Yamaha s signature sound and woofer have been iconic since the 70s becoming an industry-leading model for a reason. The HS Series powered studio monitors are designed to give you the most honest precise reference possible while providing a sonic platform for you to build mixes on. Yamaha has combined acquired knowledge with state-of-the-art sound technologies to make these monitors among the most trusted in the business. For the HS4s Yamaha redefined the HS Series monitors essence in a compact travel-friendly housing. These are powerful tools to help create a wide range of audio content—from music production to video editing—that meets the expectations of creators who have limited space but don t want to compromise on quality. True and Original Sound The HS4 monitors feature qualities from their predecessors that are updated for new and better use with speakers quality parts. This includes a high-performance Class-D amp highly resilient MDF cabinet and woofers and soft dome tweeters that deliver a sound faithful to the source despite their small size. They also feature proprietary Twisted Flare Port technology that reduces air turbulence noise in the bass reflex port providing clear and accurate bass. That s the secret to why the HS4 s deliver outstanding resolution sound image and depth with a flat response across all bandwidths without any coloring of the original sound. Inputs and Controls to Fit Any Use CaseThe rear panel of the HS4 s are equipped with combination XLR/TRS phone RCA and stereo mini jacks. This allows you to connect to a wide range of professional and consumer equipment such as computers audio interfaces audio mixers and electric instruments. The most commonly used features—power button volume knob and headphone jack—are located in the front for easier access when in use. Sound Tailored to Your EventThe sound produced by speakers is sometimes affected by the surrounding environment. The rear panels of the HS4 are equipped with ROOM CONTROL and HIGH TRIM functions that allow you to adjust and achieve the ideal sound for any environment such as reducing the unneeded low end that can often occur when speakers are placed next to walls. Portable and CompactThe compact size of the HS4 was created thanks to the highly efficient Class-D amp. Using one amp for two speakers has enabled Yamaha to reduce the weight of the speakers. They take up little space even in a small bedroom studio and are easy to take with you on the road.