[Paul R.]

Equalizer APO provides options for a 15 band graphic equalizer, a 31 band graphic equalizer, and a 15 band "variable" equalizer, which is what some would call a "para-graphic" eq. Basically, one can vary the center frequencies of the 15 bands.

It does not provide a sharp low cut filter (sometimes called a subsonic or infrasonic filter), a high cut filter, or, so far as I can determine, parametric equalization. That last is a bit of a disappointment: Parametric eq is definitely the best for a natural sounding result, in many cases.

Now, I may be wrong about that last, as I am new to Equalizer APO. If there is a way to enable parametric eq with this app, please advise!

There is also a sidekick app named "AQUA" that works through(?) Equalizer APO. It may indeed provide true parametric equalization. I have not yet had a chance to download AQUA and try it out, but, I'll add comments here if / when I have done so.

I've also not yet tried Equalizer APO (or, obviously, AQUA) in conjunction with an app like my old fave for "simple", well, fairly simple, recording of audio: Wavosaur.

Knowledgeable persons, please comment or add information.

Thanks in advance!

[Paul R.]

Disclaimer: I am not connected in any way to the providers of these two programs. I am merely “a user”.

[Openurmind]

“She’s also a very keen listener (she got that from me) and picky about sound quality. In some ways she’s pickier than I, a lifelong audiophile, am.* This really limits choices!”

Just curious, this can mostly be appreciated so purely with Classical and/or Jazz. I that the case? :)

[Mogger]

https://heilsound.com/

heilhamradio.com/

[lefty-lie-spy]

Just go with Apple AirPods Pro 2. Large headphones are too big and silly to carry around outside.

[dgbrown]

I think you need to find an app that has a parametric EQ, if APO had the option it would be evident. Some of the best help,for your Grand-daughter using an EQ, is looking atfrequency charts for mixers. Real basic with the 7 Dwarfs She can go down the hole as far as she wants. I am not big into apps and what not, but I found most free EQ programs were lacking, either adding too much distortion, using too many resources or an annoying feature that tries to get money out of you. It's been a few years since I have tried them, so maybe it is different now.

[EQAndyBuzz]

I use the Jabra2 85 headphones. I get all the functionality I need for either music or work. I receive updates to the software and hardware.

[Don@VB]

I bought a Bluetooth headset for $7 at Five Below. It works great, even better than some of the older, name brand variety which were quirky when you tried to pair them to another Bluetooth device.

[Buttons12]

bkmk

[Paul R.]

Apologies for the delayed replies. I had to go out of town briefly.