---
product_id: 390870301
title: "BP40D Powered Acoustic Guitar Amplifier- Portable Bluetooth Speaker 80W W/Battery with Reverb Chorus Delay Effect, 6 Inputs,3 Band EQ, Black"
brand: "coolmusic"
price: "$738.98"
currency: USD
in_stock: true
reviews_count: 9
category: "Coolmusic"
url: https://www.desertcart.us/products/390870301-bp40d-powered-acoustic-guitar-amplifier-portable-bluetooth-speaker-80w-w
store_origin: US
region: United States of America
---

# 6 inputs for multi-instrument jamming 6-8 hrs rechargeable battery life 3-band EQ + reverb for pro sound BP40D Powered Acoustic Guitar Amplifier- Portable Bluetooth Speaker 80W W/Battery with Reverb Chorus Delay Effect, 6 Inputs,3 Band EQ, Black

**Brand:** coolmusic
**Price:** $738.98
**Availability:** ✅ In Stock

## Summary

> 🎶 Amplify your vibe anywhere, anytime — sound that moves with you!

## Quick Answers

- **What is this?** BP40D Powered Acoustic Guitar Amplifier- Portable Bluetooth Speaker 80W W/Battery with Reverb Chorus Delay Effect, 6 Inputs,3 Band EQ, Black by coolmusic
- **How much does it cost?** $738.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/390870301-bp40d-powered-acoustic-guitar-amplifier-portable-bluetooth-speaker-80w-w)

## Best For

- coolmusic enthusiasts

## Why This Product

- Trusted coolmusic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Freedom to Roam:** Built-in rechargeable battery delivers 6-8 hours of uninterrupted performance—no cords, no limits.
- • **Pro-Grade Mic Support:** 48V phantom power enables crystal-clear condenser mic input for vocals or instruments.
- • **Tailored Tone Control:** 3-band EQ plus reverb, chorus, and delay effects let you craft your signature sound with precision.
- • **Plug & Play Powerhouse:** Connect up to 6 instruments or mics simultaneously for seamless live or studio sessions.
- • **Wireless & Wired Versatility:** Bluetooth, USB, AUX, and DI outputs cover every connection need for modern musicians.

## Overview

The Coolmusic BP40D is an 80W portable powered acoustic guitar amplifier with 6 input channels, rechargeable battery (6-8 hours runtime), and advanced sound shaping via 3-band EQ plus reverb, chorus, and delay effects. It supports Bluetooth, USB, AUX, and DI connections, including 48V phantom power for condenser microphones, making it a versatile, professional-grade amp ideal for live gigs, studio work, and on-the-go performances.

## Description

Buy Coolmusic BP40D Powered Acoustic Guitar Amplifier- Portable Bluetooth Speaker 80W W/Battery with Reverb Chorus Delay Effect, 6 Inputs,3 Band EQ, Black: Amplifiers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great sound, rechargeable, and very portable - I LOVE this amplifier. The sound that comes out of it is outstanding for its size. I love that I can take it anywhere since it runs on a rechargeable battery. It's small, lightweight, and performs very well. It's also so small that it's easily concealable when I'm doing reenactment performances. I also love that it has four inputs which opens up more performance options. It's a great product for the price. 100% recommend.
Review: BOSE-LIKE QUALITY WITHOUT BREAKING THE BANK! - I don't know of a single battery-powered unit that can sound this good and loud, with fine rich tones and more than the COOLMUSIC BP40D Battery Powered Amplifier and Portable Bluetooth Speaker. I purchased the BP40D back in April 2024, and after the initial charge, in late April, I only had to attempt a new charge in late July 2024. Despite playing it outdoors with my acoustic-electric Martin guitar and a microphone plugged in, the charge held, from playing at an outdoor Boy Scout Jamboree to practice at home. I was first inspired to purchase it after a fellow musician, who did a lot of small gigs at campgrounds, senior homes, and more, told me he used the BP40D and its many qualities. It is absolutely, the best fit for a single musician or two to use, with both their instruments and microphones plugged in, without sacrificing rich Bose-like quality....yet at the most reasonable price ever. The size and portability are what sold me on it. I even stopped using my Boss Katana 100 W Amp, since this Coolmusic BP40D sounded better, had better reverb and gain, was lighter to transport, and did not require a separate sound system for singing or speaking! The output was also louder and clearer than my Boss Amp, as my guitar amplifier. Serious full-time musicians or part-time music enthusiasts like me can benefit from keeping one or more of these in their arsenal. I highly recommend for first-class Bose-like quality, without breaking the bank, in these tough economic times. You won't regret it. In addition, the Coolmusic Corporate office is extremely kind, helpful, and responsive to any questions or concerns you may have. I am 100% satisfied with both the product and the manufacturer. It is the BP40D Amplifier System and Bluetooth Speaker, for your electronic music needs.

