I can't speak to the PrimaLuna, but I have owned two Cayin amps and currently run a Cayin A-70T in my main system.
I can't say enough good things about the Cayin and the customer service the importer, VAS Industries, provides. I've called VAS on a couple of occasions with questions and they have always been very helpful and friendly.
Neither the A-70T that I currently have nor the A-88T that I owned prior had any trouble at all with my Usher X-718 speakers (87db/8ohm)and both sound absolutely wonderful. They are VERY well built and have proven very reliable.
If you keep a look out here on Audiogon, an A-88, A-70, or A100 comes available every month or so. Be aware that the A-88 is the biggest pain to bias and there are two versions of the A70; one auto-biasing and one manual. The autobias A-70 has a switch on the top plate to select either KT-88/6550 or EL34 power tubes, the manual bias A-70 takes only KT-88/6550 power tubes. Mine is the manual bias version.
I can't say enough good things about the Cayin and the customer service the importer, VAS Industries, provides. I've called VAS on a couple of occasions with questions and they have always been very helpful and friendly.
Neither the A-70T that I currently have nor the A-88T that I owned prior had any trouble at all with my Usher X-718 speakers (87db/8ohm)and both sound absolutely wonderful. They are VERY well built and have proven very reliable.
If you keep a look out here on Audiogon, an A-88, A-70, or A100 comes available every month or so. Be aware that the A-88 is the biggest pain to bias and there are two versions of the A70; one auto-biasing and one manual. The autobias A-70 has a switch on the top plate to select either KT-88/6550 or EL34 power tubes, the manual bias A-70 takes only KT-88/6550 power tubes. Mine is the manual bias version.