Originally Posted By: 90 dB

Impedance is also dependent on your source source. What is the output impedance of your piano?
Here is a set of phones that were made for digital pianos (32 ohms), and man, are they cheap!
http://www.amazon.com/Samson-Technologies-HP10-Stereo-Headphones/dp/B003MV0U5E

My personal preference are these:
http://www.sweetwater.com/store/detail/HD280Pro

Regards,
Bob


I was really looking to understand what single phone impedance I should consider for all possible uses - keyboard, mixer, computer, iPhone etc. I assume that lower is better than higher so perhaps 32 ohm is the best choice?

I was actually also considering the HD280 Pro and based on your additional recommendation I went out and bought a pair. I tried them on my piano and knew immediately they were not what I want. I am very picky about my piano sound and they are very "boomy" By comparison my Grado 60's are clear and crisp and reproduce the stereo piano sound superbly. I assume this is the difference between closed and open designs. I think I will stick with Grado and forget about closed design phones.

Thanks
Tony