Resound quattro vs resound one

@jim_lewis said:

I’ll see if a transcript shows up with the course completion in my online account and in another post I’ll add one or two images that show how steeply sloping loss limits the ability to fit and M&RIE receiver.

No course transcript available yet - they might spend quite a while correcting typos in the speech-to-text transcript as Zoom would routinely make “M&RIE” as “marry” in the text, etc. The handouts associated with the course (all the slides and 3 white papers on M&RIE performance relative to standard HA’s) are available to me as a participant in the Audiology Online course listing and perhaps will be to anyone auditing audiology online when the course is available as a canned, archived session.

Below are five illustrative slides from the course.

First slide explains suitable patient conditions for fitting M&RIE receivers:

Relative to hearing loss falling EITHER entirely in the light gray areas or ENTIRELY in the dark gray areas BUT NOT BOTH AT THE SAME TIME, the following examples were given:

The patient on the right above the loss falls too abruptly from minimal low frequency loss to moderately severe high frequency loss, so the patient is both in the light minimal loss area at low frequency and the more severe gray loss area at high frequency. Don’t think the speaker ever gave an exact rationale as to why not light gray loss and dark gray loss in the same patient at the same time.

The patient on the right is a better candidate because all of his/her loss is in the moderately severe dark gray regions of the fitting curve for M&RIE receivers.

Types of domes or molds appropriate for light gray or dark gray loss regions:

Illustration of how MSG (maximum stable gain) curves impinge on fitting:

The red regions of the gain curves shown for #1, #2, and #3 are either inaccessible because the gain amplitudes there exceed the MPO (maximum possible output) of the M&RIE receiver or the descending red curves in the 2K to 4K frequency and 6K and above show feedback regions that are verboten. However, up to 10 dB of overlap (amplification) into a feedback region is considered acceptable. Therefore, patients #1 and #2 are good candidates for M&RIE receivers, patient #3, where the required fitting curve amplification would go 20 to 30 dB into the feedback region, is not.

Basically, the dotted red line at the bottom of the MPO/feedback risk frequency regions is the maximum stable gain curve in the ReSound parlance.

Someone asked for #3 if one couldn’t just implement feedback control and the speaker said, yes, you could but it would reduce the allowed amplification and be seriously off the user’s prescribed fit - or something to that effect.

Thanks. Great info. I’m clearly not a candidate!

Thanks for this level of detail. According to this, I’m not a good candidate for the M&RIE receivers. My loss crosses the light gray/dark gray line, and the feedback calibration impinges as described in that slide #3.

I do like the sound, and haven’t had any real issues with the M&RIE receivers with M&RIE directionality, but this tells me that my aids are possibly programmed suboptimally.

I’m going to stay in All Around with All Access directionality over the next month, and will very likely switch back to standard MP receivers with medium closed domes at my next appointment on Oct. 11.

@jay_man2 said:

I do like the sound, and haven’t had any real issues with the M&RIE receivers with M&RIE directionality, but this tells me that my aids are possibly programmed suboptimally.

The first 1/2 to 2/3 of the presentation was more like a sales talk on the supposed benefits of M&RIE receivers and concentrated on stuff ReSound had already written white papers on - more natural “organic” sound, better localization, better wind suppression (when M&RIE microphones are active in M&RIE mode), slight enhancement of signal-to-noise ratio for speech in noise. But then when the presenter got to the good candidates/bad candidates part, she didn’t say where that data came from. At the very beginning of the talk, she thanked the audience of HCPs for all the wonderful feedback they’d provided on fitting M&RIE receivers over the past year so I (erroneously?) assumed that that’s where the recommendations on what type of patient that the M&RIE receivers works best with comes from. If you can get any further advice out of Costco fitters as to where you’re at with your fit and what ReSound is telling them relative to the Best Practices talk, I’m sure a lot of us would love to hear Costco’s take on how all this applies to the Jabras.

To be fair to her, I think she mostly sells the Amplifon branded version of the Resound One, which is in UK called the Amplifon On I believe. That comes in a shell that looks exactly like the rechargeable Quattro and uses an unbranded version of the Quattro charger. But I insisted on proper Resound Ones that she had to get in specially.

And I’m not trying M&RIE as my loss is not a good match, also judging by what you reported here from your online course recently. She actually fitted with HP receivers, but I may get a couple of spare conventional MP receivers as I’m just inside the fitting range for them, and see whether I like those better after I have made the necessary changes to my settings with SmartFit. Anyway all that will come later. I need to get the charger sorted first and then actually pay for the Ones which are on trial at the moment.

I set up an in person appointment with my Costco fitter for Sept. 28. I printed out the slides from the course that you shared in this thread, and will show them to the fitter. I plan to ask her to talk with her ReSound rep, share my audiogram and M&RIE fitting results, and get their take.

It’s a process and journey that my fitter and I are on together, and there are enough benefits from Jabras with regular receivers to still warrant them replacing Prezas. The new receivers that better grip domes, the new closed domes, and the new All Access Directionality are three benefits that come to mind.

I have the Jabra Enhance Pro with M&RIE which are ReSound One’s. I have tried All Access Directionality and M&RIE in the All Around. I prefer the M&RIE. The sound is much less tinny and more natural.
The transcript for the video is now available at Audiology Online. Registration is free.transcript-cont-resound-36998-mriereceiverbestpractices.pdf (106.8 KB)

The level of gain applied to one ear being wrong is potentially less to do with testing accuracy than the differences in the canal volume, impedance/venting vs the a standardised ear calculation. The effect these variations have on overall output of the hearing aid is huge.

Also you need to make sure that the BC values are entered into the system for both ears as without an accurate calculation of the conductive vs. Sensorineural loss the gain figure will be awry.

Thanks for the interesting observations. The left aid being too loud was on the initial fit done by my audiologist after she had done a new audiogram. She did include BC readings. But things are still moving around as it’s only 3 months since I had a stapedectomy op on my left ear.

It’s true that I have found ever since LINX 3D that the 2/3 kHz region is too high, by several dB. It doesn’t matter that much for speech, indeed it may even help, but for fidelity of music it isn’t a help at all. It may be to do with my ear canal geometry; I had already wondered about that. Anyway now I know about it, it’s an easy issue to solve and even easier having Smart Fit at home now. Fortunately my audiologist is relaxed about me tweaking the aids myself. It saves her a lot of short appointments with me and she says that I’m the only customer she has who talks dB and kHz to her or has views on things that might or might not need altering on the advanced settings tab. So she thinks that I do know what I’m doing, which to an extent I do….

I know this topic is a little old,but.not old to me,I have had my Jabra for almost 6 months,and still keep having them adjusted,what is MP receivers? I really don’t know if I was a good fit for these Jabra aids,I am really running out of time to return them only a week left to make my mind up,

I did hear from my Costco fitter that she had lot’s of returns on these Jabra’s M&RIE aids.

I have found Costco Hearing Aid Specialists tend to push their KS10s. I am in the process of getting aids from Costco and the Specialist tried to talk me out of the Jabra. I wonder if they get a more commission on the KS10s?

FWIW
On the ReSound website Quattro are listed as Advanced with less features and One is listed as Premium.

My Costco was the opposite. They would only fit me with Jabra’s, wouldn’t even allow me to trial the KS10, said they have to many returns from people with loss similar to mine. Jabra’s (Resound) aids are able to adjust and boost gains at 10k freq where KS10’s top out at 8k. So it seems to depend on your loss. My Costco said the Jabra’s were the least returned aid they sold as well as the most reliable, at least from that one store. Costco doesn’t make “commission”, per se, but I’m sure there somehow are monetary rewards for less returns.