Graham Slee CuSat50 Interconnect Cable
The Graham Slee CuSat50 Interconnect Cables
These cables are superb, tried and tested by ourselves - in fact we own some of these for our Demo Bitzie DAC.. they seem to add nothing - and take nothing away, which is exactly what we need for our auditioning set-ups. The Lautus cables get superb reviews, whether from forum members or music and HiFi professionals. Just go to www.hifisystemcomponents.com to check out the accolades!
All in all these are superb value for money when you consider the heritage of the company and the cost of other premium brands on the market!
As with all Graham Slee products these are handmade to order by by the nice chaps at Graham SLee and it does usually take a couple of weeks to get these to you. However! It is well worth the wait in our opinion!
Well-Shielded For Musical Clarity
CuSat50 interconnect cables will shield out interference and add nothing of themselves to your music.
So often today you'll find that interconnect cables add "signature" bringing their own sound to your music—these don't! So if you want to listen to your music in a pure and unadulterated way, you should choose the CuSat50:Available in stereo "dual-mono" phono cable pairs from 0.6m to 4.5m in length – a single cable is also offered which is suitable for 75Ω coaxial S/PDIF or video use.
The CuSat50 is not just available as a phono to phono interconnect - with RCA/Phono plugs at both ends, the CuSat50 can be also be configured with different connectors at source and receiving ends;
RCA/Phono >> XLR 3-pin Male: to connect a 'single-ended' output stereo preamp to our Proprius power amplifiers
TRS Jack Plug >> RCA/Phono: to connect a Majestic Pre/DAC balanced output to a 'single-ended' input amplifier
XLR 3-pin Female >> RCA/Phono: to connect a balanced stereo output to one of our 'single-ended' input headphone amplifiers
For the single version you can choose to add our professional BNC adapters at one or both ends as sometimes required for digital audio or video equipment, just let us know if you would like to order this option.
NB(1). The pattern in the braided jacket may vary between batches.
NB(2). Single-ended means single phase, or in Europe: "asymmetrical".
TRS Jack Plug looks like a stereo jack plug and is used for balanced audio on equipment which hasn't the space for an XLR connector.
Holding It Together
The conductive strength of the CuSat50 holds your equipment grounds tightly together and in doing so keeps ground-interference away.
The importance of keeping impedance low between the grounds of interconnected equipment isn't widely understood in hi-fi.
However, it is highly important in keeping hum levels as low as possible, and is widely known by true professionals in sound engineering.
Think for a minute of the opposite: if impedance - which is the term for ac resistance - were allowed between equipment, their grounds (or zero volts) could "float" independantly of each other.
Any mains-borne noise (hum) would create a voltage variation between the equipment grounds. The signal would therefore be modulated - the noise would encroach on your music.
The CuSat50 uses ultra-low impedance shielding - the part of the cable responsible for keeping the grounds tethered - to bring that possibility to an absolute minimum.
It's shielding comprises a tightly knit copper braid over, and in contact with, a copper foil which completely wraps around the inner signal cable.
Copper is the second most conductive metal known behind silver, and its DC resistance is a mere 15 mΩ/m making the CuSat50 a great choice.
Protecting The Signal
The great thing about such a robust and highly conductive shield like the CuSat50's is its thorough protection from interference getting to the signal conductor inside.
The hi-fi fashion over the last decade or so has been to "play around" with interconnects, often not using any shielding at all, but just having two wires - one for signal and one for return - which offers no protection at all.
Another trend has been to tightly twist send and return wires, which may work to some extent in balanced audio, but again offers little protection in single-ended connections.
The third trend we know has been to use twin cored shielded cable but only use the two wires for signal and return, leaving the shield unconnected. A shield without any signal return current running in it offers no protection!
And then there's a variation on the last which connects the shield to ground at one end only, but that's only partially effective up to some cable-length dependant frequency, after which inteference is free to do its worst.
The capacitance of the CuSat50 is only 55pf per metre which means it won't attenuate high frequencies even in longer lengths.
Most preamps, or any other signal processing equipment outputting analogue audio, have output impedance which guards against instability from capacitive loading.
But that output impedance (ac resistance) can form a low-pass filter with the cable capacitance, filtering the highest frequencies.
Tubed equipment has the highest output impedances which limits its ability to drive long cables.
And some products have little or no output impedance which can leave them prone to instability from too high a cable capacitance.
If you're in any doubt at all and want to ensure the correct operation of your equipment you should make the CuSat50 your number one choice.
With sprung split centre-pins and collet twist-locking barrel RCA/phono plugs - with gold plating - the CuSat50 make excellent 360° connections with all RCA/phono jacks.
That's simply not the case with some "fashion" hi-fi RCA/phono plugs, especially those single contact plastic plugs some sellers rave about.
The CuSat50 makes good and reliable 360° contact - plus - they're easier on you and your equipment by you not having to exert extreme force to push them on or pull them off.
The CuSat50 can also be fitted with XLR and TRS connectors (stereo jack plugs used on balanced audio equipment) again using high quality connectors mainly from the world-renowned Neutrik.
|Coax stock cable diameter||6.5mm|
|Single cable sheathed diameter||10mm|
|Stereo cable sheathed cross section||16mm x 10mm|
|Inner conductor||1mm diameter solid soft annealed copper; DC resistance: 0.026 Ohms per metre|
|Shield||Annealed copper braid over 100% copper foil wrap; DC resistance: 0.015 Ohms per metre|
|Dielectric||5 cell semi air-spaced|
|Velocity ratio||0.82 (82%)|
|Capacitance||55pf per metre|
|Characteristic impedance||75 Ohms|
|Shielding efficiency||Better than 65dB|
|Lay-up "dual-mono"||Seperated stereo pair overall flexible PVC braided with welded ends|
|Direction||Marked as "run of the mill"|
|Min safe bend diameter||150mm (6 in)|
|Phono terminations||Locking phono (RCA) plugs with gold plated contacts|
Grado PS1000 Headphones & Graham Slee Solo Ultra Linear Amp Review, KitGuru, by Zardon, March 2011
|Single Wire or Pair||Pair|
|Warranty||2 Years Manufacturers Warranty|