Technics SL1500 phono stage connection

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I don't understand why longer cables are a requirement. Most turntable cables are that length for a reason and better screened????
If they worked well enough to be fitted in the first instance what has come along the require this?

Of course supplied TT cables are adequate*, with no need for changing - and extension best avoided.
But in that particular club there were hum issues and much disconnection / reconnection and movement by different, non- careful DJs.

The stranded-screen bootlace cable on those decks was replaced with triple screened durable cable - and longer to avoid the need for joins.

*Having said that supplied cables are adequate....despite great care, the thin, molded stuff on my Rega arm went intermittent on one channel - that's why I fitted sockets on my Thorens.

I can understand why the OP isn't keen on his captive cables - even on the king of durable turntables.