Joyo BA-30 Vibe Cube Small Bass Combo

Joyo BA-30 Vibe Cube Black — 30W Portable Bass Combo with Bluetooth and OTG Recording

The Joyo BA-30 Vibe Cube is a 30W micro bass combo amplifier built for bassists who need full-range tone in a backpack-sized package. Weighing just 2.7 kg and finished in classic black, this compact amp fits on a desk or in a gig bag without sacrificing low-end authority. It is the right choice for players who want a single, do-it-all practice and livestream rig.

What sets the Vibe Cube apart from other micro bass amps

Most practice amps rely on a single small driver, but this unit pairs a 4-inch full-range speaker with a 113 x 113 mm passive low-frequency radiator to extend bass response without adding bulk. A dedicated OTG Type-C USB port turns the combo into a plug-and-play audio interface for phones, tablets, and computers.

Speaker system and power — punchy low end from a 4-inch cube

The hybrid speaker/radiator design gives this amp surprising depth. A 30W rated output drives the main driver while the radiator reinforces sub-low frequencies for tight, controlled punch.

• The 4-inch full-range driver handles mids and highs with clarity across slap, fingerstyle, and pick playing styles.
• Low-Frequency Radiator: 113 x 113 mm passive radiator — extends bass response without port noise
• Rated power of 30 W drives the main driver for strong projection during home practice and small jams

Tone shaping — sweepable 3-band EQ with built-in compressor

A sweepable midrange lets players target problem frequencies, while the integrated compressor evens out dynamic swings between aggressive picking and softer passages.

• EQ Controls: Bass, Mid, Treble — standard 3-band shaping for fast, familiar adjustments
• MID FREQ Selector: 200 Hz to 2000 Hz — pinpoint the exact midrange frequency to cut mud or add bite
• Built-in compressor with a dedicated knob — smooths attack transients and balances slap vs. fingerstyle dynamics

Connectivity and power — Bluetooth, OTG, headphone out, and dual power options

Bluetooth 5.1 streams backing tracks, OTG USB-C sends a clean digital signal to a DAW, and a 3.5 mm headphone jack enables silent practice.

• Bluetooth: Version 5.1 — low-latency wireless streaming from phone or tablet
• OTG Port: USB Type-C with dedicated volume knob — record directly to phone or computer without an external interface
• Headphone Output: 3.5 mm jack, 32 Ω impedance — full-range silent monitoring
• Power is supplied by the included AC adapter (20 V / 2 A) or a USB-C PD 2.0+ power bank (65 W+) for maximum portability.

Who should buy this instrument

Bedroom players benefit from the headphone output and Bluetooth streaming. Content creators get a clean OTG USB-C signal into a phone or DAW. Traveling bassists appreciate the 2.7 kg weight and dual power options.

The Vibe Cube design philosophy — small enclosure, large low-end response

The unit sits within the brand's BA Series of bass amplifiers, focused on compact, feature-rich combos. The engineering goal remains a small enclosure delivering a disproportionately large low-end response through its speaker and radiator pairing.