This is the one I’m interested in; it uses 6J1 tubes. The ad only mentions “passive amplification” in the expanded Product Details — NOT the product description:
I suspect that it’s not passive at all, and the writer at Douk Audio got things mixed up.
it does seem awfully cheap for a MC preamp, but they explicitly say “for MC only”, so it appears to be a good bargain.
Look at this on eBay
HiFi Tube Phono Stage MC Turntable Preamplifier Mini Class A Single-ended Preamp
I suspect that it’s not passive at all, and the writer at Douk Audio got things mixed up.
it does seem awfully cheap for a MC preamp, but they explicitly say “for MC only”, so it appears to be a good bargain.