The Extreme 35 boasts an efficiency rating of . Let that number sit with you. A standard bookshelf speaker might be 85 dB. The Extreme 35 is so sensitive that a 1-watt amplifier will produce sounds loud enough to cause permanent hearing damage. You can drive these things to concert levels with a flea-powered 300B tube amp putting out 8 watts.
The first thing you notice is the . Normal speakers sound like they are shouting through a cardboard tube. The Extreme 35 has no cabinet coloration because the horn loads the driver so efficiently that the driver barely moves. The sound just floats in space, untethered.
5/5 (Masterpiece) Best for: The collector who has heard everything and felt nothing. Warning: May cause immediate dissatisfaction with every other speaker you own.
But you don't buy a speaker this size to look at it. You buy it to feel it. To understand the Extreme 35, you have to unlearn the last 50 years of speaker design. Normal speakers (pistonic drivers) move back and forth to push air. They struggle with efficiency. They distort. Avantgarde Extreme 35
I am happy to report that after spending 72 hours with the new Avantgarde Extreme 35, my anxiety is gone. It has been replaced by something far more unsettling: the realization that I have never actually heard a recording before.
The third thing is the . Even at 105 dB peaks, the speaker sounds relaxed. It never strains. You know how when you shout, your voice gets harsh? Normal speakers do that. The Extreme 35 whispers at a scream. The Catch (There is always a catch) You cannot just plug these into a $500 receiver and call it a day.
Avantgarde did not cheat.
And isn't that the entire point?
Horns do not struggle.
Here is the truth: The Avantgarde Extreme 35 is not a speaker. It is a time machine. It transports you to the microphone in the studio. It removes the glass between you and the artist. The Extreme 35 boasts an efficiency rating of
This efficiency creates "dynamic contrast" that normal speakers cannot touch. When a snare drum hits on the Extreme 35, it doesn't sound like a recording of a snare. It sounds like a snare drum just manifested in your living room. The air cracks. The attack is instantaneous. The decay is absolute silence. Here is where Avantgarde usually loses me. Horn bass is hard. To get low frequencies out of a horn, the horn has to be the size of a Volkswagen. Usually, companies cheat by adding a conventional woofer.
The Extreme 35 is a magnifying glass for your entire signal chain. It will reveal the noise floor of a bad DAC. It will expose the grain of a cheap transistor amp. It will make a mediocre recording sound like absolute war crime. (I played a 128kbps MP3 out of curiosity. It sounded like wet cardboard being torn in half.)
Does it have flaws? Yes. It is physically imposing. It is ruthlessly revealing of bad gear. It costs more than a Porsche 911. The Extreme 35 is so sensitive that a
Forget everything you know about dynamic drivers, box resonance, and "sweet spots." The Extreme 35 is a 4.5-foot-tall, 400-pound manifesto written in carbon fiber, solid oak, and high-voltage physics. Let’s get the obvious out of the way. The Extreme 35 looks like something a Bond villain would use to summon Cthulhu. Avantgarde has abandoned the "friendly horn" aesthetic of their Duo series. This is raw. The speaker is dominated by a massive, spherical 35-inch midrange horn—a mouth that swallows the room.
Breaking the Sound Barrier: Why the Avantgarde Extreme 35 Isn't Just a Horn—It’s a Religion