on 5 February 2016
Roland promote this as suitable for use with digital pianos and I agree that they give excellent tone across the range of the piano. They are light weight and not tiring to wear and being an open design you can hear door bells, fire alarms etc. Clearly there will be some sound leakage the other way.
The only flaw is relatively minor, unlike the more expensive version (RH-A30) the quarter inch adaptor simply slides over the smaller jack and if you simply pull the jack out by the plastic cover, the adaptor remains in place - muting the piano until you pull it out seperately. My Roland piano takes both sizes so it is not a problem and it is something you really don't worry about, other than the first time when you wonder where the sound has gone!
To be honest I find them nicer to wear than the slightly heavier metal shelled RH-A30 and use them in preference.
on 26 April 2016
This was bought to allow our Asperger son to play his Yamaha EZ220 keyboard without disturbing the rest of the family.
The little I tried it sounded fine, but as he probably have rather more sensitive hearing than me, complained about a distinct "hum" which he basically could not tolerate. We tried some other headphones, and the hum was less prominant, I do not know the specs of this other set, but are likley to be less sensitive than the RH-A7. We tried on an older keyboard, with exatly the same noise, but we also tried it with the home cinema, and here there was no noise, so suspected the noise was actually caused by the keyboards. Now these are lower range Yamaha keyboard, but still expect them to have no noise issues, but sadly they do.
As he liked the headphones, we bought a headphone volume control, with the theory that this would dampen (attenuate) the noise and the signal. Turning the volume down on the volume control, and up on the keyboard did indeed remove the noise!
We also tried a ground loop isolator, which also removed the noise.
So...4 stars as they are pretty good, but with possibly some link to the noise issue, removing one star.