Upgrades include: 1) Experience drivers, with more powerful motors/lighter cones/nanotech materials, for improved dynamics as compared to stock Essence drivers, 2) Mundorf silver/oil capacitors for improved transparency, smoother upper mids/treble and just a touch of added warmth, 3) damping compound on cabinet interiors to improve transparency, and 4) custom high gloss paint (the upgraded finish alone is a $1200 premium).
These are not after market upgrades, but original Zu custom builds recommended by Sean at Zu Audio. I’m the original owner and picked them up from the Zu factory in early 2010.
Rated 8 because they are over 1 year old (although they weren’t used for nearly a year), and for a small spot on the rear corner of one speaker where the gloss paint is missing (see photo – spot is approx. 0.10 x 0.05 inch). The missing paint is not the result of impact, and the exposed dark grey primer shows no sign of damage. I’m not sure how or when the paint was removed, but suspect that I may have nicked the finish with a ring while positioning the speaker. This small spot hasn't been an issue for me since it’s only visible from the rear. However, I'd be happy to get some touch up paint from Zu and provide that at no additional cost, at buyer’s request. Other than this one small flaw, the finish and all else is in great shape. One speaker is shown w/o grill, but both grills are included.
Buyer pays for shipping, with insurance for purchase price. I’ll cover the cost of PayPal.