# Flatsons Crush20 20W Rechargeable Acoustic Guitar Amp with Dual Inputs

Play, sing, or add wireless backing tracks with the Flatsons Crush20, a rechargeable 20W acoustic amp with a 5.5-inch speaker.

- [Original product page](https://www.ofertitastop.com/us/product/flatsons-crush20-20w-rechargeable-acoustic-guitar)
- [View offer](https://www.ofertitastop.com/us/visit/flatsons-crush20-20w-rechargeable-acoustic-guitar)
- Market: US
- Language: en-US
- Currency: USD
- Product updated: 2026-10-19T07:07:53.780Z
- Brand: flatsons
- Model: Crush20
- MPN: Crush20
- SKU: ofertitastop-us-127563
- Category: Electronics > Audio > Stage Equipment > Wireless Transmitters
- Source store: amazon US
- Active deal: Yes
- Price: 85.98 USD
- Previous price: 99.98 USD
- Discount: 14%
- Rating: 4.4 / 5
- Reviews: 131

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

## Description

The separate guitar and vocal channels make it easier to play and sing through one compact amp, without needing a separate setup for each source. The Flatsons Crush20 also adds reverb and a two-band EQ for basic tone shaping.

Its rechargeable battery and wireless playback give it another role: it can play music from a phone, tablet, or laptop as well as amplify an acoustic guitar.

This is a portable, 20W amp built around a 5.5-inch speaker. Its feature set is aimed at practice and casual performances where guitar, vocals, and backing audio are useful in one unit.

## Best use cases

The Crush20 is designed for acoustic guitar and a 1/4-inch dynamic microphone, so it suits a singer-songwriter practicing at home or taking a simple play-and-sing setup outdoors. The two inputs are optimized differently: Channel 1 is for a dynamic mic or an active guitar, while Channel 2 is for a passive guitar. Choosing the appropriate input matters if you want to avoid unstable volume or a thin tone.

Wireless 5.3 playback lets you pair a phone, tablet, or laptop for accompaniment. That makes it more versatile than an amp intended only for instrument input, though the wireless feature is for audio playback—not a replacement for the wired guitar and microphone connections described here. You’ll appreciate it if you want one portable unit for practice, backing tracks, and basic vocal amplification.

## Strengths

Independent guitar and vocal channels give you a straightforward way to combine both sources. Reverb is available on both channels, while the bass and treble controls let you make broad tonal adjustments. The built-in play and pause controls are useful when managing wireless accompaniment from the amp instead of reaching for a paired device.

The manufacturer lists up to eight hours of battery life and a four-level LED battery display. That combination can help with untethered practice or a short outdoor session, although actual runtime can depend on use. The wood enclosure and wood color give the amp a more traditional look than a plain utility-style box.

Buyer feedback also highlights sound, appearance, battery life, and the built-in reverb. Some reviewers say its volume works for smaller settings, but those impressions are not a substitute for matching the amp to the size and demands of a particular performance space.

## Technical overview

- Name: Flatsons Crush20
- Type: Rechargeable solid-state acoustic guitar amplifier
- Output: 20W
- Speaker: 5.5-inch full-range speaker
- Inputs: Two channels, 6.35mm jack
- Controls: Two-band bass and treble EQ, reverb on both channels
- Wireless playback: Wireless 5.3, stated range of 50ft (15m)
- Battery: 3000mAh, up to 8 hours of playtime
- Dimensions: 8.5"D x 6.5"W x 6.4"H
- Material and color: Wood, wood
- What’s included: Amp, USB-A to USB-C charging cable, and product manual

## Before you decide

**Can you plug in a vocal microphone?** Yes, the listed microphone input is for a 1/4-inch dynamic mic. The manufacturer says condenser microphones are not supported, and directs microphone use to Channel 1.

**Can you play music from a phone through it?** Yes. It pairs wirelessly with phones, tablets, and laptops for playback. If it is already paired to another device, disconnect that device before trying to pair a new one.

**Which channel should you use for your guitar?** The manufacturer specifies Channel 1 for active guitars and Channel 2 for passive guitars. Check which type of guitar you have before connecting it.

## Is it worth it?

The Crush20 makes sense if you want a rechargeable acoustic amp that combines guitar and dynamic-mic inputs, reverb, EQ, and wireless music playback. It offers more flexibility than a basic practice amp focused only on guitar, while still being a compact single-speaker setup. You may want to skip it if you need inputs for a condenser mic or are choosing an amp for a performance space where a small portable unit may not meet your coverage needs.

## Images

![Flatsons Crush20 20W Rechargeable Acoustic Guitar Amp with Dual Inputs — 1](https://www.ofertitastop.com/i/k2Fky3xkTDOLbirIghQ6hhwA4L6v5UqqGGIvlhXWAm9JvGHtFuf1QdOz6hMfXi4_tKAOqRDxIquKxSZfIcFHqw_yn_ZqxZT3BC08QaxBimMUnSqIqfI3YNQ8Jg.jpg)

![Flatsons Crush20 20W Rechargeable Acoustic Guitar Amp with Dual Inputs — 2](https://www.ofertitastop.com/i/DkFQZgqmWJlGJ4ezXP7j988djU68YeznEaJyy-oiLQDrpFLbHqNfWUV3auYxkCJahPaEvqXSHBSeTDU1iC2lOe0DgzL8d8h4-KY0q2qjNj5EJTjQ40hWEJj1Rg.jpg)

![Flatsons Crush20 20W Rechargeable Acoustic Guitar Amp with Dual Inputs — 3](https://www.ofertitastop.com/i/otKydMA5E0QqUb2ypRYEg0POETc8ieXYbllVxnug6M1aCXV3yW9x-4q-o1GhJnrhREB7J1HDfqXLWQpyb3Fca587VyUB0ZQGuaufZM9NENPZcGjcSKNok8jB4g.jpg)

![Flatsons Crush20 20W Rechargeable Acoustic Guitar Amp with Dual Inputs — 4](https://www.ofertitastop.com/i/4Q4Xk54r-Zvktrk9Thj0h63JVdyQpABvWoa4apmwUV9LF_YY_zKji40qB-Abo1zBWP_MQy6zSicf_Th7epFzbhfvcPm4gOr1km4cONvRLVFew09BlAYtGS_nDA.jpg)

![Flatsons Crush20 20W Rechargeable Acoustic Guitar Amp with Dual Inputs — 5](https://www.ofertitastop.com/i/DqkB_K682ozQ8vbB6FoJcVWPKgGoN4hz5V3XGmOSyXxS5CZA5e1kmo8BoqXPkXW_HIOLeE0_lxuUqV1lTG476k40brWOK5_yupD9xJO483Rfw9N9AnGBRSujMQ.jpg)