Italian loudspeakers tend to follow their own playbook, and the Opera Callas Diva Special Edition distributed in the U.S. by Fidelity Imports, leans into that identity without apology. Priced at $13,999, this is a reflex, floor-standing design with a rear-firing radiation system (dipole), built around the kind of materials and construction choices that set Italian brands apart: hand-crafted wood cabinetry, leather-clad baffles, and tank-like assembly that feels more atelier than assembly line.
Whether the leather actually changes the sound is still a matter of debate, but as with most things Italian, it’s as much about feel and intent as measurable outcome.
There’s also a clear voicing philosophy here. Like most offerings from Sonus faber and Opera, the goal isn’t clinical neutrality; it’s a more romantic, expressive presentation that leans into tone and texture. That doesn’t mean these speakers lack drama; if anything, they just deliver it with better timing and less shouting over Sunday gravy at Nonna’s house. Think Sophia Loren, not a reality TV meltdown—controlled, confident, and fully aware of the effect… the kind of presence that makes a room go quiet when she crosses her legs, looks your way, and lets you wonder if you’re worth the match.
Fidelity Imports is pushing Opera hard in the U.S. right now, and it’s not difficult to understand why. Paired with electronics from Unison Research, the system synergy is obvious—cohesive, deliberate, and unmistakably Italian. Bellissima, but not in a way that begs for attention. It just assumes you’re paying attention already.
Italian Engineering in a Tailored Suit, Not a Tracksuit
The Opera Callas Diva Special Edition is a reflex loaded, floor standing loudspeaker that combines a traditional forward firing driver array with a rear firing dipole tweeter system. It’s a hybrid approach that aims to balance direct sound with controlled rear radiation, adding spatial cues without turning the room into an echo chamber.
Up front, the speaker uses a single 8-inch long throw woofer paired with a 7-inch midrange driver featuring a re cooked polypropylene cone and phase plug. High frequencies are handled by a 1-inch Scan Speak 9700 tweeter, notably run without ferrofluid and incorporating a double decompression chamber, choices that typically favor openness and low mechanical damping over sheer robustness.
Around back, Opera adds two 1-inch tweeters in what it describes as a “natural dipole” configuration. This rear array expands the soundstage by introducing ambient high frequency energy, effectively making the system a 3-way plus rear dipole design rather than a conventional forward only speaker.
The crossover network is relatively straightforward, using 12 dB per octave slopes across all drivers, woofer, midrange, front tweeter, and rear tweeters, with crossover points centered approximately at 200 Hz and 2,000 Hz. This suggests a focus on phase coherence and smoother driver integration rather than aggressive filtering.
Frequency response is rated at 30 Hz to 25 kHz, covering full range playback without immediate reliance on a subwoofer. Sensitivity is specified at 90 dB (2.83V at 1 meter), making the speaker reasonably amplifier friendly, though the 4 ohm nominal impedance with a minimum above 3.2 ohms means it will benefit from stable current delivery.
Power handling is listed at 240 watts without clipping, and placement guidelines recommend at least 10 cm, about 4 inches, from the rear wall, which is modest considering the inclusion of rear firing drivers.
Physically, the Callas Diva Special Edition is substantial: 116 x 37 x 53.5 cm (H x W x D), approximately 45.7 x 14.6 x 21.1 inches, and each speaker weighs 65 kg, about 143 pounds, including its metal base. This is not a lightweight cabinet, so think carefully about which relative still has the energy to help you move it after sausage and peppers. And don’t forget the cannoli. Marone!
Italian Soul, British Precision, No Passport Required
Fidelity Imports had a lot of rooms at AXPONA. Enough that you start making choices. I only had time for a few. This one, and the Ruark Audio room were the ones that actually made me stop, close my eyes and listen, and silently wish that I didn’t have 30 more rooms to cover on the next two floors.
Part of it was the system; Opera speakers, Unison Research electronics, and the new Michell Gyro Turntable spinning records like it knew that a certain American competitor was MIA and that this was its moment to make everyone take notice.
But it was also the reaction. People didn’t just walk in and walk out. They slowed down. Took a step closer. Leaned in to look at the front baffle, then drifted over to the turntable like it might tell them something if they got close enough. Weird that. Especially because it happened more than a few times.
Nobody rushed. Nobody talked too loud. That’s usually a sign. People stood along the back of the room and listened.
I wasn’t the only one who noticed. And in a show full of rooms fighting for attention, this one didn’t have to. Steve Jain needs to make this set-up a permanent hi-fi show experience.
The room was driven by the Unison Research Unico PRE V2 and Unico DM V2 power amplifier. Together, they retail for $18,498 USD. That’s not inexpensive, but in the context of AXPONA, it sits well below many of the larger systems on display.
The Unico DM V2 is a high power, dual mono hybrid design using Unison Research’s A.S.H.A. Class A-AB output stage. The emphasis is on current delivery and stability into more demanding loudspeaker loads rather than chasing extreme specifications.
The Unico PRE V2 is a fully balanced preamplifier with a tube based input stage. It includes a well equipped MM/MC phono stage with selectable gain and loading, making it a viable option for vinyl playback without requiring an external phono stage.
There is no built in streaming platform or Bluetooth support. That appears to be a deliberate choice, leaving digital source selection to external components.
The PRE V2 does include an internal DAC based on the Sabre ES9018K2M converter. It uses a balanced output stage designed to integrate with the tube input section, with the goal of maintaining consistent tonal balance between digital and analog inputs.
Digital connectivity includes USB-B, two S/PDIF, and two optical inputs. USB supports PCM up to 384 kHz and native DSD up to 256, along with DoP up to 128. S/PDIF and optical inputs support resolutions up to 192 kHz.
The Unico DM V2 is rated at 220 watts into 8 ohms and 340 watts into 4 ohms in stereo operation, with stability down to 2 ohms. In bridged mono configuration, it delivers 650 watts into both 8 ohm and 4 ohm loads.
My biggest takeaway from this room? Synergy matters. A lot.
Having spent time with and reviewed some of Unison Research’s tube amplifiers, the new pairing has a lot more palle, but it doesn’t trade away the qualities that made those designs stand out. The tonal balance, clarity, and sense of flow are still intact. It just brings more control and authority when the music asks for it.
Unison deserves your attention. So do these Opera loudspeakers. They’re expressive without being aggressive. They don’t grab your Members Only jacket and threaten you with brute force. They take a different approach and pull you in, keep you there, and let the music do the work.
There’s something to that. Not everything needs to hit you over the head to make its point.
More info at: operaloudspeakers.com | unisonresearch.com | michellaudio.com
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Cheapskate Andy
April 23, 2026 at 12:38 pm
Wonderful room write-up but am I the only noticing a very bad trend?
$30,000+ is becoming the new point of entry for a good system?
Epic failure.
Asa
April 23, 2026 at 4:31 pm
When I saw that first image w/o looking at the title/copy, I swore it was an Aperion speaker.
The finish/shape look identical to these (I have the V6Ts):
https://www.aperionaudio.com/products/verus-v8t-tower-speaker
I don’t think the French company would appreciate the comparison…lol.
Ian White
April 23, 2026 at 5:55 pm
Asa,
Sorta but they look rather different in person. For the extra $10,000, it better look different.
IW