I have owned both the Thor Audio TA-1000 preamplifier and the First Sound Presence deluxe MKll. Which model First Sound preamplifier are you comparing the Thor Audio with?
I hear the Thor TA-1000 with the TPA-30 and have been very impressed by both. I hav't heard the First Sound though so I'm afraid I can't be of much help here.
Kubla, from what I remember from their website, there was something or other about lack of returns or whatever(sorry for not remembering exactly). Coincidence? Maybe not...
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