Finally, The BOSS / WAZA-AIR is back in stock after a long time of low supply due to its huge popularity. The BOSS / WAZA-AIR personal amplifier system, which offers an unprecedented experience, combining high-quality guitar amplifiers and effects with innovative BOSS stereophonic technology. It is a headphone-type amplifier, yet it sounds like an actual amplifier. Furthermore, the completely wireless system offers a stress-free performance. If you play your favorite music via Bluetooth, you will feel as if you were at the artist side. Please get this as soon as possible!