Coolmusic BP MINI Acoustic Guitar Amplifier, 30 Watt Bluetooth Speaker Rechargeable Portable Amp with Microphone Input Supports Volume Bass Treble Control Reverb Chorus Effect

The BP-Mini amp works very well and is light and portable. While the bass isn't as deep as some popular Bluetooth speakers, this may be because the sound is more neutral. I'm not a sound engineer, but I find the overall sound quality good for its purpose.It amplifies my small piezo-electric pickup with ease, and the Bluetooth connection works without any issues. The volume is impressive for its size. I haven’t tried the microphone input yet, but so far, I’m happy with its performance.One interesting feature is the 3.5mm "Phone (live)" jack. The manual suggests this is a TRRS (4-pin) jack for streaming audio out, but the instructions are a bit cryptic. I’m still experimenting to see how this functionality works in practice.The battery life seems solid so far, though I haven’t tested it in extended performances. However, charging is a mixed experience. While the seller states the battery should charge in about 3-4 hours, it took me over 8 hours to fully charge from dead. Using a capacity monitor, I measured around 10,400 mAh for the battery. The seller confirmed the battery capacity is 38.48Wh, which likely corresponds to four 18650 cells.PROS:Good sound level and rangeExcellent amp for instrumentsReliable battery life for regular useCONS:No PD support: The amp doesn’t charge from PD (Power Delivery) sources, which limits charging options (confirmed by the seller).No reverse charging via USB-C: While it has USB output, the amp isn’t a power bank, and the USB-C port doesn’t support reverse charging (confirmed by the seller).Charging time: Charging took significantly longer than expected.Additionally, earlier versions of the amp reportedly included a USB power adapter. The newer version only comes with a USB-A to USB-C cable, which the seller also confirmed.Overall, I gave this amp 5 stars because it performs exceptionally well for its intended purpose. If you're looking for a reliable and portable amplifier for instruments, the BP-Mini is a great choice!

The media could not be loaded. Musicians will love it! I'm just someone who does things on my own. I just like to make the things I do more fun.The reason I bought this was because I could connect via Bluetooth. Because whenever I want, I can listen to music at camp, in the park, at home or on vacation and wherever I want. And I can listen to music in a really great way. Do not compare with hand held. This is a real speaker :)It's very easy to connect. Activate the Bluetooth, connect and start playing the music. You can also record audio via bluetooth. There are additional programs for this. Or, if you want, you can connect a recorder or set it up as an extra.Sound quality is extremely good. I say good but much better than good :)All connectable instruments can be connected to this speaker. You can also add a microphone. There are inouts where you can add other parts.- It allows you to listen to music or sing with very loud volume. It also doesn't make the sound worse at all.- It is a light, big but very effective speaker that you can carry. Good enough to have fun at parties.- You can connect with any cable and all you have to do is to activate the Bluetooth.I thought it was a bit pricey, but for real and quality sounds, you need to get good speakers. I've owned a lot of speakers over the years. I combined them, separated them or bought different brands. But this Coolmusic brand is a truly professional brand.

Well this little baby is amazing!Portable, lightweight small speaker with a full set of controls on the top and a carrying handle. Marvellous sound quality, I was really very impressed with that for a small amp. Bluetooth - so you can pair it with just about anything. It even has two inputs (one for a mic, one for an instrument) and both very easy to balance with volume, bass treble and reverb, (+chorus for the instrument input). There is also a separate master volume control as well as the individual port socket volume controls. Reverb is heavenly on the mic output. There's a plug to plug in a mobile phone, although I haven't used that.On the back are aux in/aux out/charger and a headphone socket. I haven't used any of these yet, so can't comment on those.You tube karaoke videos paired with the tv, or your own music paired from anything with bluetooth capability. Fully rechargeable as well - no plugs required for a few hours or more. I've only run it for a few hours at a time, but the charge remains at over half way in that time, so I estimate it would run for around 4 hours on a full charge.I've knocked a star off for the charger and charger socket. The socket on the back of the amp is flimsy, so you need to be careful you don't damage it when you plug it in to charge it. The three pin plug on the other end seems a bit too small for my UK wall plug sockets, and I have to really push it in really firmly to get it to charge. The instruction leaflet is a bit lacking as well, but just about useable.Don't let the above charger problem put you off though, it's an excellent all rounder for buskers, outdoor performers and indoor closet karoke YouTubers! It would also be great for providing background music at the BBQ in the garden as you can just use it as a speaker if you like (but try not to annoy the neighbours -it's quite loud!!)If the manufacturers could just make that charger socket and charger a bit less flimsy at either end, it would have got five stars from me. I'm thrilled with it.