The Arno 20 delivers an authentic, uncoloured listening experience, preserving the sound’s character as envisioned by the artist and sound engineers.

This is achieved through a custom 6.5” woofer, developed in collaboration with a renowned Italian manufacturer, featuring a treated paper diaphragm with a silky outer layer and a stiffer inner core that ensures fast, natural midrange response. The powerful ferrite magnet, large voice coil, and over-damped reflex system work together to provide deep, articulate bass, while the tweeter, inspired by our flagship Siena model, ensures remarkable clarity and consistency across a wide listening area.

The multi-layered cabinet reduces resonance, blending outstanding acoustic performance with Italian craftsmanship, while the premium crossover components bring every subtle detail to life with precision and musicality.

Enclosure

To ensure an authentic listening experience, sound should come only from the drivers, not the cabinet. Vibrations in cabinet panels cause distortion, so they must be as inert as possible. Rosso’s constrained layer damping, used throughout the ARNO series, minimises internal resonances by combining materials with complementary acoustic properties. This approach enhances rigidity, damping, and overall clarity. Listeners enjoy a purer sound, a more defined soundstage, and better bass response. Additionally, fibrous damping materials and air “cushions” help absorb cabinet resonances, improving energy distribution inside the speaker.

Drivers

Rosso design and develop nearly every aspect of a Rosso loudspeaker in-house. However, their commitment to advancing audio technology led us to collaborate with specialised manufacturers, crucial for achieving the highest quality. This approach was key in developing the drivers, where partnering with a renowned Italian manufacturer turned our ideas and designs into tangible, premium products. By working closely with them, we optimised every detail of the driver’s design, from materials to manufacturing processes. This meticulous engineering has resulted in a truly unique line of Rosso drivers, crafted exclusively for ARNO speakers.

Crossover

In Rosso's design philosophy, they don’t adhere to a single electroacoustic approach but choose the technique best suited to each product’s goals. They avoid rigid design constraints and focus on the most effective filtering methods to achieve the desired outcome.

The outcome is their priority, guided by both academic expertise in electroacoustics and practical experience. For the Arno20, the crossover was carefully engineered from scratch, using high-quality components from top international manufacturers, alongside exclusive, in-house developed elements like Rosso's custom coils.

True to their philosophy, they’ve implemented various types of filtering, ensuring a highly resistive and stable impedance while minimising phase variations. This avoids critical points where impedance and phase could stress the amplifier, ensuring it operates optimally and improving overall sound quality.

Hardware

All mechanical parts are made in Italy and designed by us. From aluminium vented ports to spikes and counter-spikes, to front panels milled from 8mm aluminium sheets where the drivers are housed. Even the connectors are made Rosso from pure copper, which is then plated in gold and palladium for eternal durability. Not to mention the anodised aluminium bushing with a friction lock to securely hold any type of cable.

S-A20 stand

The Rosso Fiorentino S-A20 stand is crafted to provide a solid, high-performance base for the ARNO20 bookshelf speakers. Its elegant matte black soft-touch finish complements the brand’s latest models.

Key features include a front compartment filled with marble microgranules to dissipate vibrations by converting kinetic energy into heat, improving sound quality. A wide rear channel ensures clean cable management, while easily adjustable spikes allow for quick installation. For enhanced stability and vibration control, the speaker can also be directly screwed onto the top plate, creating a solid mechanical coupling.

Made from HDF with a soft-touch paint formulation, the S-A20 blends technical functionality with refined design. The embossed Rosso Fiorentino logo on the central leather band adds a touch of elegance. The S-A20 offers both advanced performance and refined aesthetics to fully support the ARNO20 speakers.