# Flatsons Crush20 20W Portable Acoustic Guitar Amplifier

The flatsons Crush20 is a battery-powered acoustic guitar amplifier with a separate microphone input, two-band EQ and reverb. Its claimed 20W output, 5.5-inch speaker and 1.9kg listed weight suit portable practice and small gatherings, while the manufacturer cautions that it is not designed for regular electric guitars.

- [Original product page](https://bargainpostbox.co.uk/product/flatsons-crush20-portable-acoustic-guitar-amplifier)
- [View offer](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: flatsons
- Model: Crush20
- Category: Books, Music & Hobbies > Musical Instruments
- Price: 84.99 GBP
- Previous price: 99.99 GBP
- Discount: 15%
- Price checked: 2026-11-12T19:17:42.617Z
- Rating: 4.5 / 5
- Reviews: 137

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Separate guitar and microphone channels are described with individual reverb control. The listing also specifies a two-band EQ.
- The manufacturer claims up to 8 hours of battery operation and lists a 4-level battery indicator.
- Wireless 5.3 playback is claimed, with a stated 15m \(50ft\) working range.
- USB-C charging cable and manual are listed as included.

## Pros

- Battery power, a carry handle and the listed 1.9kg weight support use away from a mains outlet.
- Separate guitar and microphone inputs are suited to combining acoustic playing and vocals.
- Customer feedback reports compact portability and sufficient volume for small venues.

## Cons

- The manufacturer specifically says this acoustic-focused amp is unsuitable for regular electric guitars and will not provide their expected saturated tone.

## Specifications

### Identity
- Brand: flatsons
- Model: Crush20
### Audio and inputs
- Output wattage: 20 Watts
- Speaker size: 5.5 Inches
- Number of bands: 2
- Amplifier type: Solid State
- Connector type: 6.35mm Jack
- Sound profile: Full-Range
- Compatible device: Guitar
### Power and battery
- Power configuration: Battery Powered
### Dimensions and installation
- Dimensions (D x W x H): 16.6D x 21.5W x 16.3H centimetres
- Weight listed: 1.9 Kilograms
### Materials and appearance
- Colour: Wood

## Before you buy

- The manufacturer’s wireless range and up-to-8-hour battery duration are stated claims, not independent measurements. Microphone support is specified for dynamic mics only. The listing says Channel 1 supports active guitars and microphones and Channel 2 passive guitars, so check your instrument and mic requirements before buying.

## In the box

- USB-C charge cable \(1\) (Included)
- User manual \(1\) (Included)

## A good fit for

- Acoustic guitarists who want a rechargeable amp for practice or portable use.
- Singers accompanying themselves and needing a separate microphone input.
- Buyers seeking a compact amp with claimed wireless playback and built-in reverb.

## Less suited to

- Players seeking an amp for regular electric guitar tones or distortion.
- Users who need confirmed compatibility with condenser microphones.

## Customer feedback

Customer feedback highlights compact size, portability, sound quality and volume, with reports of enough output for small venues and quick USB-C charging. Some customers describe using it with both acoustic and electric guitars, but that reported use conflicts with the manufacturer’s advice that it is not suitable for regular electric guitars. Treat the praise as customer perception rather than proof of performance, and consider the claimed 20W output and portable design in light of your intended setting.
- Positive themes: Customers report a compact, portable design and positive sound quality.
- Positive themes: Feedback describes sufficient volume for small venues and praises USB-C charging.

## Frequently asked questions

### Is the Crush20 suitable for an electric guitar?
The manufacturer advises against regular electric guitar use. It says the amp’s acoustic-oriented full-range tuning does not create electric-guitar-style saturated midrange and distortion.
### Can I use a microphone with it?
The listing describes a microphone input and says dynamic microphones are supported. It states that condenser microphones are not supported and directs microphones to Channel 1.
### How long does the battery last?
The manufacturer claims up to 8 hours of continuous operation. Actual runtime is not independently established in the supplied information.
### What is included in the box?
The manufacturer’s listed contents are one USB-C charge cable and one user manual.

