Tozzi One is a high-end single driver loudspeaker. It incorporates cutting-edge full-range driver engineering with a sub-compact enclosure designed with the latest in industrial design techniques. Its range and bass performance are remarkable for this class of purist miniature loudspeaker.

Tozzi One uses a single custom high-performance all-range drive unit, the Sota 5, also designed by Mark Fenlon, it produces exceptional range for a sub-compact speaker. Output stretches from upper bass notes to beyond the upper limit of human hearing. The advanced alloy cone has a very shallow profile, and with the signature Tozzi waveguide, gives excellent dispersion of sound energy into the room. Long-stroke suspension avoids excess compression producing clean, precise and phase-accurate sound. No filter is used; the output of the amplifer goes direct to the driver.


USD $445.00

per pair

Key Features

MarkAudio-SOTA utilizes a number of key features to produce the uniquely rich, natural and detailed sound of their loudspeakers. From the Symmetrical Sound Field technology to the All-Range Driver Approach, the speakers are built from the ground up with a goal to faithfully reproduce the music.

Built from the ground up
MarkAudio-SOTA loudspeakers are built from the ground up, including the cabinets, crossovers and speaker drivers. Many manufacturers choose off-the-shelf components that aren’t always a perfect match to their system design target.
Symmetrical Sound Field
MarkAudio-SOTA uses its own symmetrical technology. The single, wide dispersion, shallow-profile cone driver replaces conventional dual cone-woofer and dome-tweeter combinations.
Global Design – The best engineers and designers from around the world
The global dream team at MarkAudio-SOTA recruited a global dream panel of experts to help tune the sound character, thus creating outstanding loudspeakers for discerning listeners.
All-Range Driver Approach
MarkAudio-SOTA’s unique all-range approach offers the rich midrange that is typical of a wide-range single speaker design, while providing a full frequency range extending from 40Hz to 25kHz, and the high-impact dynamics of more typical multi-way speakers.
Money Back Guarantee
We are so confident that you’ll have no problem getting great sound from your MarkAudio-SOTA loudspeakers that we offer you 30 days to order the speakers, get them home, set them up and listen to them before final decision.
Hear Our Difference

MarkAudio-SOTA searched the world to find the best designers and engineers in their respective fields with the goal to create a unique series of loudspeaker products that provide simple and faithful musical playback. The speakers employ a number of key features, such as wide-range driver-technology and minimal control networks to produce natural, detailed music that preserves the realistic richness of voices and instruments.



High-end single driver loudspeakers




1 x Sota 5 all-range driver


90Hz – 22KHz anechoic

SENSITIVITY (1w @ 1 m):

84dB 1w @ 1m

IMPEDENCE (Norminal):

6 Ohms


15w Nominal (30w peak).
 High quality amplification is highly recommended. Please see our technical page for more in-depth advice

Class A/B @ 8 ohm per channel:

25W to 50W

Class A @ 8 ohm per channel:

5W to 12W

Class D @ 8 ohm per channel:

20W to 40W


200mm x 126mm x 200mm
15.75in x 11.8in x 11in

WEIGHT (Each):

1.42 Kg
3.13 lbs




“…if you seek a refined, quick and nimble, accurate take on music; a speaker skilful at PRAT (pace, rhythm and timing), with a sweet vocal presence and fundamentally neutral in tone, then the Viotti One is a speaker you must hear.”

Viotti One

“These speakers sound excellent right out of the box and only improve with time, save for bass performance. If you’re a fan of classical or jazz music, you might not notice, of course.”

Viotti Review

“Their smooth, open sound, precise imaging, and ability to draw out fine detail in everything from indie rock to classical make it a great all-purpose speaker.”

Viotti Review

The speaker offers lots of detail but always at the service of a balanced musical fabric. Nothing sticks out, no frequency shouts, nothing blurts. It’s exceedingly well behaved.

Viotti Review

“For a small company, ‘Follow your dreams’ is often going to create better products than ‘follow the money”

Viotti Review

“When you sit down and really listen to what they can do, you realize they are smooth but also incredibly atmospheric. Their abilities transcended my expectations”

Viotti Review