## Features

- 【6 Channel】It is able to plug in 6 different instruments together, such as guitar, piano keyboard, microphone, etc. 3 Band Balance meet the needs of various music style and the built-in reverb effect ensures natural and echo-like sounds.
- 【80 Watt】It has enough power for your needs, able to fit in different situations like live, studio, solo performance and practice, giving you more freedom to control your sound to be heard over the other musicians without pushing your amp out of its optimal operating range.
- 【Bluetooth】Provide with options of wireless connection, phone input, CD/MP3 input, and USB plugin, it is able to fit in the different connection types, it is convenient and useful with its master control, headphone input and DI output.
- 【Condenser microphone switch】: The microphone interface is designed with 48V phantom power, compatible with condenser microphones and dynamic microphones.
- 【Rechargeable】It can run up to 6-8 hours depends on the volume you use after 5 hours charge. And it can work with a connection directly to the electricity.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09HZLVCN8 |
| Batteries | 5 Lithium Polymer batteries required. (included) |
| Battery type | Lithium Polymer |
| Best Sellers Rank | #8,413 in Musical Instruments ( See Top 100 in Musical Instruments ) #8 in Acoustic Guitar Amplifiers #2,888 in Music Recording Equipment |
| Color Name | Black |
| Compatible Devices | Keyboard |
| Connector Type | ['6.35mm microphone input', '6.35mm instrument 'RCA line '3.5mm AUX 'Bluetooth'] |
| Customer Reviews | 4.6 4.6 out of 5 stars (586) |
| Date First Available | October 8, 2021 |
| Item Weight | 18.66 pounds |
| Item model number | BP40D |
| Material Type | Metal |
| Output Wattage | 80 Watts |
| Power Source | Corded Electric |
| Product Dimensions | 11.61 x 15.74 x 10.26 inches |

## Product Details

- **Brand:** COOLMUSIC
- **Color:** Black
- **Compatible Devices:** Keyboard
- **Material:** Metal
- **Output Wattage:** 80 Watts

## Images

![BP40D Powered Acoustic Guitar Amplifier- Portable Bluetooth Speaker 80W W/Battery with Reverb Chorus Delay Effect, 6 Inputs,3 Band EQ, Black - Image 1](https://m.media-amazon.com/images/I/61UxpIMhqxL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: The power supply is a little noisy. Not so on battery power. Anyone have a suggestion for an alternative power supply?**
A: I’ve only used it on battery power

**Q: I know the shippin weight is 18.6 , but how much does the amp weighs?**
A: About 16#

**Q: Is this more for an acoustic guitar than an electric guitar?**
A: Definitely acoustic….electric would be fine
if you’re playing clean. Don’t think driving it hard (crunch/distortion) would be very satisfactory.

**Q: How can I tell when it is fully charged?**
A: When the indicator light on the right side of the charging port turns blue, it is fully charged. When this light is red, it is charging.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great sound, rechargeable, and very portable
*by A***R on January 26, 2026*

I LOVE this amplifier. The sound that comes out of it is outstanding for its size. I love that I can take it anywhere since it runs on a rechargeable battery. It's small, lightweight, and performs very well. It's also so small that it's easily concealable when I'm doing reenactment performances. I also love that it has four inputs which opens up more performance options. It's a great product for the price. 100% recommend.

### ⭐⭐⭐⭐⭐ BOSE-LIKE QUALITY WITHOUT BREAKING THE BANK!
*by B***N on August 20, 2024*

I don't know of a single battery-powered unit that can sound this good and loud, with fine rich tones and more than the COOLMUSIC BP40D Battery Powered Amplifier and Portable Bluetooth Speaker. I purchased the BP40D back in April 2024, and after the initial charge, in late April, I only had to attempt a new charge in late July 2024. Despite playing it outdoors with my acoustic-electric Martin guitar and a microphone plugged in, the charge held, from playing at an outdoor Boy Scout Jamboree to practice at home. I was first inspired to purchase it after a fellow musician, who did a lot of small gigs at campgrounds, senior homes, and more, told me he used the BP40D and its many qualities. It is absolutely, the best fit for a single musician or two to use, with both their instruments and microphones plugged in, without sacrificing rich Bose-like quality....yet at the most reasonable price ever. The size and portability are what sold me on it. I even stopped using my Boss Katana 100 W Amp, since this Coolmusic BP40D sounded better, had better reverb and gain, was lighter to transport, and did not require a separate sound system for singing or speaking! The output was also louder and clearer than my Boss Amp, as my guitar amplifier. Serious full-time musicians or part-time music enthusiasts like me can benefit from keeping one or more of these in their arsenal. I highly recommend for first-class Bose-like quality, without breaking the bank, in these tough economic times. You won't regret it. In addition, the Coolmusic Corporate office is extremely kind, helpful, and responsive to any questions or concerns you may have. I am 100% satisfied with both the product and the manufacturer. It is the BP40D Amplifier System and Bluetooth Speaker, for your electronic music needs.

