The best combination of outstanding performance and rarity are so me OTL amps that were built by a Greek builder around 1980. I know one person who has the two-box per channel version (both BIG boxes), but, I don't know what he paid for them. Another person bought the little brother of this amp (just one big box per channel) for $50,000 for the stereo pair. I have heard both amps and they are incredibly dynamic and immediate sounding without being harsh or brittle (tough combination). I heard that this hobbyist/builder only made six such OTL amps.
I have also heard an ultra-rare Western Electric 59B amp equipped with the also ultra rare meshplate 252 output tube. This is also a fantastic sounding amp that gets dynamics so right. The dealer did a "cruel" demonstration for me where he hooked up an Audio Note Kageki amp and the 59B for comparison purposes (I own a Kageki); the Kageki sounded somewhat lifeless by comparison.
On the solid state front, I heard a system that had a Lyra Connoisseur phonostage and linestage. The system was very dynamic and immediate sounding while still sounding very fluid and lacking in artificial edginess.
I have also heard an ultra-rare Western Electric 59B amp equipped with the also ultra rare meshplate 252 output tube. This is also a fantastic sounding amp that gets dynamics so right. The dealer did a "cruel" demonstration for me where he hooked up an Audio Note Kageki amp and the 59B for comparison purposes (I own a Kageki); the Kageki sounded somewhat lifeless by comparison.
On the solid state front, I heard a system that had a Lyra Connoisseur phonostage and linestage. The system was very dynamic and immediate sounding while still sounding very fluid and lacking in artificial edginess.