Specification

Price:
Option 1: $799.99 per premium matched pair with one year warranty.
Option 2: $699.99 per premium matched pair with 30 days warranty.

Comments from end users who tried the pre-production samples: Sophia Electric MK3 845 tubes are at least as good as vintage RCA 845 tubes

Shipping:
Postal international express mail with insurance: $46.40 for the first pair, $12 for each additional pair.
Postal US priority mail/FedEx ground with insurance: $18 for the first pair.
USA domestic express with insurance: $35 for the first pair.