Simaudio 810lp vs. Brinkmann Edison phono stage

Dear @lewm  : Problem with high output impedance in a preamp is that high frequency range could be affected through the signal " trip " in the IC to de amp not that exist or could exist a problem with the amp.

The worst place to use tubes is at phono stage units.

R.

I think Helmut Brinkmann is not only a great engineer but a musical vinyl fanatic, always always great sounding gear IMO

I'd encourage you to audition a Lamm Industries LP2.1 Deluxe at this price point. Recent thoughts from Positive Feedback's 2019 Writer's Choice Awards.

full disclosure: I'm a Lamm Industries dealer.
https://gestalt.audio

Dear @gestalt : That 810LP outperforms easily the Lamm  or any other tube alternative. Tubes are not for phono stage that you like it does not means is rigth because is a wrong wrong way to go when today exist several SS good designs for that cartridge handled.

R.

Raul, you’re correct but my point was that a preamp with an output impedance of 1000 ohms can drive even as low as a 10K load without problems of the sort you mentioned. And  the great majority of amplifiers especially including solid state ones, have an input impedance well above 10K.