Helios
phono cable
The Helios story is quite simple: it's designed and made the
same as the Sakra V12 - same geometry and key featues, including
Helium gas dielectric, but in a phono cable form.
The proprietary
STEALTH custom miniDin, on a highly flexible cable end, is
designed to fit any tonearm or turntable counterpart, with any
Key position or orientation. This cable end can be bent at a
very sharp 90-degree angle without any risk of damage - because
it's designed specifically for that purpose.
KEY DESIGN FEATURES
-
Amorphous
conductive media (wire)
- which is perfectly homogeneous, grain-less – i.e.
identical in all directions, since it has no crystal structure
at all;
-
Ultra
thin wire:
Very thin wire is important
for:
ˇ
minimizing
skin effect (no harshness in the upper midrange and treble);
ˇ
minimizing
time-domain errors (necessary for the clean, well defined
bass, and perfect imaging);
ˇ
in
realistic cable dimensions, allows the use of the STEALTH
proprietary distributed LITZ geometry**:
-
Proprietary
non-resonant cable geometry:
STEALTH
vari-cross
distributed LITZ**:
ˇ
Individually
insulated strands
(to eliminate direct electrical contact, i.e. galvanic
interaction between strands – otherwise the multiple bare
strands behave like a single thicker wire)
ˇ
Non-inductive
bifilar winding - the
advantage of the STEALTH multicore
geometry.
ˇ
Electrical
resonance control: the
advantage of the STEALTH distributed LITZ geometry.
ˇ
Mechanical
resonance control:
dielectric and jacketing mechanical properties: optimized
density and damping. Too much damping usually sterilizes and
deadens the sound, while too little damping is even worse
because of excessive “ringing” (unwanted uncontrolled
resonances).
-
Characteristic
impedance control:
optimized relationships among capacitance, inductance and
DC resistance: the
Helios
characteristic
impedance and its resonant behavior (“Q” at RF
frequencies) are different from any machine-made cable.
-
Ultra
low energy storage dielectric: STEALTH
para-vacuum***
(Helium
gas) + porous - i.e. foam-like Teflon. The
Helium dielectric, combined with the multicore geometry, are
the
MAIN
technical advantages of the Śakra,
compare to the Indra.
Porous Teflon has
the lowest dielectric constant of all solid and semi-solid
materials. Low dielectric constant = low energy storage = low
distortion = fast sound. Helium
gas dielectric properties is much better than even porous
Teflon, better than air, and better than realistic (commercial)
vacuum.
-
Proprietary
STEALTH connectors:
custom and highly advanced; very low overall mass, solid
silver contacts, machined ultra-modified PTFE (TeflonŽ)
dielectric, Kevlar composite frame, Carbon Fiber/Titanium
shells.
-
Advanced
termination technique
(high pressure crimping = cold weld) – a direct contact =
seamless transition between the wire and the contact – no
intermediate agent (solder) involved;
**
STEALTH Distributed LITZ geometry: while similar to the bifilar winding, it’s not exactly that: the cable is multi-layered; wires are individually insulated and gently spiraled to run in opposite directions in layers which are next to each other; the spiral diameter and the pitch is different for each layer, i.e. for each individual wire. Thus, the wires inside a cable are separated by the far greater distance compare to their diameter, no wires run in parallel to each other, and no regular pattern is repeated throughout the cable. The distributed LITZ geometry offers significant reduction of electromagnetic interaction between strands of wire; both capacitive and inductive coupling are greatly reduced. The electrical resonances in distributed LITZ are considerably less pronounced than in any conventional geometry. This dramatically reduces RF resonance-related intermodulation
distortion (one of the main distortion types in cables). The Sakra’s multicore Distributed LITZ offers yet improved performance versus the Indra’s single-core Distributed LITZ.
***
STEALTH para-vacuum tube is a hermetically sealed flexible tube filled with Helium. This gas is approximately 15 times lighter than air, and therefore its energy storage properties are extremely good: about equal to that of a 15-fold vacuum. The dielectric properties of Helium are actually better than any realistic vacuum: Helium is inert and has no ozone or other ionized molecules, and therefore there is absolutely no electrical leakage of any kind inside these Helium filled tubes. Being surrounded by the inert Helium, the wires will never oxidize or deteriorate. Any “vacuum” cable would inevitably lose vacuum with time and thus would need periodical servicing to maintain its performance. This is NOT the case with the Sakra: the Helium pressure inside the tubes is exactly the same as the atmospheric air pressure, and thus there is nothing to force our Helium to leak out of the tubes it’s in. The tubes filled with Helium do not have to be rigid, they are flexible, which makes the Sakra cables robust, user-friendly, easy to install and live with.
this page
is being updated!!!!! Come back soon!!!
PRICING
The suggested retail price is for a 1.2 meters or shorter Helios
cable is $9,800, $11,200 for a 1.5 meters cable, and $12,000
for a 2 meters cable.
Due to the high customization
required for each individual quality phono setup, the Helios cables are
made to order (2 to 3 weeks average lead time).
|
