Vonyx SMN30B The Vonyx SMN30B Active Studio Monitors gives you a pair of professional-quality 3″ speakers. Ideal for referencing as well as multimedia use, the SMN30B monitors deliver a flat frequency response. So they’re a great entry-level solution for studio recording, mixing, and mastering duties. Not to mention, these 3″ monitors are quite small so they’ll fit nicely on any desk while leaving plenty of room. On the back panel, you’ll find volume, bass and treble controls so you can fine-tune your adjustments to suit your room and preference. On the SMN30B, the left speaker features analog amplifiers built-in. While the right speaker is passive, so setup is made simple. All you need to do is connect the left speaker into AC Power; then, connect the included speaker wire from the left into the right and you’re ready to go. Above all, these SMN30B Studio Monitors bring a new level of performance to affordable studio monitors!