darTZeel Audio NHB-108 - Manual (Page 8)

darTZeel NHB-108 model one Audiophile's technical manual Page 8 of 28
frequencies, most important in terms of
sound reproduction accuracy.
And while on this subject, have you ever
heard an amplifier singing? This can oc-
cur when the transistors of the final
stages and/or the power transformers
are not properly decoupled.
They start to vibrate at the excitation
signal frequency – in this case the music
– this vibration interfering with the
electrical origin of the signal. You can
hear it if the amp is hooked to a dummy
load, since in normal use, loudspeakers
fortunately mask this disconcerting
internal “singing”.
No such mechanical singing on the
darTZeel NHB-108 model one! The electric
signal is transmitted stage to stage, from
input to output, free from any mechani-
cal disturbance, internal or external.
The darTZeel NHB-108 model one stands on
3 pads incorporating rubber inserts.
Oddly enough, very few manufacturers
rely on 3 legs instead of four. We can
recall that the Lunar Explorer Module
(LEM) also had three legs, but that is
another story after all.
Weighing around 30kg, the darTZeel (not
the LEM) needs to have a good stable
base. Those three pads are evenly lo-
cated around the horizontal center of
gravity of the amplifier, ensuring excel-
lent stability on virtually any surface.
The absorbing rubber pads dampen the
lower frequencies, thus forming the ideal
complement to the suspensions de-
scribed earlier. In the case where you
would want to use 2, 3, or even 4
stacked darTZeel NHB-108 model one units,
we have designed special pads of differ-
ent diameter to maintain the very same
vibrational absorption behavior. These
pads are easy to install and can be pur-
chased separately.
4.4. Everything is transparent
The darTZeel NHB-108 model one cover is
made of 8mm thick tempered, bronze-
smoked glass. It harmonizes magnifi-
cently with the colors of the housing, and
gives an inimitable touch.
The glass is held by a single, central
screw, and rests on a foam rubber seal,
giving to the darTZeel NHB-108 model one
its dust proof quality. Your machine will
therefore remain as new for years to
come.
The reason why we did not choose a
metal cover is not so obvious as it might
appear. It is true that to look through
the glass of the darTZeel NHB-108 model
one is a pleasure for the eyes. Look at
those Moon-crescent shaped bar busses,
and tell us frankly what you feel…
There are also a couple of technical ad-
vantages that glass has over metal.
Its crystalline, inert structure, combined
with the rubber foam seal, functions as
an internal noise killer.
And contrary to metal, glass is totally
transparent to magnetic fields, thus
avoiding the inherent magnetic loop that
metal would induce over the power sup-
ply transformers. Last but not least, the
internal housing is much less polluted by
magnetic ghosts.
4.5. TIO, Totally Identified Object
It is however the final touch that makes
this darTZeel NHB-108 model one, now in-
stalled in your listening room, your
darTZeel NHB-108 model one:
We refer to the identification plate, fully
described in the Owner's manual.
Made from 24k gold plated brass, it is a
unique handmade piece, just like the
machine on to which it is affixed.
Your name is engraved in gold letters,
thus amalgamating the destiny of the
darTZeel NHB-108 model one with your fu-
ture unforgettable musical moments.
We proudly congratulate you!