AR Sound | Green 1 page

Background

For a several years I searched for a suitable Hi-End interconnect cable which allow the delivery of the delicate signal from the source to the preamplifier, without altering the sound by adding or subtracting any part of the frequency range– something that most interconnects fail to do.

Following a research that included materials testing and an extensive listening tests to different configurations, I finally chose a group of cables specification that are normally used in the aerospace industries. These particularly cables sounded best and and also have a superb durability that enable to maintain their sonic aspects for many years.

The first AR Sound interconnect product was the GREEN 1 source lead. The GREEN 1 interconnect offer a grate sonic qualities at an affordable price without sacrificing the quality of the materials used in this interconnect. The GREEN 1 is the basic source interconnect AR Sound is offering.

Technology

The cable used to compose this special interconnect has been carefully selected from many top quality cables being used in the aerospace industries in order to achieve the highest possible standards.

The AR Sound GREEN 1 use a low capacitance wire (115pF/meter). Low capacitance is an important factor in selecting a proper interconnect.

The GREEN 1 cable contains two 22 AWG copper alloy twisted pair wires with Teflon™ (PTFE) insulation and fully screened. (One Green cable for each channel. close up picture showing one of the two wires used for a single channel:)

The main pair of conductors in each GREEN 1 cable twisted to further enhance

RF rejection of the cable. first barrier avoiding RF noise from penetrating into the

cable is the Silver plated OFC copper screen and the secondary treatment is the

twisting of the internal pair.

The main pair of twisted conductors in each GREEN 1 cable is made of a special, aerospace grade copper alloy carefully selected after extensive listening tests for its superb sonic qualities and durability. the copper alloy wire comprises a silver content which allows for better bonding to the silver solder used to make this superb interconnect.

The interconnect insulation is made of Teflon™ (PTFE), PTFE is the best insulation material used in the cables industry which has the lowest dielectric absorption.

Using Teflon™ (PTFE) as insulation is a prime consideration in Hi-End interconnects. Teflon maintains a low capacitance and very high resistance between the internal leads which keeps interaction between channels to minimum.

The low dielectric absorption of Teflon allow locating the main conductors in the GREEN 1 cable in very tight configuration- which renders the GREEN 1 very high bandwidth cable while maintaining a low capacitance. Yet another benefit is that Teflon also bonds very tightly to the metal conductors and prevents oxidation of the metal over the years. It is only the high cost of Teflon (PTFE) cables which leads manufactures to choose inferior plastics, such as PVC, as insulation.

Usually Teflon wires tend to have relatively long "Burn in" period, so it takes about 120 hours for the cable to sound at it best.

Teflon is also highly durable- actually you can put the AR Sound GREEN 1 in the oven at 180 Celsius degrees and nothing will happens to the lead! - except to the rubber gourmet of the XLR connector.

The GREEN 1 is a light weight interconnect. While many manufacturers tend to sleeve their interconnects with a lot of rubber outside the conductors to keep its look more impressive, this cable's outside diameter is only 3.5mm but the signal conductors are 21AWG -0.72 mm diameter of copper alloy.

The PREH DIN connectors contacts are made of sliver plated brass and this ensures perfect metal bonding in the solder joint between the silver content of the signal wire of the GREEN, the silver plated connector pin and the silver Solder. The PREH DIN connectors have been proved for many years and had established their reputation for robust and reliable performance.

A version with a 3.5mm stereo Neutrik Jack (Gold plated over copper alloy) enables the connection of Minidisc, Iphone, MP-3 and other small music source gear to amplifiers with DIN 5 sockets.

Directionality mark is added at the source side with the logo "AR Sound GREEN 1"

Sound Quality

The first thing you will notice is details you have missed before... It's like a curtain from the music that has removed.

The musical detailing flows effortlessly, in a natural manner, without any emphasis on any part of the audio frequency spectrum.

The bass region is clean, very fast and solid, free from distortion or time smears.

Superb sounding midrange frequencies - crisp detailed "sweet" vocals enable the listener to hear the singer's words easily.

High frequencies are rendered crystal clear, natural and glare free, while Brass instruments sounds become devoid of the harsh metallic sound common in many other interconnects.

The sound stage is wide and clear, with superb focus.

Technical specifications:

75/100/120 Centimetres of aerospace grade cable with shielded twisted pair balanced stereo pair cables, each main conductor contains 19 conductors of 34AWG silvered copper alloy stranded cable.

(total of 0.75 mm (1/32") diameter of copper-silver alloy pair conductors (21-22 AWG)) per each channel.

Primary conductors Insulation: 1/16" PTFE.

Shield: silver plated OFC copper. (minimum 92% converge)

Resistance: 48 milliohms/meter (14.6 milliohms/feet).

Capacitance: 112 pf/meter (Hot to screen).

Outside Diameter (nominal): 4 mm

External Jacket: FEP

External colour: Semi-transparent light green.