Introducing a New Breakthrough in Cable Advanced Technology and Performance
-- Quantum Leap Series of Cables
Quantum Leap Advanced Technology- The Latest Breakthrough
Coincident is thrilled to announce the Quantum Leap Series A breakthrough in cable
technology and performance. The Quantum Leap Series' superiority is not predicated
on a single novel technique or approach but rather that the design for the Quantum
Leap Series is based upon genuinely advanced technology, applied in a "total system"
approach, to each specific cable application, always in accordance with CST's basic
controlling philosophy that the cable should pass the signal exactly as it receives
it, with no addition, subtraction, or perversion.
One example of CST's advanced technology is found in its proprietary "WaveLink"
winding geometry. Although many other cable manufacturers recognize the effects of
ambient electromagnetic fields, and some (but many do not) are cognizant of
electromagnetic fields self-generated by internal current flow, Coincident is still
one of the few cable manufacturers in the world to recognize and design for the fact
that all cables in operation generate both electromagnetic and electrostatic fields
within and surrounding them.
These internally generated fields (the intensity of the electromagnetic field
controlled by current flow, and that of the electrostatic field controlled by
voltage) both individually and by their interaction affect the signal passing
through the cable, and therefore profoundly impact the sound of the entire
Signals passed in each cable application all have different relative amounts of
current flow (amperage) and voltage1, but there is only one optimum relationship for
the two fields that result from them. Therefore, every CST cable, in every series
from Extreme all the way up to the latest Quantum Leap Series, is specifically
designed to produce that one optimum relationship in its own application. Quantum
Leap cables are wound uniquely and look different from each so that all will have
the same optimum field relationship, whatever their application. This is CST's
exclusive Quantum Leap technology, and it's one of many of the reasons CST cables
sound closer to the original signal than its competitors.
The Quantum Leap Series' incredible detail, focus and ambience retrieval lies in
another example of CST's advanced technology: Functionally, cables (of any brand,
even CST) have many of the characteristics of capacitors: They store energy in their
dielectric (on a cable, that means the insulation) and they release it out of phase,
directly into the signal path every time the carried signal changes polarity. This
out-of-phase energy results in cancellation of the signal information at very low
levels (like the fifth bounce of the music off the walls of the concert hall), and
works to reduce detail, blur imaging, and even result in "phantom" signal artifacts
("noise" signals that aren't a part of the recording being played) to further
compromise listening enjoyment. Coincident is one the few cable manufacturers to
recognize and successfully address this important issue.
Cable Design and Construction What is Important? Everything !
The Quantum Leap approach to cable design is exactly what the term implies: Every
aspect of every parameter of each CST design is taken into consideration and
optimized, before the design is finalized and put into production. This painstaking
process takes years and literally thousands of hours of R & D and aural
Many cable manufacturers believe that there can be one "magic" solution that will
always result in "perfect" cables. This simplistic approach will yield a highly
compromised product. While many view cables as bits of wire and plastic, cables are
extremely complex in their operation, and each of its component parts greatly
affects their performance: The geometry and material used for the conductors
(usually either copper or silver in most audio cables) has a clear and obvious
effect on the sound of your system. Equally relevant is the thickness (the AWG
gauge) of the conductors, their purity, how they were made, and whether they are
solid-core or stranded. Dielectric and capacitive discharge effects mean that the
choice of insulating material for the primary wires, it's dielectric constant, its
"dielectric absorption" or "dissipation factor", its "dump rate", and how thickly
it's applied and its air to solid ratio are all crucial in accurately passing the
signal the cable is fed. Furthermore, the type and thickness of each of the overall
conductor jackets, the filler materials, if any, and the final overjacket on the
finished cable all combine to greatly impact on the veracity of the resultant
signal. Whether or not the cable is shielded is highly significant as well, because
shielding - even shielding done the way CST does it can affect sound quality and
overall system performance. And so can the spacing of the shield, if any, over the
cable and the spacing of the conductors within it: The distance between them
determines the capacitance and inductance of any pair of conductors, and those
factors, plus the resistance of the conductors themselves, are the sole determinants
of the cable's characteristic impedance. The ultimate importance of absolutely
everything in cable design is perhaps best illustrated by the circularity of its
center core. If it is not perfectly round it will significantly affect how closely a
coaxial cable will conform to its designed impedance specifications.
In designing its cables, Coincident takes every factor into consideration. Compromise
or neglect any design or construction parameter and the cable will be severely
degraded. It is for these reasons that the Quantum Leap Series is uniquely superior
to virtually all other cables at any price, let alone at its unheard of selling
price. Unlike other products that involve compromises that must be made to comply
with budgetary considerations, the vagaries of the market, or the realities of
manufacturing, the Quantum Leap Series is designed and manufactured with none of the
The Quantum Leap Series is different. Absolutely uncompromised in any way, and
representing the fullest development of the thoughts and skills of designer Israel
Blume, the Quantum Leap is, even as compared to the Statement Series a huge step
forward. The goal of Quantum Leap Series is to produce a line of cables that pass
the musical signal with as little coloration as possible and to replicate the
accuracy of a direct bypass- in other words, to sound like no cable at all.
