From Reverb...

"Nux Mighty Plug - a handy silent-play gear for both guitarists and bassists, which offers various effects, modeling amplifiers, and Impulse Response (IR) cabinet models.

The built-in acoustic guitar IR models and acoustic amps lets you play regular electric guitar to simulate acoustic guitar. The embedded drum patterns can let you play along with your favorite music styles. Mighty Plug offers the ability to combine effects, amps, and cabinets to both guitar and bass players. Each instrument part has its own independent pack for amplifier models, speaker cabinets and effects.

Taking advantage of using headphones; all the effects are designed for surround sound. Besides the 3 channels and an Acoustic Guitar simulator for electric guitars there are likewise 3 channels for bass guitar.In total, you get 6 effect modules and 25 variety effects. You can choose between Bluetooth connection AUDIO mode to play along with your favorite music only or APP mode, to control the effects and customize your presets, and store it. You can also playback any music when APP mode is selected. The audio mode option is very useful when you connect any Bluetooth device where you can not install the Mighty Amp application.

Another really great feature of the Mighty Plug is the built-in audio streaming function, which lets you connect the Amplug directly to your computer with a Micro B USB cable, and you're ready to play and record."

From AliExpress...

"For Electric Guitar and Bass

Mighty Plug is a handy silent-play gear for both guitarists and bassists, featuring various effects, modeling amplifiers, and Impulse Response (IR) cabinet models. With built-in acoustic guitar IR models and acoustic amps, you can play regular electric guitar to simulate acoustic guitar. The embedded Drum patterns can let you play along with your favorite music styles.

Guitar Mode,Bass Mode

Guitar Mode: There are 3 channels and an Acoustic Guitar simulator for electric guitars.

Bass Mode: There are 3 channels for bass guitar. 6 effect modules and 25 variety effects in total.

Bluetooth Mode

You can choose the Bluetooth connection AUDIO mode to play along with your favorite music only. Or APP mode to control the effects and customize your presets, and store it. You can also playback any music when APP mode is selected. The audio mode option is useful when you connect any Bluetooth device that you can not install the Mighty Amp application.

Get Recorded

You can record your instrument without using any audio interface. Mighty Plug has a built-in audio streaming function, so you can connect the Amplug directly to your computer with a Micro B USB cable, and it is ready to play and record. A driver free* solution that helps you to produce music with direct connection. You can use the headphones output for monitoring, you will hear both your guitar and the audio from your computer.

Mighty Plug Mobile App: There are loads of pre-amp models and guitar cabinet IRs and effects available with our FREE MightyAmp app. And the best part is that you can save all the changes you made to a channel for further use.

Perfect For All Styles Ultimate Compatibility: Mighty Plug works perfectly with active/passive electric guitar and bass, and acoustic-electric guitars with piezo or magnetic pickup. The signal is crystal clear.

Also, the compact and light-weight design allows you to play comfortably on any guitar and bass body types, including acoustic guitars and ukuleles.

Specifications

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Guitar and Bass Modes.

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Acoustic Guitar Simulator with Impulse Response Acoustic Guitar Emulation.

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13 Amplifier Models. 19 Variety of Effects

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20 Impulse Response Files (Speaker Cabinet and Acoustic Guitar). 20 Impulse Response Files.

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Physical Amplifier Modeling Algorithm

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Rechargeable Li Battery. 3 Hours Playing Time. Dual Mode Bluetooth 4.2.

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Drum Beats: 10 Patterns and Metronome"

Freom an Amazon review...

"Having had a few headphone amps and practice amps offer the last few years this is a game changer.Basically every guitar sound you'd ever need in one tiny package.The app is great with some quite deep editing possible to achieve your sound. However there's an even better 3rd party app called mightier amp which is even better. I say better because you can save dozens of presets on it. Create the sound for a song name it and then save it for future use.
And better because it also allows you to use any amp/cab/effect in any way you want. Whereas the official one only allows certain combinations on the overdrive channel and others on distortion.
It's a small but nice addition.
And here's another nice thingits a headphone amp but you can play it through anything with a line in socket.
Just let that sink in a moment. Yes that's right portable speaker, hi fi and even that rubbish practice amp you bought acouple of years back.
And because the mp2 has impulse response cab simulation ( which even it's big brother Nux amps don't have ) you can almost always pick a combination that will sound good through your speaker set up.
So then it becomes a multi purpose modeling FX unit for £60ish .
I've never tried the fender Mustang micro which is the only real competition I can see for this unit. But that's £30 more and I don't see how it could be any improvement on this.
TBF it does take some fiddling with the settings sometimes. The first time I connected it to a speaker it was really boomy and had massive feedback.
But with a little playing with the noise gate settings for level and what it calls sustain that can be over come. The settings are there it's just a case of working them out
It seems sturdy and battery life is ok. Not stellar but enough.
If I lost or broke this would I buy another? Yes in a heartbeat that very same day."

I bought this in a music shop in Munich last Summer after breaking my regular Vox headphone amp. My German being non-existent and the shop assistant's English not being very good, I ended up buying this MP-2.

While I've certainly been able to get a good sound out of it, it's far more than I need or want. (Not taken with modelling amps!) So pretty soon afrer I got back to the UK, I bought a Vox and put this on the shelf.

So now it's time to sell it on!

It's in its original packaging, with USB cable and instruction booklet. The outer box has a tear in - as shown in one of the piccies. Everything else is close to 'as new'.