JVC RVB99BK Kaboom! Portable CD Boombox

The JVC RV-B99BK Kaboom! is a portable boombox that lives up to its name with a sound system engineered for maximum impact. At its core are two 6.5-inch woofers paired with two 3.25-inch full-range drivers, powered by 26 watts per channel of amplification. The result is bass response that reaches down to approximately 50 Hz — a figure that puts many home speakers to shame, let alone other portable units. The integrated CD player and auto-reverse cassette deck cover physical media, while the microphone/guitar input with blending capability turns the Kaboom! into an impromptu performance system for musicians and karaoke enthusiasts alike.

Sound shaping is handled through three equalized presets — Clear, Pop, and Beat — giving listeners quick access to tonal profiles suited to different genres. The Active Clear Sound (ACS) feature adds an intelligent touch, automatically boosting high frequencies when they cross a set threshold to maintain clarity at higher volumes. Practical features include a backlit LCD display, a clock with timer function, and a thick padded shoulder strap with a built-in remote pouch for transport. The Kaboom! is undeniably large and built for an era before wireless streaming, but for anyone who prioritizes raw acoustic power and hands-on audio control, it remains a remarkably capable portable sound system.