Monoprice
Monoprice 611502 Mini Guitar Headphone Amplifier Tube Overdrive
★★★★★
Practice electric guitar or bass silently anywhere with this pocket-sized tube overdrive headphone amp from Monoprice.
$40.01*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.
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Overview
Key Features
As a musician you know you need to practice regularly to hone your skills and learn new songs
For those times when quiet is required you can both practice and hear the amplified output from your instrument using this Mini Headphone Amplifier for Guitar from Monoprice!
This amplifier is designed to provide amplification to the output of instrument level devices such as electric guitars and bass guitars
Specifications
Brand
Monoprice
Model
611502
Type
Mini Guitar Headphone Amplifier
Sound Mode
Tube Overdrive (distortion and delay)
Input
1/4" TS plug
Headphone Output
3.5mm TRS jack
Auxiliary Input
3.5mm TRS jack
Controls
Analog Gain, Tone, Volume
Power
2x AAA batteries (not included)
Pros & Cons
👍 Pros
- Extremely compact design plugs directly into your guitar's output jack for true portability
- Includes gain, tone, and volume controls for shaping your overdrive sound on the fly
- Auxiliary input lets you jam along with music from an external device
- Very affordable entry point for silent practice without a full amp setup
- Runs on two AAA batteries so there are no cables or chargers to deal with
👎 Cons
- Tube overdrive circuit produces noticeable background hiss even at moderate volume
- Only offers one sound character (overdrive) with no clean channel option
- AAA batteries are not included and will need regular replacement
- The 3.5mm headphone output may require an adapter for studio headphones with 1/4" plugs
- Plugging directly into the guitar jack can put leverage on the output jack over time
Frequently Asked Questions
Does this headphone amp work with acoustic guitars?
No, the Monoprice 611502 is designed for electric instruments with a 1/4" output jack, such as electric guitars and bass guitars. It will not amplify an acoustic guitar unless the acoustic has a pickup with a 1/4" output.
Can I play along with backing tracks using this amp?
Yes, the auxiliary 3.5mm input lets you connect a phone, tablet, or MP3 player so you can hear your backing tracks mixed with your guitar signal through the same pair of headphones.
What kind of headphones does it use?
It outputs to a standard 3.5mm headphone jack, so any wired headphones or earbuds with a 3.5mm plug will work. You may need a 3.5mm-to-1/4" adapter if your headphones have a larger plug.
Is there any background noise when using the tube overdrive effect?
Yes, Monoprice notes that the distortion effect produces some background hiss even at normal volume levels. This is inherent to the overdrive circuit and is more noticeable at higher gain settings.
How long do the batteries last?
Battery life varies with usage and gain settings, but two AAA batteries typically provide several hours of practice time. Batteries are not included with the unit.
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