QED Signature Revelation Speaker Cable - Pair

Aircore™ Technology

Ten silver plated 99.999% oxygen free copper central conductors of 19/0.1 mm

Features Teflon dielectrics to maintain its low impedance

Like most interconnects here, the Revelation is a silver-plated copper affair, arranged in a special complementary way - the two conductors have different diameters, and this is said to give an alternative path for high-frequency audio signals to avoid time smear. The foamed polyethylene dielectric is claimed to reduce the amount of signal lost to cable capacitance. QED's Analoc plugs are fitted, said to be a low eddy current design with copper instead of brass used. They feature an outer locking cylinder that needs to be screwed forward before the plug's 'blades' can be locked onto the RCA phono socket, then the locking cylinder needs to tightened backup for a (very) secure fit. The Signature Revelation speaker cable uses 10 silver-plated oxygen- free copper central conductors, which are claimed to provide very low resistance alongside high levels of detail. These cores are separately insulated and arranged around a hollow core of polyethylene; QED calls this its Aircore technology and it's claimed to reduce inductance.

Sound Quality

Before the QED loom, the panelists have taken a mixed view of the various wires played to them. They've found positives and negatives, liked some and been lukewarm about others. But two out of the three listeners express a strong preference for this set of cables, applauding it for its clean, open, even sound that doesn't try to do anything too clever. Instead it is very accomplished at almost every facet of the music, and makes things look rather easy.

"Everything is joined up," says one panelist, and so it proves. The Lorde track plays better than it has through most others here. Although not necessarily the warmest or most expansive, it just seems to gel the bass with the rest of the music - which is something several others fail to do.It doesn't sound too steely in the midband, giving a nice smooth sound to female vocals, and treble is crisp and finessed. Musically the loom works very well, the beat bouncing along in an enjoyable way. The result is a surprisingly easy listen, when previously the track hasn't quite made sense.The REM tune is described as sounding, "head and shoulders better" by one panelist. There is a fine sense of depth to what can sound a pretty close and claustrophobic mix. One can hear lots of detail too, with the keyboard backing track coming through from the second verse, where previously it had been submerged. Tonally the QED isn't the warmest or most sumptuous here, but it is very even and transparent and doesn't seem to be trying to add or subtract anything much. This means that it's likely to work well with a wide range of systems. Moving to the Duke Ellington piece and the pattern continues. One adoring panelist describes it as, "good bass rhythm and control, nice, cohesive, great sound, head and shoulders better".Another of the panelists isn't quite so enamored; they appear to yearn for the expansive yet sumptuous midband of the Ecosse, and find the QED a little too anodyne and bland when playing Julian Lloyd Webber's cello work. All of which just goes to show how much taste plays a part, but still this remains a superb result considering its low price.

Aircore Technology™ is completely effective in reducing the self-inductance of the cable to around half that expected of parallel conductors by calculation. Because of this conductor spacing can be increased to reduce capacitance without the extra inductance generated by this change causing audible problems in the cable performance.
Through the use of superior dielectric materials such as polyethylene and for the first time in a QED cable, clear Teflon insulation, the dissipation factor is kept extremely low - something that is the hallmark of a good sounding speaker cable.

Specifications