I am using around 23 feet RCA-RCA Kubala Emotion,
that I have used from my Messenger pre to Vac
Rennaisance amp. This was for a short period, but had
no negatives I heard. I have ordered a Phi 300.1, so I
will hopefully be able to chime back in here soon.
I have been looking for a short K-S 2.0 meter run on
the Gon to experiment and see if the long RCA has any
negative effects. I dont want to start a new subject,
but this would involve moving my 40" rack with TT in
between my speakers. This seems to be configuration
that most use in order to avoid long RCA runs like mine.
My preamp is RCA only and is a keeper for now,
so balanced is not an option. FWIW, the Messenger seems
to have little trouble driving long RCA runs. The preamp
may be another variable as far as longer RCA runs go.