which turntable or how to convert to balanced phono setup?

What I am talking about, what you say happens, is feeding a differential amplifier with a single-ended signal where you say the SE signal is converted to balanced mode.  If you don't do anything with the SE input (transformer input or etc), except hook it up to the balanced input via RCA, then you are driving one half of the balanced circuit (typically the positive phase) with the hot input from the SE source, and the other half of the balanced circuit (typically negative phase) is grounded by virtue of being connected to the ground side of the upstream SE input.  It's really not much different from hooking up a phono cartridge in typical SE mode. You would not get the benefit of balanced operation that way. This is even assuming that the RCA input on the TEAC is connected properly to the balanced circuit, rather than being connected so as to drive the balanced circuit in SE mode. You can't create a balanced source by waving your hands over an SE source. Or please tell me what is driving the negative phase of the balanced input, if you are still convinced I am wrong.

lewm

What I am talking about, what you say happens, is feeding a differential amplifier with a single-ended signal where you say the SE signal is converted to balanced mode.

I've never said that because the turntable output isn’t singled-ended. It’s balanced, (floating) and in the Teac then processed by a differential amplifier. I’m puzzled as to why you struggle with this simple concept, or why you’d question that the Teac is "... a fully-balanced circuit design throughout all stages."

Did you watch the McGowan video?

https://www.youtube.com/watch?v=ZiF4sWRlsQw

OMG! Please don’t talk down to me. I originally assumed you were referring to the case where you feed a signal from a SE component (NOT a phono cartridge) to a balanced component. For example, a SE phono stage into a balanced linestage. You can’t directly drive a balanced device in balanced mode with an inherently SE device. As we all know, a phono cartridge is inherently a balanced device, so what I wrote does not apply.

lewm

...  I originally assumed you were referring to the case where you feed a signal from a SE component (NOT a phono cartridge)

From the beginning, this thread has been about the Teac PE 505 balanced phono preamp. I’ve not spoken about anything other than phono in this thread and here’s what I wrote back on 6/18 - the second comment in this thread:

Most turntables/pickup arms provide inherently balanced outputs although - strictly speaking - they’re really floating. That is, they have a separate + and - for each channel, and a ground that is not connected to either. (That’s the purpose of the separate ground wire.)

Hopefully you now understand that in the Teac the RCAs do not "ground the negative phase of a balanced signal inside the chassis and convert to SE operation," contrary to your claim.

The words you quote in italics are of course correct but have nothing whatever to do with the PE505 specifically and prove nothing.  However, I finally found the owners manual on line. It is very dumbed down, but if you look at the diagrams on the right hand side of page 9 in the English language section, there is a hint that you are correct.  Also, on the page with specs, the gain is not different when you feed the RCAs vs the XLRs. This too suggests you are correct.  Note the caveat on page 9 about feeding the balanced inputs from a TT wherein the outputs are grounded to the TT or tonearm. As they say and I said, this negates the balanced operation.