X2 DOUBLE manufactures innovative acoustic guitar pickups, preamplifiers, and wireless systems designed to enhance instrument resonance and performance.
X2 DOUBLE (Double Acoustics Co., Ltd.) is a manufacturer of musical instrument accessories, identifying as "The color of music." The brand focuses on redefining the acoustic experience through digital innovation.
Their flagship products, including the G0 Pro and U3 series, feature integrated trans-acoustic technology. This allows players to enhance their sound with on-board effects—such as compression, reverb, and delay—controlled via the instrument or a dedicated mobile app. X2 DOUBLE systems often feature wireless connectivity and rechargeable lithium batteries, offering a cable-free performance environment for guitarists and ukulele players.
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Most X2 DOUBLE systems, such as the G0 Pro, use a built-in rechargeable polymer lithium battery. Charge it using the provided Type-C cable connected to a standard 5V USB charger (0.5A~2A).
Long press the pairing button on the preamp for about 3 seconds until the indicator flashes blue. Then, turn on the receiver; it should automatically connect, indicated by the receiver light turning green.
Many models, like the G0 Pro, are designed to clamp into the sound hole wirelessly. However, for a permanent setup or if you wish to use the wired output, drilling or widening the endpin jack hole to 12mm may be required.
The G0 Pro preamp typically includes Compression, Reverb, Chorus, and Delay effects. You can switch between them using the effects selection button or configure them via the mobile app.