I looked at a couple of used VK-200 amps after auditioning one with the Audio Physic Tempo IIIi speakers I just bought. It sounded really wonderful being driven by their VK-3i preamp. I currently listen to a 100 wpc MOSFET amp and like the MOSFET sound. But, I digress.
In checking with the folks at BAT, I found that the earlier VK-200's need an upgrade to their bias circuit or will sometimes shutdown during a heavy load. I know that S/N 274 needed it and S/N 371 came from the factory with it. And the upgrade is $500. So I will continue to shop for a VK-200, but only one that has a later S/N.
But I am surprised to hear the it will not drive a pair of Dynaudio 1.8 speakers. These are a quite moderate sized speaker. I can attest to the fact that the VK-200/VK-3i combo did a spectacular job on the Audio Physic Tempo IIIi at Sound by Singer. I spent several joyful hours listening before I decided to buy the Tempo IIIi speakers.
In checking with the folks at BAT, I found that the earlier VK-200's need an upgrade to their bias circuit or will sometimes shutdown during a heavy load. I know that S/N 274 needed it and S/N 371 came from the factory with it. And the upgrade is $500. So I will continue to shop for a VK-200, but only one that has a later S/N.
But I am surprised to hear the it will not drive a pair of Dynaudio 1.8 speakers. These are a quite moderate sized speaker. I can attest to the fact that the VK-200/VK-3i combo did a spectacular job on the Audio Physic Tempo IIIi at Sound by Singer. I spent several joyful hours listening before I decided to buy the Tempo IIIi speakers.