SR8 and SR4 speaker cables

Carrying the signal...  Caring for the music.

The development of the SR4 and SR8 speaker cables started soon after the launch of the new JMF Audio's product line. Between the HQS power amplifiers and the HPM loudspeakers, there had to be a link of the highest quality. Considering that significant signal power is drawn, JMF Audio's pragmatic approach prevailed in this domain too: pursuing lossless, with musicality...

The original SR4 was instantly acclaimed among JMF Audio power amplifiers owners for the astounding openness and precision in the musical rendering.

The SR4 and SR8 are hand-built by JMF Audio. The conductors are made of pure long crystals. Starting from SR4-C and SR8 models, the construction has been totally symmetrical as valued in JMF Audio's designs. The whole cable assembly requires very precise conductors and shield placement for optimal sound result. The manufacturing is a long process. The latest SR4-C and SR8-C models feature the EHF super shield with an additional link to chassis ground, which further improves immunity to electromagnetic interferences and electrostatic charges that are responsible for sound blurring. 

The SR4-C and SR8-C allow a natural, faithful and homogeneous presentation of music, rightness of timbres and an exceptional coherent deep and wide three dimensional soundstage. Instruments of an orchestra appear at the real place, letting the listener feel the space surrounding the musicians.   

The SR4 and SR8 cables provide a matched link between JMF Audio HQS power amplifiers and JMF Audio HPM speakers, especially when fitted with JMF Audio's specific LSS terminals (loss less dia. 6mm PGP gold terminals - 120A current rated).  
These cables have also been the link of choice between different configurations of power amplifiers and speakers for numerous music lovers, passionate or professionals.

Since 2016, version C of SR4 and SR8, each individual cable has been identified with a serial number with the corresponding manufacturing and measurement notes stored in JMF Audio's database. Before delivery every cable has passed through a break-in period and listening tests in our studios for verification compared to our references. The cables are delivered in the deluxe boxes they deserve. 

 

Key features 

  • PLC pure long crystal, specific to JMF Audio

  • XQD symmetrical design specific to JMF Audio (starting from SR4-C, featured on all SR8 versions)

  • TSD specific JMF Audio shielding technique. Improved with EHF super shield starting from SR4-C and SR8-C.

  • NAS bespoke solder made to JMF Audio’s specifications (solder of conductors and shields to connectors)

  • LSS loss less JMF Audio diameter 6mm specific terminals (120A reated), specific PGP gold or massive forks.

SR8 -C machined fork terminals

SR4 -C JMF Audio dia. 6mm LSS terminals on power amplifier's side / machined fork on speaker's side

Present models:

SR8 -C

Dia. 35mm, 8 main conductors, EHF shield with additional link

Dia. 22mm, 4 main conductors, EHF shield with additional link

length 2.5m, JMF Audio dia. 6mm LSS or fork terminals (subsequent length on demand)

SR4 -C

Comments:

The JMF Audio SR4 and SR8 cables have seduced music lovers from all areas. Experienced audio enthusiasts and sound engineers have found in the JMF Audio cables the precision, timbres rightness, amplitude, greatness in the presentation of music.

We are thankful to the enthusiastic JMF Audio Instruments for the music® owners for their feedbacks, comments and the wish for some of them to get the information published. 

However music loves are invited to discover and experience for themselves. JMF Audio would be pleased to guide and advise a representative.

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References to albums produced with JMF Audio’s instruments as well as links to reviews and books will be found on a dedicated page.
> References

 

Revisited TSD shield. Features EHF super shield with additional connection to chassis ground. New massive lowest loss forks. Major ugrade. (2017). Present model.

SR8 -C

Versions history:

Initial release, unique pure long crystal conductors. SR8 defined as the JMF Audio reference speaker cable. An original SR8 can be upgraded to SR8-C.

SR8

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SR4-C now shares the same designs as SR8-C. Major ugrade. (2017). Present model.

SR4 -C

Release of B version, as a smaller and more affordable (no XQD technology) version of SR8 and featuring traditional fork terminals.

SR4 -B

Upgrades:

JMF Audio products are designed to be references and to last. The base of these instruments is safe and modular. Upgrades are proposed for the original owner to take advantage of the results of our continuous research and development efforts, without the need for product change. More information can be found on our policy page. > Policy and Warranty

Previous models:

SR4

Conductors splitter made of walnut with laser engraved signs and logo. This cable does not feature the unique PLC pure long crystal conductors.

SR4 Prototype

Initial release, different metals for conductors, possibility to screw forks, banana or JMF Audio dia. 6mm terminals. This cable does not feature the unique PLC pure long crystal conductors.