long as nothing is condensing on them (high humidity with an air conditioner blowing on them) Records on the other hand do not tolerate high humidity. Over 80% and they will grow mildew and other fungus which smells bad and can ruin the vinyl surface. Enjoy your piano! 
There are humidification systems that attach directly beneath the piano to help- not a complete solution but doesn't require that you turn your room into a jungle climate. I had a couple of old concert grands- a Bosendorfer and an Erard. They sounded gorgeous when "voiced" but after a few weeks, started to sound sour. I got somebody who really knew pianos in NYC to come up to look at it. He used to do a very famous conductor's piano set up and tuning. He hemmed, he hawed, he looked, and then said with a thick European accent, "just buy a Steinway."  :)
Some of the vintage pianos are great; there was a shop near where I lived at one point where I just happened on a door in an industrial facility and there were countless pianos, almost all big grands, in rows, being torn down, rebuilt, etc. I happened on a place that was well regarded for restoration of these instruments. Never did get any of mine restored, and eventually sold them. 
Yes, the soundboard is the entire reason to worry about humidity on your Steinway, but you don't need to be obsessive about keeping things at or above 50% humidity.   The thing to worry about is too much humidity, and too broad of a range in humidity over a broad period of time.  

I live in Minnesota where we have big swings, and we run two evaporative humidifiers in the winter to make sure things don't drop below 35% for any length of time.

Actually, summer is the bigger worry, because it is the swelling of the soundboard with moisture that causes it to "stuff" up against the solid case, and that compression translates into some "set" of the wood, making it smaller.  Then, when things dry out in the drier periods, the wood can go into tension causing cracking and loss of camber in the board.  That's when your piano's marvelous tonal quality disappears. If it loses its camber, a re-build is the only remedy.

Millercarbon's advice about temperatures and humidity with a stereo is spot on.  Not much to worry about there, unless you are letting your house swing wildly with crazy A/C use or something...
@millercarbon - As always, I again appreciate your clarifications. Took my peace of mind up several notches.


Your inputs have filled in a lot of the blanks for me. Respectful acknowledgements to you as fellow pianists.

@whart - Wow! Bosendorfer has been on my dream list ever since playing a few in downtown Boston decades ago.
Are there any direct attach humidification systems you have used/can recommend?

@mijostyn & jbrrp So yeah the soundboard has cracks but can be repaired. The piano is an original to the instrument 1931 Steinway Model M Grand. Fortunately, I hooked up with an awesome former Steinway senior technician running his own operation doing a restoration.

@mijostyn As a New England neighbor of mine, when appropriately safe, you (& significant other/family) are more than welcome head south of the border to MA and listen to the different setups I’m still trying to make sense out of. Your experience/inputs of course, would be of great assistance and much appreciated.
@hleeid- on the question of which humidification systems, I cannot tell you- it has been too long and several lifetimes ago. I'd just talk to a specialist in vintage pianos and ask them. How old is yours?
@whart My piano is a 1931 Model M.
No worries on the humidification systems. I appreciate the tip though and will do some research.

The piano is currently being restored and will be pampered with careful climate control.
I look forward to enjoying it along with my audio system (in progress) to listen to during practice sessions.

Thanks for all the helpful advice!
46% humidity is optimal for hardwoods. Especially Walnut which cracks easily when too dry. I would not go too much past 50% indoor humidity if possible.