## Alternative options

- [Flatsons FBA‑20 Portable Electric Guitar Amp, 20W, Clean & Drive Channels \| Rechargeable Pratice Guitar Combo Amplifier,Delay Reverb EQ,OTG Recording,Wireless,Headphone Jack,AUX IN,USB-C Charging](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
- [Flatsons FBA-10 Practice Guitar Amp,10W Electric Guitar Amplifier \(Black\) \| Clean/Drive Channel, 6H Working, USB-C Rechargeable,3.5mm Headphone/AUX Jack, Wireless Portable Mini Amp for Indoor Use](https://bargainpostbox.co.uk/visit/flatsons-fba-10-10w-practice-guitar-amp)
- [Portable 40W Battery Powered Acoustic Guitar Amplifier with Bluetooth – Coolmusic BP40 – 3-Channel PA Speaker for Guitar, Mic & Keyboard – Rechargeable Outdoor Performance Amp](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
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- [Coolmusic 30W Acoustic Guitar Amp Battery-Powered Portable Amplifier with Bluetooth, Reverb/Chorus Effects, Mic and Guitar Input, USB-C Recording for Practice, Busking & Small Gigs](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
- [STRICH SEA-10 Electric Guitar Amp, 2 x 5 W Compact Portable Wireless Amplifier Dual Channel, Clean Drive Switch, Rechargeable Guitar Amplifier with 1/8 Headphone Output for Beginner, Practice, Black](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
- [Donner Go 25W Mini Electric Guitar Amp, Smart App Control, Bluetooth \| 25W Mini Guitar Amp With 15 Built-In Tones, App Control, Bluetooth 5.4, 4000mAh Battery, Dual Speakers, And USB-C Charging](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
- [Donner 5W Mini Electric Guitar Amplifier, Mini Guitar Amp Portable for Desktop Practice with a Retro British Tone\(DA-10\)](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
- [Coolmusic BP80 100W Portable Outdoor Bluetooth Speaker & PA System with Rechargeable Battery, Aux/USB Input, 4-Channel Amp & Microphone Support – Powerful Sound for Busking & Events](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
- [Flatsons FBA-10 Practice Guitar Amp,10W Electric Guitar Amplifier \(White\) \| Clean/Drive Channel, 6H Working, USB-C Rechargeable,3.5mm Headphone/AUX Jack, Wireless Portable Mini Amp for Indoor Use](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
- [New Bee Electric Guitar Amp, 10W Mini Practice Guitar Amplifiers, Black \| Small Guitar Amp Portable Amplifier with Clean/Drive Channel, 3.5mm Headphone/AUX Jack, 5H Battery for Beginner Practice](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)
- [JOYO 5W Mini Guitar Amp Portable Electric Guitar Practice Amplifier with Bluetooth 5.0, Clean/Overdrive Channels, Rechargeable Battery, AUX & Headphone Out \(JA-02 II Blue\)](https://bargainpostbox.co.uk/visit/flatsons-crush20-portable-acoustic-guitar-amplifier)

## Images

![Flatsons Crush20 20W Portable Acoustic Guitar Amplifier — 1](https://bargainpostbox.co.uk/i/K3akWRUMcImtVMC-XeughrM6fHcuuWJ_B2qNEKxxbzFYoYgFR4oP_e6qdg0AlEtSAfjiGvxf00bSX3UlIapsAJB8dgXV4f0X5HQId5eswz5hGKEmKVaup7Jo.jpg)

![Flatsons Crush20 20W Portable Acoustic Guitar Amplifier — 2](https://bargainpostbox.co.uk/i/eeHU5CyMscoCBqVqkCe00lwhw_eBuP73_c6g3Ay510Vz3GaIhOumUGKzCOl8VeWS09m7aoRvaW6M_SDeO-dnEMsO8Nbsc5fy6WFONEgGdL8rW-VEpm7vrqQM.jpg)

![Flatsons Crush20 20W Portable Acoustic Guitar Amplifier — 3](https://bargainpostbox.co.uk/i/8voJJbYpkqQAOyMxzzh4tDTB7AdlXr17jrtm0S0y_XDDDz7CiTYOe1tr05JL_TCA7NHusWn2WVOQr0mJ2XLM-_9CFELa0u5OU2qiE2x9TFA7jGT-GhjOHD-_.jpg)

![Flatsons Crush20 20W Portable Acoustic Guitar Amplifier — 4](https://bargainpostbox.co.uk/i/uZCUkt7wnH7_ZkzmQ19WMwcGT4bm8jAvAwyI__kGtnsX7XEVhlGtErScIbytC-dtTRT6P11TtJTBVUjF83lfYccrHnTKKzQzYR4Zs1HBAcSm-NJDpCLTXzQP.jpg)

![Flatsons Crush20 20W Portable Acoustic Guitar Amplifier — 5](https://bargainpostbox.co.uk/i/rHS-Tu9VGEt1JcY6eMREmsqr5ufLJQ6I_3P4ZPnMzrZvq5IJi2rOPo4mLjH9TI14TxbzUEAGmtqvgAUZkDjpcEXD0RS9JuBIo4GPcfwYTJW_AhVKhDQef2KD.jpg)

![Flatsons Crush20 20W Portable Acoustic Guitar Amplifier — 6](https://bargainpostbox.co.uk/i/NPFdWBJO98eiDVfarDejUMoLi7VvcIqy7_-6PC-SASyUgZi7EtpvpSsrnZQAGvm5S_XA3mgh4HNUJVLFuIcPEMGqoaXwSIPbPiNEy0wDc_NxQzcJsyH1Xws0.jpg)

![Flatsons Crush20 20W Portable Acoustic Guitar Amplifier — 7](https://bargainpostbox.co.uk/i/ymmGBNR35ifaPtQYQhp_G6zZ_JXlMkKmeYNN2mvX90FHq2rKYdpN6BSyGeS4VaNcyR1ZxydPEJ0g1QCII3hBCRWukwF9RqgnpL0VykmX6yZl4tzfj4WScXgl.jpg)