Russell Kauffman, the British designer behind Morel's Fat Lady, once explained its cabinet to Jonathan Valin of The Absolute Sound across a restaurant table. Picture two people counting down from five together, he said, then add a third voice that arrives late and muffled. That voice is what the stuffing inside a speaker box stores and later releases through the cone. So the Fat Lady had no internal damping at all, and its curved shell was designed to sing along with the drivers in a controlled way. Morel's other big idea is in the drivers. In its External Voice Coil design the magnet goes inside the voice coil, the coil of wire that moves the cone, so the coil can be unusually large for the cone, an approach Jason Kennedy of Hi-Fi+ calls "almost unheard of" in his experience. Morel says the bigger coil improves heat dissipation, power handling and linearity. Morel suits listeners who want detail and speed with body behind it.

Start with the Avyra 633 floorstander. Trevor Butler of The Ear said it would deserve a five-star review "even at three or four-times the price," and Kennedy found it "seemingly impossible to faze." It is a 4-ohm speaker, so choose an amplifier that is happy with that load. Aaron Jenkins of The Absolute Sound had no trouble with a Rogue tube amp once he switched it to the matching tap. He found the 633 works best in larger rooms and that its spikes noticeably tightened the bass. Morel suggests starting about 20 inches from the front wall and includes a foam plug for the port. The Avyra 622 is the stand-mount option, and Ed Homewood of Old Guy Hifi suggests giving it 18 inches or more behind it and adding a subwoofer for deeper bass. The Sopran series is the step up, and Drew Kalbach of The Absolute Sound said the Sopran 934 "sounded fantastic from the first second" he played it, before any fine placement.

Meir Mordechai founded Morel in Israel in 1975, and the name comes from Mordechai Electro-acoustics. Morel makes its own drivers, once at a plant in Ipswich, and also supplies them to other high-end brands. The Fat Lady, molded from fiberglass, epoxy resin and carbon fiber without a single straight line, reached North America in 2009. Neil Gader recalled that people were soon saying "It ain't over until the Fat Lady sings." The Sopran followed with the same core technology at about a third of the cost, and Gader heard "immediacy, laser focus, and stable dynamic energy" from it. For its 50th anniversary in 2025 Morel launched the Avyra range, named after the Hebrew word for ambiance, and it showed the new Sopran 634 at AXPONA that year. Morel says every product is assembled by hand and passes seven quality tests before it leaves.