The finest in Commercial Electrostatic Speaker Technology. Built by hand • Proven by Physics • Heard by those who dare.
The CS890 by RezCom and SoundLab isn’t just another commercial speaker—it’s a revolution in acoustic performance. Engineered for large, acoustically difficult venues, the CS890 was designed from the ground up to conquer spaces that chew up and spit out traditional speakers. Whether you’re outfitting a cathedral, a gymnasium, or a multi-use auditorium, this electrostatic loudspeaker delivers stunning clarity in environments where echo, muddiness, and feedback are usually the norm. Speech sounds immediate and lifelike, as if the speaker is right beside you. Light musical performances—violins, acoustic guitars, piano—are intimate and emotionally rich, while recorded tracks play back with all the finesse and depth originally intended by the recording engineer. Unlike conventional speakers that scatter sound and excite every reflective surface, the CS890 controls its output with laser precision. It projects with a 90° horizontal and 40° vertical dispersion, producing articulate, even sound that wraps the audience without overwhelming the space. In a recent live demo, the CS890 held an 80 dB level with remarkable clarity at over 120 feet—without any need for a power amp rack the size of a refrigerator. From the moment it’s powered up, the CS890 commands attention. And with customizable finishes, handles, mounts, feet, grilles, and input connectors, it looks every bit as professional as it sounds.
The CS890TWS by RezCom and SoundLab takes everything great about the CS890 and re-engineers it for permanent wall-mounted dominance. Designed for theaters, gymnasiums, and other high-ceiling venues, this electrostatic loudspeaker brings pristine sound directly to the audience with zero guesswork. Its signature 15° front slant aims the audio sweet spot right where it needs to go—downward into seated rows or activity zones—making installation as simple as basic right-angle math. Whether flanking a movie screen or lining a basketball court, the CS890TWS delivers with the same stunning clarity and feedback-resistant performance as its sibling, but with the added durability and mounting precision required in high-impact spaces. Its electrostatic panel delivers crisp, articulate sound with a tight 90° x 40° dispersion pattern that avoids ceiling and floor reflections and keeps reverb at bay. In real-world use, the CS890TWS has held a solid 80 dB with crystal clarity at over 120 feet. The front-ported design delivers clean, punchy low-end without buildup or boom, even when mounted close to the wall—thanks to a U-shaped bracket that provides the ideal spacing for airflow and rear access. Finished with custom hardware, grille options including steel mesh, and professional-grade input connectors, this speaker looks as solid as it sounds.
The CS390 by RezCom and SoundLab may be the most compact speaker in the lineup, but don’t let its size fool you—this is a clarity-first loudspeaker purpose-built for precision, articulation, and flexibility. Originally designed as the blueprint for the larger CS890, the CS390 focuses its output on speech and recorded music, with an ultra-light 3" sub that offloads most of the audible frequency range into the electrostatic panel—resulting in a jaw-dropping level of vocal and midrange detail. Whether used in seminar rooms, teaching spaces, or tucked into hard-to-cover zones of larger venues, the CS390 delivers sound that’s focused, articulate, and astonishingly natural. At under 20 pounds, it mounts easily with a standard VESA bracket and is ideal for installations where space and simplicity matter. In practice, it’s become a go-to for hearing-impaired sections of churches, as well as schools, libraries, or conference rooms where clear speech and detailed playback are essential. Whether paired with a digital whiteboard, seminar mic, or classroom projector, the CS390 delivers immersive sound without ever becoming intrusive.
The SoundLab Ultimate isn’t just a speaker—it’s a sonic monument. Crafted for audiophiles who demand nothing less than acoustic truth, the Ultimate transforms any dedicated listening room into a front-row seat at the original performance. It’s powered by SoundLab’s most advanced full-range electrostatic panel, featuring ultra-low mass, fully iso-phasic drive, and patented Distributed Resonance technology. Every note, every transient, every breath in the recording is rendered with breathtaking realism. And because it radiates from a full-height line source, the soundstage is enormous yet eerily precise—no "sweet spot" required. You don’t just hear the performance. You step inside it. Whether you’re immersed in vinyl, high-res digital, or tape playback, the Ultimate doesn’t interpret your music—it reveals it, completely uncolored and emotionally intact. Its modular, faceted-panel design maintains perfect symmetry and control at any volume, while proprietary charge-stabilization circuitry ensures reference-grade consistency across time and temperature. Built entirely by hand and tailored to your finish preferences, the Ultimate is less a speaker and more a lifelong instrument of discovery.
The SoundLab Audiophile is proof that you don’t need massive scale to achieve massive realism. Designed for more intimate listening spaces, this full-range electrostatic speaker brings SoundLab’s legendary transparency and line-source geometry into a compact form factor that’s ideal for nearfield or moderate-size rooms. It’s perfect for serious music lovers with limited space but unlimited expectations. With the same ultra-low-mass membrane, full-range electrostatic panel, and iso-phasic drive found in its larger siblings, the Audiophile delivers clarity, imaging, and musical detail at a level most “big” speakers can’t touch. Whether positioned in a studio, library, or cozy listening room, the Audiophile excels at placing you inside the performance. You hear the bow across the string, the breath before the note, the reverb tail from a distant room—details that dynamic drivers often smear or bury. And despite its modest footprint, the Audiophile projects a full, coherent soundstage across a wide horizontal plane, thanks to its faceted-panel design and natural dispersion. This isn’t a scaled-down compromise. It’s a distilled reference experience.
The SoundLab Majestic delivers everything the name implies: sweeping dynamics, immersive soundstaging, and a refined architectural presence that elevates any room it’s placed in. As a full-range electrostatic loudspeaker, it brings you the same core technology as the flagship Ultimate—Distributed Resonance, iso-phasic drive, and a full-height line-source panel—but with a more space-conscious, decor-friendly form. The Majestic was designed for listeners who want breathtaking transparency without surrendering their living space to traditional monoliths. Its open, airy voicing and lightning-fast transient response reveal the heart of your recordings with effortlessness and poise. Whether you’re seated dead center or off to the side, the Majestic’s vertical line-source geometry keeps the imaging coherent and balanced. You don’t lose resolution with movement. You gain perspective. From solo vocals to sweeping orchestral passages, this speaker delivers natural tone, scale, and emotional realism—without ever sounding analytical or forced. And with customizable wood frames and grille options, it’s a piece of sonic art as much as a reference instrument.