CM8 and CM4 modulation cables

Carrying the signal...  Caring for the music.

The type and the purity of the materials has been a major subject of research for Jean-Marie Fusilier whose initial activities in high frequency electronics lead to care about materials and shields for proper signal propagation and signal integrity. The CM4 is the result of years of development, formerly in cooperation with specialists in vinyl playback in Europe. The CM4 cable was then presented along with the HQS power amplifiers and was systematically chosen by the world-class studio professionals and music lovers in the USA, Europe and Asia. JMF Audio products stand the test of time. 

The manufacturing of the CM4 cable draws upon exceptional tooling and materials. The conductors are made of extremely pure long crystals. The construction is totally symmetrical, as always with JMF Audio's designs. The whole cable assembly requires very precise conductors and shield placement for optimal musical result. This cable design preserves signal integrity and is virtually  immune to microphonic effect (vibrations) and electromagnetic interference. The CM4 cable allows a natural, faithful and homogeneous sound rendering, timbres rightness and an exceptional coherent deep and wide three dimensional soundstage. Instruments of an orchestra are at the right place and sound natural.  

The CM4 creates a matched link between JMF Audio instruments. The philosophy is preserved. 
This cable has also successfully linked audio devices in different setups.

Single ended (RCA connectors) versions can be manufactured on demand. 

The CM8 is based on the CM4 and features advanced mechanical damping and shieldings for superior immunity to noise, electromagnetic interference and vibrations. As a result the CM8 is of a greater diameter and of a different finish. The manufacturing of the CM8 is a longer process.  

Since 2015, 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 in comparison to our references. The cables are delivered in the deluxe box they deserve.   


Key features :

  • PLC pure long crystal, specific to JMF Audio

  • XQD symmetrical design specific to JMF Audio 

  • TSD specific JMF Audio shielding technique. Improved with EHF super shield starting from CM4-E and CM8-C.

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

  • High quality metal XLR gold contacts connectors

CM8 -C

CM4 -E with RCA terminals, featuring proprietary EHF-Shield link

Present models:

CM4 -E

CM8 -C

Dia. 8mm. EHF shield. XLR connectors or single ended RCA with EXF link (dia. 4mm banana)

Dia. 15 mm. EHF shield. XLR connectors. Length 1.5 m (subsequent length on demand)

Comments:

The JMF Audio CM4 and CM8 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 it has been decided to limit the comments on this page to just a few. Music lovers are invited to discover and experience for themselves. JMF Audio would be pleased to guide and advise a representative.

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Mr. Antonio M., already owner of HQS 9001, PRS 1.5, DXC 2.2, PCD 302: 
"Coherence is the word that comes to my mind"

Mr. Mic. A., world class studio owner in New York City, multi platinum records producer, USA:
"I have used these modulation cables for years. They greatly respect the timbres and the sound stage." (2007)

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

Versions history:

CM8 -C

Introduction of proprietary EHF shieldings. Allows a total continuity with the isolation concepts inherent in the JMF Audio electronic devices. Major upgrade. (2016). Present model.

Initial model. Upgrade to CM8-C is possible and suggested.

CM8

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Present model.

CM4 -F

Inheritance from the CM8-C technology. Major upgrade. (2016). Single ended RCA version available, featuring external link for the EHF shield. (2018).

CM4 -E

Upgrade to CM4-E is possible and suggested.

CM4 -D

Upgrade to CM4-E is possible and suggested.

CM4 -C

Improved fabrication, which resulted in more detailed soundstage and sweeter mids response. Upgrade to CM4-E is possible and suggested. New stiff bright-black outter enveloppe.

CM4 -B

Initial reference for vinyl playback and studio monitoring interconnect (1990)

CM4

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