I was going to recommend Precision Audio, which had facilities both in Seattle in the Roosevelt neighborhood and in Bellevue or Kirkland. I had had units repaired at both facilities but they've just gone out of business.
Given that the amp in question is European in origin, I recommend taking it to Hawthorne Stereo in the Roosevelt district in Seattle. They have a strong bias and awareness of British audio. I recently took a VSP Labs TransMos 150 amp to them, which has been out of production for 22 years, with a schematic, and they fixed it to perfection in a timely manner and for a reasonable price.
In my 15 years in Seattle, this is probably my best home electronics repair experience yet.
Given that the amp in question is European in origin, I recommend taking it to Hawthorne Stereo in the Roosevelt district in Seattle. They have a strong bias and awareness of British audio. I recently took a VSP Labs TransMos 150 amp to them, which has been out of production for 22 years, with a schematic, and they fixed it to perfection in a timely manner and for a reasonable price.
In my 15 years in Seattle, this is probably my best home electronics repair experience yet.