Opus 3m speaker cable

OPUS is a British made high quality, easy to use, and very competitively priced stereo interconnect to connect between audio equipment. It is equally suited to first time buyers of music systems and to people who wish to upgrade the sound of their existing interconnect cables.

The design of OPUS is based very closely on the very popular award winning HARMONY interconnect cable, with some slight changes to make it even better value for money

Low Transient Phase Distortion through Innovative Design.

OPUS gives a very clear diction of a singer’s voice and separates musical instruments superbly through a dramatic reduction of ‘Transient Phase Distortion’.  

‘Transient Phase Distortion’ is reduced by using thicker insulation (0.6mm wall thickness) than is usual in interconnect cables, increasing the distance between conductors. The reason behind this change to thicker insulation of the conductors is that when two electrical conductors carry an electrical current, the magnetic field produced by the current in one conductor affects the resistance of the other conductor. This is known as the ‘Proximity Effect’. By siting the conductors of OPUS 1.2mm from each other, the magnetic field (which reduces inversely proportionally to the distance) on the other cable is lowered and the ‘Transient Phase Distortion’ is less audible.

This effect can easily be observed when listening to complex musical signals such as massed choirs and large orchestras.

Silicone Rubber insulation for Sharper Leading Edges and Natural Decays

Silicone rubber insulation is used because its low dielectric loss ensures extremely low distortion due to dielectric absorption effects in which sound energy is absorbed in the insulation and released at a later interval of time to create highly audible time-smearing distortion. By using silicone rubber insulation, OPUS guarantees you sharper leading edges to your music and lingering, more natural decays.

Silicone Rubber jacket for lower mechanical vibration induced distortion

The outer jacket of OPUS is made from the same silicone rubber insulation as is used to insulate the individual cores. The tight mechanical coupling between the outer jacket and inner cores reduces the distortion caused by mechanical vibration within the cable thanks to the damping effects of the soft silicone rubber in absorbing his energy. The result is clearer sound quality and a reduction in harshness in the music.

Advanced Manufacturing Techniques to Reduce Noise and Distortion.

OPUS uses two tin plated copper cores for positive and negative signal flows.  These are connected in opposite directions.  Our listening tests have shown when connected this way the noise floor between the musical notes lowers. This gives ‘blacker’ silences in the interval between musical notes and separates individual instruments and voices to give you a much more lifelike presentation of the music..

Simple effective techniques to reduce distortion from RFI

The cores inside OPUS are twisted together to reduce their susceptibility to picking up high frequency noise signals that distort your music and reduce your listening pleasure.

The two OPUS cables in a stereo pair are twisted together. Thus prevents the cable acting as a “loop aerial” for airborne radio frequency interference which can cause audible distortion to the sound quality.

Gold plated Banana plugs for long life and ease of use.

Gold plated connectors ensure a long reliable use due to the lack of tarnishing.  Our banana plugs used on Opus are soldered to ensure long term reliability of contact.

Specifications

Conductors: 16 x 0.2mm diameter (20 gauge) tin plated copper

Insulation: Silicone rubber type GPC

Inner insulation thickness 0.6mm

Outer sheath: Silicone rubber

Outer diameter: 6.25mm

Capacitance: 70pF 1m terminated