I ordered some from Walmart that come with an app for your Apple or Android phone that basically does a hearing test just like the audiologist would do (I know, I've had 3 of them in the last couple of months). Once you complete the hearing test in the app, it then "tunes" the aids based on the test results.
Here are the ones I ordered
EarCentric Hearing EarCentric Rechargeable Hearing Aids Disco MAX
I ordered them through Walmart rather than directly from the EarCentric web site because
1) They have a 30 day no questions asked satisfaction guarantee.
2) If I don't like them returns will be very easy - Walmart is just about 2 miles down the road
3) They were nearly $350 cheaper through Walmart and
4) I was able to use $77 of that savings to buy a 4-year extended warranty/service plan from Walmart - and again, the Walmart is right down the road.
One of the features I liked best about them is that although they are rechargeable, the batteries are in a removable "battery module" that can be removed and swapped with a freshly charged one. They even come with a PAIR of extra battery modules! Plus the charger can charge both the units AND both of the spare battery modules all at the same time. Pretty neat idea - and a feature I haven't even seen on any of the high end hearing aids. Though I'll bet a lot of them will end up adding a similar feature.
My order arrived about a week after I placed it and was waiting for me when I got home from work around 4pm. I unpacked them and they were already fully charged so I proceeded to set them up and configure them to match my hearing loss.
Right out of the box they were turned up to 80% of max volume and set for the "average" person's hearing loss. I made the mistake of trying to use the "semi-open" ear canal tips and got some serious feedback squeal. No fun.
So, I swapped the tips to the "closed" type that completely close off the ear canal and that prevented there being any more feedback issues. I connected them to my phone and ran the hearing tests and the app configured them with no problems. When it was all said and done I only needed them set to a volume level of 40%-50% of max.
I then swapped back to the "semi-open" style tips that don't completely block the ear canal in order to allow some sound to bypass the hearing aids directly into your ears for you to hear it normally. No more feedback.
The Bluetooth phone app is pretty cool. Each hearing aid can be adjusted for overall volume level in 10 steps, and each one also has 5 frequency ranges that can each be individually adjusted for gain in 10 steps. All the steps are marked as 0% to 100%. So that is nearly 10 million possible frequency mixes plus the 10 settings for overall volume. The volume for each hearing aid can be adjusted individually or you have the option to "link" them together so that the volume and mode changes on both are adjusted simultaneously using one control.
Additionally there are 4 separate "mode" settings that tailor the output by changing the the way the digital signal processor takes input from the dual microphones to adjust to the environment. The modes are:
1) Conversation (conversation with low background noise)
2) Restaurant (conversation with high background noise)
3) Traffic (stable background droning noise)
4) Outdoors (windy & noisy)
I've been wearing them 3 weeks now and am really impressed with these! I can hear all kinds of things I haven't heard in years - if ever. Even regular sounds that I hear every day are much clearer and more distinct because I'm hearing the high frequencies again. Wearing them when watching TV I only need to turn the TV volume up to 35 - and I've been listening to it at a setting of 50 for a long time. My car stereo sounds plenty loud when turned down to level 16 - and I've been listening to it at level 22-24.
My wife said something to me from the bathroom the other night - which is two rooms away - and I UNDERSTOOD HER the FIRST time! Without the usual "HUH?" followed by her repeating herself louder so I can understand. I can't remember the last time that happened! She was pretty pleasantly surprised too!
I've been wearing them all day every day - as much as 15 hours straight - and the phone app usually shows the batteries at about half charge still at the end of the day. I wanted to see how long the batteries would last on a charge. So, I wore them over 16 hours one day and then turned them off, but DIDN'T put them in the charger overnight.
I then put them in and wore them for over 6 hours the next day before they started giving a little beep-beep-beep about once a minute - telling me that the batteries were getting low. They were still working just fine, and the phone app showed they still had about 20% battery left, but I went ahead and swapped the battery modules anyway.
So, I got over 22 hours use out of them and probably could have got at least another hour or two if I really needed to. Their advertising copy says the batteries will "last up to 20 hours per charge" so they are definitely outperforming their specs.
After 3 weeks I am getting used to the combination of natural hearing (from sound getting through/around the semi-open tips) and boosted high frequencies which sound slightly "electronic". I'm sure that pretty soon I won't even notice the difference between tones I hear naturally and the ones that are augmented by the hearing aids.
For anyone wanting to take some hearing aids for a "test drive" without spending a fortune I highly recommend giving these a try. For less than $700 out the door, with a 30 day no questions asked return through Walmart, and coverage with a 4 year protection plan - also through Walmart, I can't see how you could possibly have anything to lose or how you could go wrong.