The Quantum Leap Series Product Line
The Quantum Leap Series consists of : QL1-The Single-Ended Interconnect; QL -PH2
Phono Cable-RCA or DIN; QL-2- The Balanced Interconnect; QL-4- The Digital
Interconnect, (available either balanced or single-ended); QL -4U USB ; QL-5 The
Speaker Cable, QL- 5 /JS.2(Jumpers) QL -10 - Power Cord.
Materials and Construction
Quantum Leap Series Interconnects
All the interconnects and digital cables are made from custom-drawn and specially
treated PC-OCC (Pure Copper, Ohno Continuous Cast copper, which is so pure that it
actually exceeds the test capabilities of any commercial laboratory. The conductors
of this extremely expensive material are individually insulated with thin films of a
special PTFE-related fluoropolymer material and then arrayed in CST's own
proprietary "WaveLink" geometry between an air- and nitrogen-bearing concentric two
element fluoropolymer central core and a single element air-bearing fluoropolymer
outer core. The insulation and core structure thus formed has a lower effective
dielectric constant than any other kind or combination of commercially available
materials. Where necessary for balanced or AES/EBU operation, a special grounding
network is incorporated within the central core.
All connectors used on the Quantum Leap Series interconnects and digital cables are
made to CST's own high standards. Every connector is non-magnetic, to avoid
hysteresis effects, and each is designed for minimum self-inductance. Every part in
the signal path of every Quantum Leap Series connector is precision manufactured
from either ultra-pure copper or from an ASTM-designated copper alloy selected to be
best for its particular application. Where gold plating is used, it is applied
directly, with no nickel substrate, just thickly enough to prevent connector
tarnishing, without affecting sound quality. To ensure minimum self-inductance,
steps are taken on every Quantum Leap Series connector to remove all conductive
materials not absolutely necessary to signal transmission from the signal path.
Quantum Leap Speaker Cables
Are made from the same specially treated ultra-pure (exceeding U.S. commercial lab
test capabilities) "PC-OCC" copper as is used for Quantum Leap Series interconnects
and digital cables. Multiple small-diameter conductors (23 AWG) of this material are
individually insulated with thin films (0.076 mm or less) of a special PTFE-variant
fluoropolymer material and implemented in accordance with Coincident"s special
"WaveLink" geometry, over air-bearing composite multi-element concentric
PTFE-variant core structures to make the cable's four individual conductor "legs".
Each of these four legs is then wrapped and extruded with a twin-element
PTFE-variant fluoropolymer jacket and the four legs are cabled, either around an
air-bearing central core member or a special into a minimum-inductance "quad", and
finally given a braided protective mesh outer jacket.
Quantum Leap Series speaker cables are eight conductors of 16 gauge (AWG) in their
normal "shotgun" configuration (2 legs per conductor) or four conductors of 12 AWG
when terminated in the optional "bi-wire" mode. Protruding through these caps at
either end are the actual hook-up ends of the cable. These are sheathed in
multi-element air-dielectric tubes. The actual termination is, in every case, an
individually billet-machined cryogenically-treated 24K direct gold-plated copper
spade lug (of either 6.0 or 8.5 mm terminal size). Premium Deltron brand bananas
are also available.
Specific Product Descriptions
QL-1 Single-Ended Interconnect - Much larger in diameter than than the
previous, Statement Series cable features unique jacketing braided from dense
wear-resistant polyester. This results in truly remarkable dielectric
characteristics and an understated, elegant "stealth-like" appearance and texture
reminiscent of carbon fiber. Fully symmetrical windings and special geometry make
this shielded single-ended cable unusually resistant to EMI and RFI.Unlike the
previous Statement MKII, the outside jacket has been eliminated which results in
greater cable flexibility coupled with purer sonics due to reduction of dielectric
Price: $595 US/ 1M pr.
$175 US each additional .5 meter pr.
QL-2 Balanced Interconnect - Similar in construction and jacketing to
the Single-Ended Interconnect, this 3-conductor, "true balanced" shielded cable
relies upon the Common Mode Rejection inherent to balanced ("differential mode")
operation to provide outstanding sonics. Special proprietary Quantum Leap Series XLR
connectors are custom machined and precision die-cast, with pins (male) and pin
receptacles (female) of billet-cut Tellurium copper or patented Brush-Wellman Alloy
174 beryllium copper as standard.
Price: $695 US/ 1M pr.
$195 US Each additional .5 meter pr.
QL-4 Digital Interconnect - Designed for instantaneous rise-time, broad
bandwidth, and the lowest available cable-induced jitter of any product currently
available, this Quantum Leap Series cable has been adopted as an absolute reference
standard by manufacturers of some of the most technically advanced digital equipment
in the world and is the cable of choice for many of the world's most critical and
demanding audio reviewers. QL-4 cables are available either unbalanced, with RCA or
BNC connectors, or in balanced configuration with XLR connectors, for AES/EBU
Price: $495 US/ 1M
QL-4U USB 2.0 Data Link Cable - The Quantum Leap Series QL-4U USB 2.0
data link cable is designed for audiophiles and music enthusiasts with vast music
collections on their computer hard drives
looking for accurate, loss-less, high performance sound.
