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Features
- Private bass practice: Connect directly to the bass and listen through wired headphones; suited to bedrooms, apartments, dorms, hotels, travel, and backstage warmups; no built-in speaker and not intended for room or stage amplification
- AUX practice input: Connect a phone, tablet, or music player through the 3.5 mm AUX input for lessons, metronomes, songs, or backing tracks; wired audio only, with no Bluetooth streaming or USB recording
- Tone and mixer controls: Shape the bass tone and set a comfortable level; output varies with pickup strength, instrument volume, battery condition, headphone sensitivity, and plug seating; start low and raise gradually
- Direct-plug fit guidance: Built-in 1/4-inch plug connects without an instrument cable; check clearance before ordering because recessed, angled, or tightly positioned bass output jacks may prevent the unit from seating fully
- Pocket-size AAA power: Weighs 76g and measures approximately 3 x 3.15 x 1 in; runs on two matching AAA batteries; install with correct polarity, do not mix old and new cells, and remove batteries before long-term storage
Description
Does this work with all bass guitars? The JA-03 bass is compatible with most bass guitars that use a standard 1/4" output jack. Please check your instrument's jack position before purchasing. Can I use headphones for silent practice? Yes. The JA-03 bass features a 3.5mm headphone output that allows private practice without disturbing others. Can I play along with music from my phone? Yes. The built-in 3.5mm Aux input lets you connect phones, tablets, or MP3 players for practicing with backing tracks. Are batteries included and is it rechargeable? The package includes 2 AAA batteries for immediate use. This model is battery powered and does not support USB charging. Is this suitable for beginners? Yes. Its simple plug-and-play design and easy Tone/Mixer controls make it suitable for beginner bass players and everyday practice. Mini Bass Headphone Amp Wireless Guitar System Wireless Guitar System Wireless Mic System Wireless Page Turner Fits most basses with standard 1/4" output. Fixed plug doesn’t rotate. Recessed, angled, side-mounted, or deeply set jacks may need a short extension cable or adapter. Check jack space before buying. No built-in speaker. Requires wired 3.5mm headphones for silent practice. Does not project sound into the room. Use standard 3.5mm wired headphones. Bluetooth/USB/wireless not supported. Sensitivity varies, affecting volume 1) Fresh AAA batteries (correct polarity); 2) Headphones in PHONES, not AUX; 3) Bass volume up; 4) Start amp low, raise gradually; 5) Plug fully inserted; 6) Test other wired headphones. If AUX plays but bass silent, plug may not contact—use extension cable for recessed/angled jacks For silent practice, not high monitoring. Volume depends on pickup type, bass volume, battery, headphone sensitivity, and plug contact. Use fresh batteries, raise bass output, fully insert plugs, test other headphones Tone and Mix offer basic adjustment, not detailed shaping. Effect varies with pickups/headphones. Start near middle, play and adjust one control at a time. If no change with another bass/headphones, contact seller. AUX = input for phone/tablet/player (backing track). PHONES = output for wired headphones (hears bass + track). Do not plug headphones into AUX—it won't work. Check: fresh batteries; fully insert plugs; lower amp volume; reduce Tone if treble harsh; use good AUX cable; test without AUX device; try other headphones. If crackling on cable movement or persists, contact seller. Not for professional recording or live performance. Designed as a portable silent-practice tool for beginners, casual players, travel, and late-night use. Lacks studio-grade tone, advanced effects, stage volume, and full-amp sound shaping.
Brand: AITONE
Color: Black
Compatible Devices: Double Bass, Guitar
Material: Metal, Plastic
Product Dimensions: 3"D x 3.15"W x 1"H
Compatible Devices: Double Bass, Guitar
Number of Bands: 2
Power Source: Battery Powered
Output Channel Quantity: 1
Amplifier Type: Solid State
Connector Type: 3.5mm Jack, 6.35mm Jack
Color: Black
Enclosure Material: Metal, Plastic
Item Dimensions D x W x H: 3"D x 3.15"W x 1"H
Item Weight: 40 g
Brand: AITONE
Model Name: Bass Headphone Amplifier
Number of Items: 1
Item Highlight: Direct plug, 3.5 mm AUX input, wired headphone output, tone and mixer controls, two AAA batteries, pocket size
Manufacturer: AITONE
Built-In Media: 2 x AAA Batteries, Bass Headphone Amplifier, User's Manual
Item Type Name: Bass Guitar Headphone Amplifier
Model Number: AITONE-JA03B
Mfr Part Number: JA03 Bass
Warranty Description: One-year after-sale serives
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