Find a finished board - like a dining room table leaf.  Cut it to the length you desire.  Then get a couple of fairly hefty 3-way speaker cabinets and place the board on top of them.  you can choose to have the speakers oriented anyway you like ... forward facing or reward or to the side, for example.  Now you have a hefty speaker system without the sound blaring in your face.  An approximate final height should be about 19" or 48+cm.  Don't be afraid to "step out of the box".

Lanny

It's a drummer's chair, but I find it very good for playing piano. The saddle-like shape is better for your blood flow in your legs, when sitting there for hours at a time... as far as I know.

These are usually available at Guitar Center or similar places, so you can try before you buy.

Probably not stylish enough for a classic living room though

Hey misc, can anyone recommend a good office chair for 10-12+ hours of use? I want to buy a good quality chair and so far, I have run through some of the cheap $150-$200 chairs

Herman Miller Aeron Chair - size C.

https://www.sweetwater.com/store/detail...h-backrest

Kenny

Cheers, Ian.

I'm not sure if this Quick-Lok piano bench\stool is healthier, but it lets the player adjust the height of the seat and the placement of the back support pad. I tried it out briefly, and the pads and general arrangement were comfortable. Very solidly built:

http://www.samash.com/keyboard-benches/...-qdx749xxx

I ran across it at Sam Ash, so I copied the link from that store. They seem to always have them on-hand, so you could check it out if there is a local Sam Ash in your area.

This is an okay piano stool. However, I prefer an office armchair with a soft seat, adjustable armrests, and adjustable height and the parameters (rocking, swivel). For serious playing, I sit more towards the edge of the seat. When thinking and improvising, I will often recline a bit and even rest my arms on the armrests. (You might be surprised how doing that can greatly loosen up certain muscle groups and enhance your ability to play lightly, quickly, and with a rhythmic fluidity appropriate to jazz and contemporary classical music). Lastly, when I need to rest that's easy too! This sort of chair can easily be adjusted to relieve back tension as well. But mainly I would suggest that one stand up every 30 mins or so and move around, walk, do some deep knee bends etc..

there is a balance cushion:
http://tinyurl.com/pm3ecvm
you can put this on a chair that is lower, and still reach the pedals.

hello kamil, i am a personal trainer, and in our training, we use the swiss ball
https://en.wikipedia.org/wiki/Exercise_ball
there are different sizes, and you can pump them up to be very solid.  you want to get one that allows your upper legs to be 90 degrees or slightly above.  basically, you are looking at needing to strengthen your core muscles.  here are pictures and a pretty good explanation:
https://www.acefitness.org/blog/3562/mu...f-the-core

all the muscles are connected, so you would also want to strengthen your upper body so you don't slouch or cave in, and your back, so you can support your body's weight in a good upright position (good posture).  at first it will be hard to do, because the muscles are used to staying in one position.  sitting on the ball makes them work, in really small ways, but eventually your back will strengthen.  it takes time.  you may not be comfortable at first.  you shouldn't sit in one position for long periods of time...the muscles get used to that position (sitting), and when you stand, they are all tight, because while you sit, the muscles are shortened (the cause of most lower back pain is tight hamstrings).  there are whole sets of strengthening exercises you can do with the swiss ball.  while you are sitting, you can roll your hips forward/backward/in a circular motion; and you can hop up and down.  you can balance on the ball as well...usually in the prone position.  i have friends who can move around with the ball beneath them by rolling it (they would be sort of kneeling on the ball with their hands in front).

suffice it to say, whatever chair you get, it isn't too much the chair being the problem, so much as it is staying in the sitting position for long periods of time.
feel free to ask if you have any further questions.  [Beto-Music has the right idea, two replies up!]

http://www.samash.com/keyboard-benches/...-qdx749xxx

I ran across it at Sam Ash, so I copied the link from that store. They seem to always have them on-hand, so you could check it out if there is a local Sam Ash in your area.