They’re obviously both great and doubt you could possibly be unhappy with either. I’ll just say Herron is no longer in business, which may be a consideration for down the road in terms of repairs. Best of luck.
If you can wait for a new one to be built or can find a used Don Sachs preamp, just go for it — and it does use your desired 6sn7 tubes. I don’t think the LTA will give you what you’re looking for.
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