Diapason Loudspeakers Get a Serious U.S. Relaunch With MoFi Distribution Behind Them

Italy has never suffered from a shortage of loudspeaker manufacturers, gorgeous cabinetry, or engineers willing to explain why everyone else has been doing it wrong for the past 40 years.

In North America, however, most audiophiles can probably name Sonus faber before the espresso machine reaches operating temperature. Opera has also enjoyed considerably more visibility in recent years. Diapason? Unless you have been around high-end audio for a few decades, there is a reasonable chance the name draws a blank.

It shouldn’t.

Founded in Brescia in 1987, Diapason has been building some genuinely distinctive Italian loudspeakers for almost four decades. The company never achieved anything close to the North American profile of Sonus faber, but that may finally be about to change: MoFi Distribution has been appointed the exclusive U.S. distributor for Diapason, effective immediately.

And this is not just another distributor collecting an obscure European brand because there was an empty square on the line card. MoFi Distribution already handles more than 20 audio brands including Wharfedale, QUAD, Mission, Audiolab, Leak, Thorens, EMT and MoFi Electronics, with U.S. operations in Chicago and warehouse/service facilities in Las Vegas. 

For Diapason, that kind of infrastructure could be exactly what has been missing.

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Diapason Has Been Here Before

Calling Diapason an unknown company would be unfair. Calling it criminally underexposed in North America would be closer to the mark.

The Adamantes II was reviewed by Stereophile in the 1990s, when Diapason reportedly had around 15 U.S. dealers. The $3,998/pair standmount was praised by Robert Harley for its craftsmanship and musical involvement, demonstrating that Diapason was hardly some recent Kickstarter project operating from the back of somebody’s Fiat. 

Distribution and visibility, however, have been inconsistent over the decades, while Sonus faber evolved into one of high-end audio’s most recognizable luxury brands.

Diapason kept building speakers in Brescia.

Founder Alessandro Schiavi started the company after working as a live classical recording engineer. Unable to find a monitoring loudspeaker that met his requirements, he developed the Prelude I in 1987. That origin story continues to shape the company’s design philosophy: its speakers are voiced using live music as the reference, rather than merely comparing prototypes against other loudspeakers. 

Very Italian. Why trust another loudspeaker when you can argue with an orchestra?

Wood Is More Than Decoration

There is an obvious aesthetic connection between Diapason and some of Italy’s better-known loudspeaker companies, but the cabinets are not merely expensive furniture with drivers installed afterward.

Diapason treats the enclosure as part of the acoustic system. Its Classic models use substantial amounts of solid Canaletto walnut, while the multifaceted front and rear surfaces found on models such as the Adamantes and Karis are intended to reduce diffraction and improve dispersion. 

The company’s Direct Drive approach is another longstanding feature. On models including the Adamantes V, Karis III and Micra III Excel, the midwoofer is connected without a conventional low-pass filter, reducing crossover complexity and shortening the electrical path. 

Diapason currently divides its loudspeakers primarily between its Classic and Reference collections. 

Micra III Excel: Compact two-way standmount using an 11 cm midwoofer, 25 mm silk-dome tweeter, rear bass-reflex loading and a handmade walnut cabinet. Rated frequency response is 60 Hz to 25 kHz with 87 dB sensitivity. 

Karis III: Another compact two-way design, but with Diapason’s more recognizable faceted enclosure. It uses a 110 mm midwoofer, 19 mm silk-dome tweeter and Direct Drive topology. 

Adamantes V: The modern version of a design first introduced in 1989. The two-way standmount uses a 180 mm midwoofer and 19 mm silk-dome tweeter inside an elaborate solid-walnut cabinet. Frequency response is specified at 45 Hz to 25 kHz with 90 dB sensitivity. 

Àstera: A Reference Collection standmount that moves beyond the Classic models with a 29 mm silk-dome tweeter, Nextel-coated paper-cone woofer, extensively matched components and hardwired Van den Hul internal cabling. 

Dynamis: The considerably more imposing three-way floorstander uses a 300 mm aluminum-cone woofer, 180 mm paper-cone midrange and 29 mm silk-dome tweeter. Diapason specifies extension down to 25 Hz and an 89 dB sensitivity rating. 

But the model that makes this particular distribution announcement much more interesting is the Didascalìa.

Enter Paolo Tezzon

Diapason added Paolo Tezzon as Head of Research & Development in 2025, and anyone familiar with modern Italian loudspeaker design should recognize the name. 

Tezzon spent approximately 18 years at Sonus faber, including almost 14 years running R&D, and worked on products including the Olympica Nova, Minima Amator II and Palladio collections. He joined Sonus faber in 2004 and became R&D manager in 2006. 

That is not exactly hiring the guy who designed the Bluetooth speaker next to the cash register at Autogrill.

His first major Diapason project is the Didascalìa, and notably, it is reported to be the first Diapason loudspeaker not designed by Schiavi. 

The two-way floorstander uses Diapason-designed drivers manufactured by Scan-Speak, including a 29 mm silk-dome tweeter and dual 180 mm midwoofers, supplemented by side-firing passive radiators. The cabinet combines Panzerholz structural elements, CNC-machined walnut/HDF sections and aluminum damping shelves, while the front baffle mechanically time-aligns the driver centers. Frequency response is rated at 35 Hz to 30 kHz with 90 dB sensitivity and an 8-ohm nominal impedance.

MoFi Managing Director Norbert Schmied specifically cited Tezzon’s future R&D work as one of the reasons the distributor took on the brand, while Tezzon noted his existing professional relationships with Schmied and MoFi Director of Sales Dan Wakefield. 

That combination of Schiavi’s history, Tezzon’s engineering background and MoFi’s distribution network gives Diapason something it has rarely enjoyed in America at the same time: product, experience and reach.

There is one geographic footnote worth making. The new agreement specifically names MoFi as Diapason’s exclusive United States distributor. Diapason’s current international distributor page still lists Red Leaf Audio for Canada, so this is not technically a single new North American distribution agreement. 

The Bottom Line

Sonus faber deservedly became the international face of Italian loudspeaker manufacturing, while Opera has continued to demonstrate that beautiful cabinetry and sophisticated engineering are hardly limited to one address in Northern Italy.

Diapason has been quietly making its own argument since 1987.

The difference now is that North American audiophiles may actually get a better opportunity to hear it.

MoFi Distribution gives Diapason an established U.S. dealer network, marketing organization, logistics operation and service infrastructure. Paolo Tezzon gives the company an experienced engineering leader with deep roots in one of Italy’s most successful loudspeaker manufacturers. And Alessandro Schiavi’s original designs remain available alongside the new generation. 

After nearly 40 years of flying beneath the radar, Diapason might finally require a higher altitude.

Andiamo.

For more information: diapason-italia.com

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