Published On: October 21, 2020

Mayfly Audio Systems Debuts with Two Offerings

Published On: October 21, 2020
Last Updated on: November 1, 2020
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Mayfly Audio Systems Debuts with Two Offerings

The company's MF-201A speaker is the first to incorporate a skyline diffuser

Mayfly Audio Systems Debuts with Two Offerings

By Author: Home Theater Review
The staff at is comprised of experts who are dedicated to helping you make better informed buying decisions.

Mayfly Audio Systems - a relatively new name in the hi-fi world -- has announced the first speaker to combine a skyline diffuser and laminated cabinet, the MF-201A. In addition to its 24x24 internal diffuser, the MF-201A also boasts a frequency response of 30Hz to 20 kHz, sensitivity of 88 dB, and max power handling of 100 watts each.

The MF-301 system combines a pair of MF-201A speakers with two 301 bass modules and is equipped with a 10-inch aluminum cone woofer that extends to 15Hz. The MF-301 is available on its own, or as an upgrade to an existing set of MF-201A speakers. Both are available now on the Mayfly site: the MF-201A retails for $3,000 per pair, and the MF-301 full system retails for $12,000.

Additional Resources
• Visit the Mayfly website for more details and product specs
• Check out our Bookshelf Speaker Reviews page and Subwoofer Reviews page to read about similar products

Here's more info about the company and its offerings:

Mayfly Audio Systems, the Canadian audiophile loudspeaker company led by Chief Designer Trevor May, launched earlier this year and to fanfare. And it's no wonder. May is an accomplished electrical engineer with decades of experience designing and building HiFi and professional audio gear, guitars and custom tube guitar amps. He is also a songwriter / musician that has played on 5 albums and charted on the Top 100 on Billboard / Top 10 in Canada.

Mayfly Audio Systems presently offers two systems: the MF-201A speaker (the World's first to combine an internal skyline diffuser and CNC cut laminated cabinet) and the MF-301 system which adds high-performance bass modules which extends bass down to 15Hz.

Skyline Diffuser Technology

Until now, skyline diffusers have been wall-mounted panels made of wood or foam blocks specifically placed at varying heights. They are used to treat sound aberrations such as echo's and reflections in recording studios, concert halls and homes. May adopts skyline diffusers to the MF-201A, making a unique 24x24 internal diffuser from slices of CNC cut birch ply. Each slice is different and creates one of the skyline diffuser's 24 rows, a direct consequence of the approach. The slices are hand-glued, each a layer that comes together as the body of the cabinet itself. The approach allows May to eliminate internal reflection and diffraction artifacts, lobe tilting effects and woofer breakup. This yields more controlled midrange and better bass response - so much so that May has applied for a patent. 

"I was inspired to start Mayfly Audio Systems after reading the BBC paper on skyline diffusers and later visiting a local CNC woodworking shop. Putting the two together I wondered what the benefits of putting a diffuser inside a loudspeaker cabinet would be. The prototypes measured great, sounded great, and looked great to everyone, so I figured I had a winner," started May.

May describes being influenced by the Loudspeaker Design Cookbook where he says "author Vance Dickason re-did all of Olsen's diffraction experiments and produced very good results with a cylindrical cabinet, almost as good as a spherical cabinet. I chose a round shape to reduce external cabinet diffractions as noted by Dickason."

To get the most out of the lack of internal reflections, cabinet resonances and external diffractions May opted for a co-axial driver. "This physically aligns the tweeter and woofer so that the sound does not change too much with listening position. This really helps open-up the soundstage. The general cabinet dimensions were determined by using the Golden Ratio. Designing and tuning the cabinet was done using a lot of software simulations followed-up with a lot of measuring prototypes," he said.

"With the skyline diffuser you can control the frequencies that you want to diffuse and leave other frequencies alone. This allowed me to tune the cabinet to make the best use of the bass response of the driver but at the same time tame the mid-frequencies from rattling around inside and reflecting out of the driver opening. And additional unforeseen benefit was that the diffusers enable control of the resonance of the cabinet itself. So the sound you hear is just from the driver and not from the surface of the cabinet which would muddy the sound," added May.

Mayfly Audio's MF-201 and MF-301 Speaker Systems

The MF-201A system is the first speaker in the world to combine both an internal skyline diffuser and a CNC cut laminated cabinet. Measuring 20.5 (h) x 11.8 (w) x 10.63 (d) inches, each is made of layer-upon-layer of birch ply, thus comprising the cabinet and its internal 24x24 skyline diffuser. The speakers are luxuriously finished in a hand-applied French polish, a technique used on fine musical instruments. The front integrates a bass port; the rear gold-plated binding posts. Designed to sit between 5 and 14 inches off the floor with the driver positioned at the same height as the listener's ear, Mayfly offers optional matching stands at custom heights.

May says he opts for the premium internal components but not audiophile-branded because measured he couldn't decipher a discernable difference. He uses Seas drivers, Solen caps, Air Core inductors, and non-inductive resistors. MF-201A specs are: 30Hz - 20 kHz frequency response / sensitivity 88 dB (W/m) / 8 ohms / crossover: symmetrical 2-pole / 8-inch Seas driver / 1-inch tweeter / 100 watts max each.

The MF-301 system consists of one pair of MF-201A paired with two high-performance 301 bass modules. This brings even more realism, soundstage and bass response. Measuring 38.18 (h) x 17.72 (w) x 15.75 (d) inches, the modules too are luxurious hand-laminated French polish-finished birch cabinets with integrated bass ports. They are designed to have the MF-201A speakers sit atop them for the utmost in imaging and soundstage. Utilized is a best-in-class aluminum cone woofer tuned to extend to 15Hz. Required is a bi-amplifier arrangement with a user-supplied active crossover.

MF-301 is available as a complete system or an upgrade to an existing MF-201A. MF-301 system specs: 15Hz - 20 kHz / 88 dB (W/m) / Top: 8 ohms, Bottom: 4 ohms / active crossover 100 Hz  / Coaxially aligned 7-inch Seas driver, 1-inch tweeter, 10-inch Woofer / Top: 100 watts max ea., Bottom: 400 ea.


Recent MF-201A reviews include 6Moons where Glen Wagenknecht said "The MF-201A was a soundstage and image champion" and Wall of Sound where Noam Bronstein concluded "If I had to summarize Mayfly's best sonic trait in one word, I think it would be explosive."

How to Purchase
Consumers can purchase the products directly from The speakers are sold with a 30-day trial period (full refund less return shipping costs) and are backed by a one-year warranty.

-MF-201A: $3,000 USD per pair + shipping (Note: as of January 1, 2021 price becomes $3,500 USD)
-MF-201A stands $500 per pair + shipping
-MF-301 full system: $12,000 USD (includes MF-201A) + shipping
-MF-301 upgrades: $10,000 USD (for people who have MF-201A) + shipping
Top veneer options for the speaker are walnut, white oak or cherry.

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