I bought the KLH Model 5’s. I’m sending them back as they didn’t meet my expectations. I recognized the positives of the speaker (reviewers have talked about the positives); however, the negatives were far worse than I can handle.
The negative, for me, was all about the lower midrange. There were hollowed out and very thin sounding. Perhaps I like a warm romantic sound. They did have a lot of detail retrieval which is nice; but, not at the expense of a neutral to warm sound.
That said, some may find them extremely enjoyable…