Jea,
I know this answer is late to your original question but I used to own a Line 1 which I purchased from Kevin at Upscale Audio. At that time I had asked Kevin for some NOS tube recommendations for it. He suggested an Ediswan 6922 from the 1960's and I purchased a pair. I tried tons of different tubes in my Line 1 but kept putting the Ediswan back in. Ediswan are hard to find on the used market but if you every get a chance, try a pair, they were very good IMO.
Good Luck and sorry for hear of the CCa failure, a hazard of the hobby.
Mike.
I know this answer is late to your original question but I used to own a Line 1 which I purchased from Kevin at Upscale Audio. At that time I had asked Kevin for some NOS tube recommendations for it. He suggested an Ediswan 6922 from the 1960's and I purchased a pair. I tried tons of different tubes in my Line 1 but kept putting the Ediswan back in. Ediswan are hard to find on the used market but if you every get a chance, try a pair, they were very good IMO.
Good Luck and sorry for hear of the CCa failure, a hazard of the hobby.
Mike.