Review on 🚫 Sony MDRRF925RK Wireless Headphones: Unavailable Model by Manufacturer by John Twardowski

-------------------------------------- -- ------------------------------------------------ -- -------NOTE: THE BASE STATION CAN CHARGE STANDARD AAA Ni-MH BATTERIES. If you open the L side panel, you will see the supplied battery. That's a rather small capacity of only 550 mAh. In fact, it's just a cheap stuffed Sony AAA pair in a plastic case. However, if you try to simply install a larger capacity Eneloop, you may find that it will not charge when placed on a charging station. This is to prevent accidental charging of alkaline batteries. If you look closely into the battery compartment, you will see a small lever in the shape of a shark tooth. When installed, the supplied battery presses on this lever and closes the charging circuit, allowing the headphones to use the charging function of the base station. If you take a small blob of superglue and cover the switch, then press on it with a toothpick and hold it there for about 30 seconds, that's enough to permanently attach it. This allows you to charge any rechargeable battery via the base station.------------------------------------------------- ---- --------------------- -------------------------------------- ---- --------------------- -------- I bought two of these for myself in 2011 and have been using them for about half a year now, so I feel I have enough hours to write a useful informative review. First the pros: Comfortable ear pads - The ear pads are thicker at the back and thinner at the front. This ensures that the headphones fully cover your ears without putting pressure on them. This makes them extremely comfortable to wear even during long sessions. I have a pair of Sennheiser HD201 headphones and they even have soft padding all around and really hurt my ears after prolonged use. Easy charging - just place the headphones on the charging/cradle and they're charging. Standard batteries required - standard rechargeable batteries can be used instead. from the "proprietary" Sony 2xAAA battery pack. *SEE NOTE. frequency lock. Much easier to use than an analogue dial and eliminates 99% of the noise caused by frequency mismatches. It also prevents frequency wander when batteries are low. And now the cons: signal loss/pops. Because the headphones use a frequency-blocking design, the signal is either excellent or non-existent. In practice, this means that while standard wireless headphones remain static over long distances, these headphones are constantly being plugged in and unplugged as the signal is lost, rendering them unusable. This also happens when the batteries are low. If you are having trouble, charge or replace the batteries first to see if that is the problem. In addition, if the headphones lose their signal, they will automatically attempt to reconnect. When this happens you will hear a loud bang. While this isn't too bad in and of itself, when it starts constantly losing signal, like in the situations above, the pops become extremely annoying. Auto on/off – sounds like a good idea on paper, but it's poorly implemented. While it might seem like a good idea to put an on/off switch on a spring on the headband, this requires the user to sit or stand upright at all times. Attempting to lie down, recline on the sofa, or rest your head on a pillow will raise the device slightly above your head and allow the spring to return the switch to the "off" position. Manual on/off would be much more convenient.