We've seen Tango in its conventional non-bi-wire form – just two conductors – but this version adds a further pair of conductors to the construction.
As usual in bi-wire cables, the conductors are commoned into a single pair of plugs at the amp end, but terminate separately at the speaker. Off-the-reel costs are £30/pm.
Each conductor uses stranded copper of medium overall gauge, insulated in Black Rhodium's favourite material (silicone rubber), with an overall sheath of some 9mm diameter in soft plastic. It is a practical cable that is easy enough to route.
Although in this case the price differential against single-wiring is quite high, the benefits are very obvious.
We felt the bass of single-wired Tango was a little on the rich side and, at times, a touch loose with the bi-wire version.
Clear and detailed sound
However, control of the lower octaves is definitely a strong point.
There may still be a very small subjective boost to frequencies in the upper bass/low midrange region, something we've detected as quite a common feature of silicone-insulated speaker cables, but it doesn't seem to have any knock-on effect in terms of precision that we could detect.
Treble is clear and well extended: perhaps not quite as airy and open as some cables we've heard, but again certainly precise and with good tonality. Stereo imaging is pin-sharp laterally and just a shade compressed in the depth dimension.
Overall, the sound strikes a nice balance between musical enjoyment and analytical precision.