Quarto Audio Solutions

Sound Made Visible

We create sonic sculptures — handcrafted DML speakers where engineering becomes art. No box. No cone. No compromise.

QAS Vitra - Transparent DML Speaker
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Designed in Rijeka,
Crafted for You

After thirty years of building conventional speakers, I discovered something that changed everything. Distributed Mode Loudspeaker technology doesn't fight resonance — it embraces it, spreading sound across an entire vibrating panel.

The result? Speakers that look like nothing else, sound unlike anything else, and create experiences that conventional boxes simply cannot match.

"I wanted to create objects that make people stop and ask 'What is THAT?' — pieces that belong in a gallery as much as a listening room."
V
Velibor Vučković
Founder & CEO, Quarto d.o.o.

Transparency

Literal and conceptual. You can see through our speakers, and we're honest about everything they can — and can't — do.

Craftsmanship

Every speaker handmade with premium materials.

Artistry

Speakers as functional sculpture.

Innovation

Technology that enables new experiences.

Distributed Mode Loudspeaker

Unlike conventional speakers that push air with a piston-like cone, DML technology creates sound through distributed bending waves across the entire panel surface.

01

Exciter-Driven Panels

Instead of traditional cone drivers, we use precision exciters that transform flat composite panels into vibrating sound sources. The entire surface becomes the speaker.

02

Diffuse Sound Field

DML creates naturally diffuse sound radiation, filling your room without the "sweet spot" limitations of conventional speakers. Music everywhere, not just in one chair.

03

DSP Optimization

Advanced digital signal processing unlocks the full potential of DML technology. Each speaker comes with custom-tuned profiles for your specific room acoustics.

Traditional

Cone Speakers

  • Pistonic motion pushes air
  • Directional sound pattern
  • Requires "sweet spot" positioning
  • Box resonance colors sound
  • Multiple drivers need crossovers
VS
QAS Technology

DML Panels

  • Bending waves across entire surface
  • Wide, diffuse sound radiation
  • Room-filling without sweet spot
  • Open baffle — no box resonance
  • Single surface, coherent sound

Meet Vitra

QAS Vitra DML Speaker

Vitra

Open Baffle DML Floorstander

The Vitra is QAS's brand-defining product — a transparent, slanted U-frame open baffle speaker that embodies all our values. The carbon fiber panel floats within a precision-machined acrylic frame, creating a visual experience as striking as its sound.

Watch the panel move to your music. Experience sound filling your room without boundaries. This is what happens when engineering becomes art.

Panel
Carbon Fiber
Dimensions
970 × 290mm
Exciters
4× Xcite XT32-8
Frame
Acrylic Crystal
Price TBD / pair
Inquire Now

What Makes Vitra Special

Handcrafted

Every speaker built by hand in Rijeka

Transparent

Crystal acrylic frame you can see through

Carbon Panel

6mm sandwich for optimal resonance

Room-Filling

Diffuse sound without sweet spot limits

QAS Levitas Kit

Experience DML technology with your own hands. Our DIY kit brings the magic of floating panel speakers to builders who want to create something extraordinary.

01

Plans Only

PDF instructions, BOM, DSP file

€49
02

Core Kit

Panel + exciters + wiring + hardware

€299
03

Complete Kit

Core + frame + base + suspension

€449
04

System Kit

Complete + amplifier + cables

€699

Levitas

"Build your own floating DML speaker"

Configuration
2-way system
Panel
ACP Dibond 910×320mm
Response
35Hz – 20kHz
Build Time
2-3 hours
Skill Level
Beginner-Intermediate
Support
Video guides included
Request Kit Info

Complete Experience

Your room is unique. Your QAS system should be tuned for it. We offer services that optimize your speakers for your specific environment.

Remote Room Tuning

Send us your room measurements, we create a custom DSP profile optimized for your space. Delivered remotely to your amplifier.

From €150

Annual Support

Unlimited DSP adjustments, priority support, and firmware updates. Your speakers evolving with your needs.

€200/year

On-Site Installation

Personal visit for complete system setup and acoustic optimization. Available in EU region.

Day rate + travel

Watch & Listen

Start Your Journey

Whether you're interested in our flagship Vitra, exploring DIY kits, or just curious about DML technology — we'd love to hear from you.

Location
Rijeka, Croatia
Website