After quite some research I bought the flip 5 and I am quite impressed. Here is my review so far:
Pros: The speaker’s battery life is top of the line, and quick charging through USB-C is a big pro as most other speakers this price have the slower miro USB. the speaker is fine with water and there is no way someone could easily break the speaker or even damage it (the side radiators are also reinforced internally). Connection range is great and I tested stability 100ft+. No issues with Bluetooth quality as it plays at a high bitrate. Sound for this speakers size is outstanding, and compared to the 4, the flip 5’s base is incomparable; it is miles ahead.
Cons: The biggest drawback is that they chose not to carry over connect plus support. Party boost is great, but they could have given this speaker this ability easily. The transmission lag is small but could have been better in comparison to Bluetooth 5.0. The lack of a line in was probably due to waterproofing and isn’t too bad considering lots of devices are ditching them.
Summary: There are many complaints about the mono sound that I didn’t find any issue in. Having two stereo drivers an inch apart playing at high volume vs a single mono driver is nearly indistinguishable. (Mono in a closed tube radiating enclosure like the flip lineup also boosts performance dramatically.) The 20 watt driver is a beast and has no noticeable distortion at max volume (I use it in a grass field and it is extremely loud). The speaker will last me a long time, and as more newer speakers are released, party boost will become more usable.
I purchased the custom flip 5 speaker as a gift for my son and he loves it! The speaker is easy to connect, sound quality is great, its material is durable and of good quality. The image on the custom speaker is clear. I have purchased another custom speaker for my other son bc he too liked the speaker.
Flip 5 works fine with an iPhone. The sound is good. But when you connect it to a Mac, problems start. You can't use any other bluetooth device, like a mouse, when the speaker is on and playing. Speaker starts cracking and drops connection. It seems that JBL Flip is using too much bluetooth bandwidth, and there is no setting to reduce it.
If you are going to use Flip 5 with a phone or tablet, it probably works fine. But if you think using it with a laptop too, forget Flip 5, and get an another speaker with an AUX connection. I now wish I did too.
No, I would not recommend this to a friend.
Response from jbl.comBy Homer at Customer Support, Customer Support, July 17, 2020
Thanks for the honest feedback on our JBL Flip 5. We understand that the Bluetooth connection to your computer isn't satisfactory. From your description, it can be caused by how the computer prioritizes the Bluetooth connection, as evidenced by the fact that pairing to your phone is fine. Try pairing it to another Mac or Windows computer to double-check if this is isolated only to that particular computer. If it does appear isolated, then please reach out to the computer manufacturer to properly configure its settings. Otherwise, please reach out to our Customer Support to check your options. https://fi.jbl.com/support-contact.html
More robust sound than prior Bluetooth speakers of this size. But plenty of issues remain. 1) Note stereo mode with multiple speakers requires use of Connect+ App, only available for iPhone and Android mobiles (no laptops or alternate mobile options) 2) Runs on dated Bluetooth 4 which often crackles or has gaps in connectivity 3) Significant latency/lag when syncing audio embedded within a video (if playing a music video the sound won’t line up well) 4) Party mode (multiple speakers not in stereo) will drop out occasionally. 5) Customer support online is not quick to reply to emails or offer much.
No, I would not recommend this to a friend.
Response from jbl.comBy JBL, Customer Support, July 16, 2020
We appreciate the feedback you've provided to us. We understand that our JBL Flip 5 didn't meet your expectations. We're always looking for ways to improve so we'll make sure to submit your feedback to the right department.