### ⭐⭐⭐⭐⭐ Roland killer (unless you need onboard fx/ electric guitar amp models)!
*by A***R on January 25, 2024*

I don't usually leave reviews, but considering how pleased I've been with this product and how often I use it, I'd like to give er a boost. I've been a busker for over ten years now, and until now I - like probably 90% of other buskers - used Roland/Boss products like the Cube Street and its big brother, the Cube Street EX. This amp handily beats the Cube Street in nearly all categories for $150 less and holds its own against the EX, for nearly $400 less. PROS: - Sound quality. Sounds grand for what it is. Plug in a mic and an acoustic guitar, and you'll get a sound that's surprisingly faithful to the source. Much better than the smaller (Boss) Cube. Playing back music via Bluetooth will give you a good idea of what you're working with - it's quite mid-rangey, like most smaller amps, and not particularly detailed, but with a fairly solid, only slightly muddled low-mid end, and a nice bit of "oomph". The top end isn't anything special. If an airy, modern-sounding top end on your vocals is a must, the Cube Street EX does a better job at that & might be worth the extra cash. - Loudness. I was wavering between this amp and the bigger version, the BP60D, but I'm glad I picked this one as it's a lot more portable and plenty loud. I've yet to have any need to go beyond about 12 o' clock on the master volume knob, and around 10 o' clock is where I'm usually at for outdoor settings like farmers markets where you're not trying to be overpowering. - The battery. Unlike the Roland/Boss amps, which use AA batteries, this one is actually rechargeable - and it lasts substantially longer. I used rechargeable AAs for my Cubes, but that's an extra cost and it was a hassle having to pull out the batteries, charge them, and put them back in every time. - Bluetooth for playing tunes off your phone or karaoke/backing tracks. The Cubes have an aux in, but that means carrying an aux cable (and a lightning adapter if you're using an iPhone). - The USB socket is powered, meaning you can use it to charge your phone, or even better, power your guitar pedals with up to 800mA of power (if you buy a USB to 9V center negative cable). - Phantom power. Admittedly not something that's going to see a lot of use in most live settings, but fancy to have. - Output. 80W in this tiny box, compared with 50W for the EX and 10W for the Boss Cube. - Portability. It's much smaller than the EX and packs about as much punch. - Inputs. Two microphone inputs and two instrument inputs, as well as a basic line-in and the bluetooth connection makes for six channels, comparable with the Cube Street EX and far outperforming the smaller Boss option, which has only two inputs. CONS: - NO ELECTRIC GUITAR AMP MODELING! And the gain is clean, you won't get any overdriven/distorted sounds out of this. You could get around this (and get a sound much better than Roland's COSM) by using a modeling pedal like the Strymon Iridium or one of the UAFX amp pedals. But if you want electric guitar amp modeling in the box, Roland is still the way to go. - No onboard effects aside from EQ/Reverb, and the reverb sounds like arse. However, you can always get your effects thru pedals powered by the USB port or a rechargeable pedal power supply. - Default EQ balance - on acoustic guitar I've found it's actually a touch too bassy - I tend to dial it back to about 10 o' clock to keep it under control. But usually smaller amps have the opposite problem, eh? - (Possibly) Build quality. The sides aren't wood or plastic, but some sort of composite board material. It's not terribly substantial. If you remove a screw, some of the material will come out with it. And you're going to want to be careful with rain, if playing outdoors. I was careless and let mine get pretty damp a few times, and after one particularly wet session it wouldn't power on anymore. That was obv on me, and I was ready to purchase a new unit, but I figured I'd take it apart and see if I could repair it. It disassembles easily and the electronics are straightforward enough. The problem turned out to be the power switch, which went tits up for whatever reason. I was able to replace it with a cheap generic rocker switch for about $5. But obviously not everyone's gonna be able to troubleshoot that sorta thing. I couldn't say whether this component is a weak part, whether there's other weak components or whether I just got unlucky, but you might want to pay the $35 extra for a 3-year warranty if you plan to use this amp a lot. All in all, I'm betting this company will be a nice kick up the arse to Roland to start upgrading their line. It was only a matter of time before there was some more competition in this field, considering how much better both battery technology and the sound quality of portable speakers have been getting. If you were thinking about getting a Boss Cube Street and you don't need FX or amp modeling, get this one instead. And if you were thinking about getting a Roland Cube Street EX, I'd seriously consider this lil amp as a solid alternative. If you need an affordable live monitor, this'll do great. If you're very quality-focused and have $700 to spend, I'd consider the Bose S1 Pro+ as one of the only clear upgrades out there.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-07*