We will send New Joyo Amp (JA-03B)

• 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