??:
http://www.hypex.nl/docs/UcD400HG manual.pdf
Says 100k, so there should be no problem having 1k on the output of your preamp. That is wel over the rule of thumb ratio of 1:10. So you shouldn't even lose 1dB.
That rule is good enough for lab measurements only. For acceptable sound 1:100 is a bare minimum 😉
- Status
- Not open for further replies.