4. Re: Replacement for my Remembird

["Raimund" animalsounds]

> The noise was present in 150ohm terminated full gain recordings of preamp=
 noise.  The Oade modded HDP2 used for this recording had +6dB gain above t=
hat of  the stock unit.  There are noise traces visible in sonograms at aro=
und 10 and 14khz which are only just visible in the EIN tests on the stock =
HDP2, hence my suspicion that the Oade mod is uncovering what was previousl=
y hidden in the preamp noise floor.


Hi Paul,

Thanks for the explanation. That would indeed make sense. I initially thoug=
ht that you meant the "strange undulating LF ghost", which Roger Norwood ju=
st menioned and which I also noticed. I guess however that the 10 and 14 kH=
z clock interferences are almost inaudible.

Cheers,
Raimund