Anyone listen to Zu Audio's Definition Mk3?

I have the Def2 with the new flagship drives installed. Bought them from a member that heard the Def4 @RMAF and had to have them.

What I have kicks butt and am told the 4 will wipe the floor with the 2. The 3 is a Def2 sent ba k to Zu for the suPer upgrades. The 4 is their new model with down firing bass drivers.

I believe they will sell you the new drivers to install in your 1.5. Will make you happy for the next 5 years.

my mistake. I meant the Def4s. The new drivers you're talking about in my 1.5s? Happy for the next 5 years? NEVER going to happen. Knowing the Zu boys, the Mk4s (love a down firing woofer) will be amazing. I've been itching to find someone who has them, or someone who has had a critical listening time with them.

Hi Warren. They just debuted a few weeks ago at RMAF. The first shipments are probably just being received and I doubt anyone outside of Zu has spent more than a few hours listening. I too would love to hear the comparison. Maybe Glory can expound on the improvements that he has noted with the updated Drivers on the Def 2's?

I received my MK4s 10 days ago. I started with the 1.5, graduated to the 2.0, and now the 4.0. As much as I liked the Def2s, the 4s are a totally different speaker. The only similarities are in size (virtually identical to the 2.0) and looks.

The engineering is amazing. (1) The integrated amplifier can be unscrewed and popped out for service if necessary. (2) Similarly for the bass driver. (3) The aluminum base that supports the downward-firing bass driver is a work of art. (4) The Neutrik Speakon connector preserves the geometry of the cabling and accommodates a selection of connectors for each different type of speaker termination. (5) Bass can be tuned to the individual room. Etc. Everything has been thoroughly thought out.

The highs and lows are more extended. Deep organ notes are palpable (when appropriate). Resolution is better, but the sound is also smoother, more organic, and even a little more dynamic. The soundstage is deep and wide even though they are within 4" of the back wall. Off-axis imaging is amazing; maybe it is the way that Sean set them up on my 24' long wall, but the image does not change whether I am between the speakers, sitting in front of one of them, or standing against one of the side walls. And yet, everything that I liked about the Mk2s is still there. The sound easily fills my living room and the main living space of my house without a change in tone or quality when I am in a different room. I have listened for hours without any fatigue. Truly amazing.