(I don't think I've ever come across a transformer of this type without a bit of impact on the bass side, but Lundall is a very serious manufacturer and such measurements are probably due to a procedural issue.
phono tests require a lot of precautions regarding impedance level, egc...we recently...
Post in thread 'Introducing PocketADC, a tiny Audiophile Analog to Digital converter.' https://www.minidsp.com/community/threads/introducing-pocketadc-a-tiny-audiophile-analog-to-digital-converter.23540/post-73679
input impedance and level normalized here asym sym... for adept and minidsp.. (and phono for adept)
easy for many use ;-)
(If here in balanced or unbalanced and not 48v microphone... seems in "the same vein" for adept as the RME at first glance... )
https://www.minidsp.com/products/usb-audio-interface/pocketadc?srsltid=AfmBOop7dZYe6sC4n4yQfES0eB6MWcFKDlabp9Uu36Yo74j7YpO8laBP
These first measures are already significant...in line asym 2v...
waiting for more on the mini (even if in fact the essential is there) but especially the adept...
Funny...
I recently played around two very similar speakers (variations of the same model, comparable FR curve, etc., different cabinet material...devellopement) in mono L vs R, with the same physical posotion exchange etc...
one of them could subjectively be preferred...:
"more lack back", a...
a little more reasonable...80 euros delivered to France from france a few weeks ago....( 75euro ttc+port)
It's surprising that it haven't been more highlighted, nor already tested here...
if the adept represents a lot of efforts... here it's very simple and quick to test....
but the adept's...
maybe just that the people who may have been concerned are already equipped...like earthworks etc....
(and for most people...the classic Dayton models are enough...)
Some magazines systematically presented square signals but typically at 40hz for amplifiers...
(see formerly in the case of phono cartdrige... 10khz)
;-)