The QL -4U is an optimized digital interface between computer hard drives and
Computer-based systems are capable of smooth and detailed sound, especially with
high-resolution recordings. But as with any system component quality, well-designed
low-jitter USB cables are vital.
The QL -4U cable is constructed from silver copper alloy conductors with ultra
low-loss, high-density PE (polyethylene) dielectric insulation.
It also features quad shielding and non-magnetic 24K Mil-Spec gold-plated USB 2.0
connectors with an internal EMI shield incorporated directly into the connector.
Optimized for clear and open highs, elegant midrange textures, powerful, tight bass
and incredible soundstage & imaging, plus improved frequency extension and tonal
26 AWG Ohno Continuous Cast Ag/Cu alloy conductors
24 AWG Ag plated OCC Conductors
Premium high-density polyethylene
Quad shield (3-layer) construction for maximum EMI and RFI noise rejection
Non-magnetic, shielded 24K gold-plated USB 2.0 Type A and Type B connectors
Price: $595 US/ 1.5M
QL-5 Speaker Cable-
The Quantum Leap ST-5 is an highly flexible and compact profile speaker cable that no
longer utilizes any of the excessive layers of bulky PVC insulation that held the
earlier cables together.
The machine braided design provides a unique balance between electrostatic and
electromagnetic fields where the positive and negative conductors criss-cross each
other. Cross-Linked Teflon/ air dielectric insulation( the most expensive and finest
dielectric next to air) is used for its superior properties in capacitive discharges
(extremely low capacitance and inductance).
PC-OCC copper metallurgy is even of higher purity than laboratory grade and
proprietary winding geometry lowers inductance so that the response is totally
linear to beyond 50khz. 6 AWG multicore construction ready for either shotgun or
internal Bi -wire application. Billet - cut direct gold plated cryogenically-
treated copper fittings, combine to create a speaker cable that passes virtually all
the musical information without subtraction, perversion or omission.
All new banana and spade terminators utilize the same PC-OCC copper with the
protective barrel fashioned from high grade pure aluminum that is non resonant and
non magnetic which eliminates hysteresis interaction.
The sonic result is greater overall purity, transparency and significantly greater
revelation of low level detail and harmonic completeness. The Sound stage is more
expansive with greater specificity of instruments.
$2195 US - 6 ft/Pr.
$295 US - each additional 1ft/pr
QL- 5/JS ( Jumpers)- Offer an alternative to using biwire cables. The
jumpers are made from the same conductors and dielectrics as the QL-5 speaker cables
and exactly replicate their performance.
Price : $795 US /8 set of 4
QL-10 AC Power Cable -
The QL -10 represents an evolutionary approach to power transmission technology. The
new PC-OCC copper metallurgy ( even purer than before) and proprietary winding
technology 10+ equivalent gauge (AWG), multi-conductor, PEX dielectric ( less mass
than before) will outperform any other AC power cable regardless of price. The all
new full coverage double densely braided shield, and unique geometry, results in AC
noise levels, EMI and RFI being dramatically reduced. The sonic result is lower
noise floor, greater revelation of low level detail and more impactful and
authoritative bass. While the sonic improvement will be clearly evident on all
components from line stages, DACs, digital players, and turntables, the absence of
any current limiting makes this cable especially well suited to high power
amplifiers. Each power cable is fitted with premium Hospital-Grade U.S.-style NEMA
3-prong plugs and 15A IEC connectors. European-style Schuko or 20 Amp connectors are
also available at nominal additional cost.
$625 US /6 ft.
$725 US/6ft ( Schuko)
$75 US each additional ft.
Two twisted pairs (4 conductors) of individually insulated 22 AWG PC-OCC Ohno
Copper conductors (2 x S twist; 2 x Z twist)
PE-variant dielectric insulation
Full double-shield design with full coverage aluminum foil shield and copper braid
shield for maximum rejection against EMI and RFI noise
Translucent, high stability medical-grade PVC outer jacket
Abrasion resistant protective polyester outer braid
Precision machined, low self inductance RCA and DIN plugs made from electrolytic
brass and anodized aluminum ground shells with PTFE dielectric insulation
Price: RCA-RCA - $695 US - 1M Pr.
DIN (Straight or L- Shape) - RCA - $795 US - 1M Pr.
1 The signal passed by phono cables is tiny fractions (thousandths or fractional
thousandths) of an Ampere of current at equally tiny fractions of a Volt. The signal
carried by an unbalanced interconnect in a high impedance circuit is just millionths
of an Amp at as much as 10 Volts; that of a balanced interconnect or digital cable
in a matched-impedance circuit is milliamps (thousandths of an Amp) at, again, as
much as 10 Volts; and that of a speaker cable may be as much as 50 or 60 Amps of
current at as little (typically) as just a few thousandths of a Volt.