You could hear the echo of the Ryman Auditorium’s wooden pews. You could hear the sweat on his fretboard. The K6 has a "family sound" of alacrity and rhythmic snap, but the K6 adds a layer of density to the midrange that the smaller ProAcs (like the D2R) lack. It is brutally fast, but never thin.
The Setup It was a damp Tuesday in Cheshire. The usual suspects were in the listening room: a Naim ND555 streamer, two gargantuan Statement amplifiers, and cables that cost more than a used car. The speakers they were replacing were no slouches—venerable Wilson Watt/Puppies. But curiosity about ProAc’s flagship K6 had been gnawing at me for months. proac k6 review
I switched to Jolene (the 2013 White Stripes live version). Jack White’s voice is a raw, chaotic thing. Through lesser speakers, it's harsh. Through the K6, it became a physical object. The ribbon tweeter is the star here. It doesn't just extend the highs; it sculpts the air around the voice. You could hear the echo of the Ryman
My first reaction was confusion. Where was the bass? The Wilsons had punched me in the chest. The K6, initially, felt polite. I almost dismissed them. But then, 90 seconds into the track, the descending synth bass note hit. It didn’t punch—it materialized . It is brutally fast, but never thin
The ProAc K6 is not a "fun" speaker. It is a forensic scientist disguised as a floorstander. It will reveal that your DAC is too bright, your amplifier is sluggish, and your MP3s are garbage. But if you feed it a high-resolution recording of a piano through a clean Class A/B amp, it will produce a sound so tactile, so devoid of cabinet coloration, that you will forget you are listening to electronics.