The NF04R is an active speaker with a built-in amplifier that enhances the reproduction capabilities and expresses rich musicality of small-sized speakers. It features dual amplification drivers for both the woofer and tweeter. Additionally, it is equipped with a filtering function that effectively corrects low frequencies, allowing you to adjust the bass according to the installation position. The speaker also includes XLR/TS combo jacks as input terminals, enabling you to connect balanced signals (+4dBu) or unbalanced signals (-10dBV) from mixers and other devices. Gotch（ASIAN KUNG-FU GENERATION） I thought it was excellent as a near-field speaker. The quality of vocals and other sounds is really good. They have a distinct presence and clarity. The only thing I feel is lacking is a bit more of the deep bass, but I suppose that's understandable given its size. On the other hand, I'm quite impressed by the fact that it produces such impressive sound from such a compact size.