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The photos are only of the version 1.0
Only for the version 1.0
Lundahl is one of the world´s
leading manufacturer of audio transformers used in many professional studio
recording and radio stations so He have a very big experince and all these
products use a custom audio C-core.
I am using a
DACT stepper attenuator
instead of the normal ALPS or NOBLE solution, because the the sound is
clearer. A good review of these components can be found on the
article
published in Hi-Fi World.
For the version 1.0 the input stage tube is the Golden Dragon 6SN7.
About passive components types, I don't leave many choices:
Caddock resistances on cathode, ELNA Cerafine capacitors on cathode.
In all my previous projects I have used in the power supply the ELNA
Cerafine capacitors with a very high sonic performances and compact size.
If we skip any economic aspect and no size problem the first components
is a paper in oil capacitor.
In comparation test the paper in oil are better than ELNA Cerafine
or any electrolityc type.
Searching a paper in oil capacitor is very important buy new product
as the Jensen and not an old stock.
About wire forget the teflon ! use only stranded tinned copper wire with pvc isulator and for loudspeakers the same.
A very good quality stranded tinned copper wire could be buy directly from E-Z-HOOK that carries an extensive line of fine stranded and extra flexible wire.
NOTE: This version could be driven directly by any DAC
top performance !