JBL PartyBox Ultimate

Yes!
By using the JBL ONE app, you can change the equalization settings of the soundbar to fit your personal taste by adjusting the settings of each frequency to create your personalized EQ:

• BASS: Adjust the lower frequency sounds, such as bass or a kick drum.
• MID: Adjust the mid-frequency sounds, such as human speech.
• TREBLE: Adjust the higher frequency sounds for clarity.

Yes, however, the JBL ONE App gives you another level of control over the soundbar.
Through the App, you can personalize the soundbar's performance, such as:

• Customizing EQ settings
• Setting up our new feature called: My Moment 
• Connect your favorite streaming music services.

Once the sound bar is connected to the network, software updates will automatically be sent to the speaker/soundbar through Wi-Fi or the internet, if available

In the JBL ONE App:
(1) Go to My Products, select your product
(2) Select Support tile
(3) Under General, select Product Support

If you cannot stream music  with AirPlay, use the JBL One App; 
(1) Go to Settings.
(2) Select 3rd Party Service.
(3) Select the Airplay tile.
(4) Select Reset AirPlay.

(1) Select the JBL soundbar you want to rename
(2) Navigate to the Support tile and select "Rename My Product."
(3) Press the current name and type in the new name
(4) Press SAVE

(1) Use JBL One App to set up the My Moment Feature.
(2) Select the JBL soundbar you want to set your favorite music to the My Moment feature.
(3) Tap the My Moment card to assign music.
(4) Click Add Music to manage music streaming services and specific music tracks.
(5) Set the timer to inactive speaker/soundbar (optional)
(6) Set the music loudness (optional)
(7) Press SAVE

1. Ensure that your JBL One app device is less than 10m/33ft from the soundbar during the initial set-up.
2. Ensure your JBL soundbar is plugged into power and the power LED is illuminated on the BAR.
3. Unplug the power cord, wait 10 seconds, reconnect the power cord and allow the speaker to power up.
4. Temporarily relocate either the BAR or router so that they are closer together.  If the connection succeeds, the original location may be too far from the router to maintain a stable connection.
5. Try using a different device with the JBL ONE app installed and connected to your home network.

You can connect two of the same Partybox models (e.g. 2 x Partybox 310, or 2 x Partybox 100) together in TWS Mode by pressing and holding the Bluetooth button on both speakers for 5 seconds, or by pressing the dedicated TWS buttons on the rear panels of both speakers on the Partybox 110, 310 and 710. It is possible to pair two different Partybox models together using a wired connection (e.g. 1 x Partybox 310 and 1 x Partybox 100). It is also possible to pair two Partybox different models wirelessly in Party mode, however this is only possible with the newer Partybox models - the Partybox 110, 310 and 710. The Partybox 200 & 300 can be paired in TWS mode as they are the same model apart from the presence of a battery in the Partybox 300. If you connect an instrument or microphone to one Partybox speaker while using TWS, the instrument or microphone connected to one speaker will be reproduced by this speaker alone. You will not hear the instrument or microphone in both speakers. If it is necessary to have instruments reproduced by two or more PartyBox speakers, it is possible to use an RCA or aux cable – connected from the RCA, aux or daisy chain outputs on the speaker that the instrument or microphone is connected to, wired to the RCA, aux or daisy chain input of the secondary speaker. Alternatively a small mixing console can be used - connecting audio sources to this mixer and sending the mixed audio signal to the speakers with a wired connection.

It is a personalization feature that allows you to customize your favorite music track, auto-off timing, and music volume.
Once set up, you can directly access it through the remote control or within the JBL ONE App.