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The seller is very kind and patiently trying to solve my concern.
I am very appreciated for his service.

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Not comparable with iphone 15 pro max usb C. Can you tell me why? If i conect with iphone 14 with Lightning cable working very good. Any firmware need update?

Please help

Ps: just like the video i sent you, as long as i plugged the USB-C, it has that sound Pup..pup.. I have also tried to plug in with other Apple devices like Ipad, iphone 15 pro max, it has the same sound and cannot use for livestream. It could be the item is not working property. Please send me another exchange item.

Thank you very much.

As a beginner guitar user this amp is exactly what I was looking for. The instructions that come with it are not great, but plenty of clips in YouTube on how to use it. The only section you will need to know more than provided in the instructions is the BlueTooth connection and recording/playback functions. It even has a mute button in case you are using headphones and you don't want sound out of the amp itself.

These are impressive for their price. They sound pretty good, not super bass, but for everything else, they're fine. For major hip-hop, probably not gonna work the bottom end, not thumpers. They have several connection options for most use cases tho. And, they're rechargeable. My only qualm is that they hum a little if the charger is plugged in. A better charger will probably fix that tho.

I was looking for a battery powered acoustic instrument amp like the 50 Watt Roland Cube and happened on the Cool Music BP80 100 Watt battery powered acoustic guitar amp. After reading all the positive reviews and comparing prices, I ordered one. So far after a week of checking out the Cool Music Amp, it seems like a good buy.

Not having a lot of experience with battery amps, I can only compare it to my Carvin AG200 (non battery) acoustic amp which sounded great until it started making weird noises.

Sound and function wise, the Cool Music amp is actually a fair replacement for the Carvin, though the Carvin does offer more in terms of plug ins, effects, and power. It also costs twice as much and had sound problems that the dealer was not able to repair.

The Carvin tips the scale at 29 pounds with the Cool Music amp at 22 pounds and the 500 clam 50 Watt Roland Cube at 16 pounds. So, the Cool Music rig is a little heavier than expected, but it offers 5-10 hours of battery powered play time according to the specs, I have used it about 3 hours at a time while the power reserve lights stayed at 2 bars out of 3.

As for the sound, it provides a clear representation of the guitar, though seems heavy on the bass end, especially playing a nylon string classical guitar. You can adjust the EQ on the amp however to compensate. What do you expect for an 8 inch woofer I guess. Notice that there is also a bass version of this amp with an 8" woofer. My mandolin sounds great through the Cool Music amp. As for volume, this little amp is as others have said a real sleeper. It is way louder than you might expect.

As for the build quality, it is surprisingly excellent. The fit and finish is great, the knobs all like machined aluminum. The amp feels tight like and well balanced. The jacks all work well and labels are clear. One kinda odd thing is that the amp laying on its long side has the labels upside down when looking down at the knobs as you will need to do. Its pretty easy to figure out, but odd.

The amp is easy to haul around, and its size and lack of power cord makes the Cool Music amp a shoe in places where bigger amps cause extra hauling and set up issues.

I haven't had time to check out all the functions that the Cool Music BP80 offers, and don't know how the amp is gonna last over time, but after a week it gets my thumbs up.

Love this amp. Great sounds, great connectivity, long life battery, portability