Solid core OFC vs stranded OCC copper

I used Cardas for my speakers and amp , but it is harder to work with than other choices .  24awg from RCA inputs to 9.5awg to speaker binding post outputs .

There is no audible difference between the two types of wiring. The only time there is a difference is when one is more expensive than the other because the electrons know what the cost of the wire is.

I take back my statement about no experience with OCC speaker cables as I have Zavfino speaker cables, not the top of their line, in my exercise room system.  I love them.

@mceljo thanks

Neither a Litz like the Cardas has individual isolated stands that give a more cohesive balance and -0 interactions Teflon dielectric ,I tested all 3  types before

rebuilding my Loudspeakers with the Cardas .

I use and prefer OCC copper in my interconnects.  I have less experience and therefore opinion about speaker cables.

@petg60 - I’d suggesting reading these design papers.

https://www.iconoclastcable.com/story/index.htm

Why is my feeling that cable geometry, quality and treatment of wire, insulation and sheath materials matter the most. Also i would prefer to use solid core in a tubed system with horns and stranded on everything else. OCC, CCC, DUCC wires are definitely better sounding than OFC, but still cable construction remains important. Also depends on the connecting component.

@blue_collar_audio_guy OFC copper interconnects in varying solid or stranded designs (imo) tend to have a slightly more raspy sound and less smooth sound compared to true Ohno OCC or Pure Cardas Copper in my system. I've re-tested it countless times over decades with various brands. It was the one small thing I could change in my old SS systems.  

On the flip side, some brands with OCC crystal copper can smooth out the sound greatly with no grain which can also present this odd sense of a loss of texture and some tone loss compared to some higher end OFC or other pure copper stranded cables. Striking that midpoint is key and there are tradeoffs in both spectrums, imo. Start with lower cost demo/loaner cables if you can, might get lucky and find a good one!

To combat this, some designers will intermix a single silver strand or plated silver over copper, and the results varies yet again with different pros/cons. One of the reasons I went back to Cardas pure copper multi-stranded designs and have never looked back.

Results do seem to vary from one designer/manufacturer to the next.  For those who cannot hear a difference in their particular systems, or non-belivers, well they get to save real $$$ and good for them -  YMMY. 👍

@jasonbourne52

Yeah, there is. I’ve compared many types over the years and solid core is cleaner, less confused when music is busy, and yields blacker internote spaces..

IMO there is NO sonic difference between stranded and solid core.

I'm with @jaymark .

Solid core OCC in Teflon. 

Litz wire is a particular type of multistrand wire or cable used in electronics. The wire is designed to reduce the skin effect and proximity effect losses in conductors used at frequencies up to about 1 MHz.  It consists of many thin wire strands, individually insulated and twisted or woven together, following one of several carefully prescribed patterns

Certain patented cable designs favour stranded cables ( eg CARDAS)

Both the Clear and Cross lines feature Golden Ratio scaled, ultra-pure copper multi-stranded Litz conductors, carefully chosen dielectric materials, and innovative manufacturing techniques.Cardas litz conductors use ultra-pure copper, in a Golden Ratio scaled, multi-stranded arrangement. Each individual strand is coated in an insulating enamel.

Litz conductors must be tinned before they can be soldered to a circuit board or a connector. At Cardas Audio, we remove the outer jacket with hot tweezers, dip the wire in Cardas Rosin Flux Soldering Paste, and then hold it in a solder pot for several seconds, until the end is tinned.

The Clear line refines the design principles found in Cross, with new discoveries in metallurgy and termination techniques. Clear cables have Matched Propagation conductors, in which the propagation rate of the conductor is matched to that of the dielectric, as described in George’s latest US Patent, #7,674,973.

I'm same as spatialking. using stranded for internal can be issue with extremely small gauge wiring, frying individual strands when soldering. As for SQ, no overarching reason for one over the other IME.

I use solid core for internal chassis wiring and stranded for everything outside the chassis.  I do a lot of DIY stuff, so that makes sense to me.

Stranded copper because it is far more flexible. IMO there is NO sonic difference between stranded and solid core.

for what application?

I personally prefer to sonic signature of solid core OCC copper.