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SONY advertises "high quality sound solder" in their Walkman

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ebastler:

--- Quote from: Haenk on January 24, 2023, 08:12:19 am ---Copper is not exactly a tough material, so it's likely totally scratched after one day of careful use.

--- End quote ---

SONY is overly creative in their marketing, catering to audiophools, but their engineers are not stupid. What I gather from the fluffy descriptions is:

The "gold-plated OFC copper" piece is the internal chassis/frame, which holds things in place and probably has some shielding functionality. I can't see much value in the gold-plating, OFC, or copper for that matter, but I don't doubt that this will do the job. The outer shell is aluminum, with "gold-colored" anodization. Nothing special, but tough enough.

AVGresponding:

--- Quote from: Haenk on January 24, 2023, 08:12:19 am ---Copper is not exactly a tough material, so it's likely totally scratched after one day of careful use.
For this price, I'd expect a gold anodized Titanium casing with maybe copper coating on the inside

--- End quote ---

Surely a TiN coating is the one you want? On the outside, I mean. Then, Au plating on the inside.

Haenk:

--- Quote from: AVGresponding on January 24, 2023, 10:17:07 am ---Surely a TiN coating is the one you want? On the outside, I mean. Then, Au plating on the inside.

--- End quote ---

Great idea! Add sapphire display glass and then we are talking 8)

Whales:
Oh my god the headphone jack is non-standard.


--- Quote ---4.4mm balanced connector
--- End quote ---

Yes apparently this is a thing.



I've never had interference pickup problems with headphone cables.  Balanced is completely overkill for this length of cable + current levels.

If I did have interference problems with ordinary headphone cables: that's a great diagnostic tool to tell me that something is serious wrong in this room.  Like a broken transmitter (or a microwave oven with door open and microswitches defeated).

Maybe they're trying to avoid headphones pickup up >1MHz, injecting it back into the music player, rectifying it and you hearing it back?  EDIT: Why am I bothering to justify this   :P  We have EMI immune opamps for a reason.

Ed.Kloonk:
The only reason I thought of was for someone to plug a backing track into mixer/recorder while playing an instrument. All these different things plugged into SMPS used to cause problems.

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