Measurements of TransAudio（China）DRV134 RCA To XLR Adaptor Converter

[WolfX-700]

 

[pkane]

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Thank you for doing these measurements! Can you please post the result of a loopback test with your AP? This will help in interpreting such low-level distortion results.

 

[WolfX-700]

Thank you for doing these measurements! Can you please post the result of a loopback test with your AP? This will help in interpreting such low-level distortion results.

OK

 

[pozz]

What's the source of rising SINAD at high freqiencies?

 

[Soniclife]

Can you also please show pictures of the back of the unit and a link to the manufacturers page, for more info.

 

[Soniclife]

Is this unit active or passive?

Edit, just seen the green light on the front, bit of a clue .

 

[WolfX-700]

What's the source of rising SINAD at high freqiencies?

I think it is related to the AES17 filter.

 

[WolfX-700]

Can you also please show pictures of the back of the unit and a link to the manufacturers page, for more info.

https://item.taobao.com/item.htm?spm=a1z09.2.0.0.302e2e8dtnOviz&id=557950674717

 

[PierreV]

I imagine it is this board https://www.aliexpress.com/i/32857451808.html in a custom case.

(edit: oh, OK - seems there are tons of similar designs)

 

[bunkbail]

https://item.taobao.com/item.htm?spm=a1z09.2.0.0.302e2e8dtnOviz&id=557950674717

Is this unit the one with Talema toroid?

 

[WolfX-700]

Is this unit the one with Talema toroid?

Cheaper one

 

[birkbott]

Where do you buy one of these?

 

[Martin]

Where do you buy one of these?

US $90.00 | Finished Z1 DRV134 2-channel HiFi Single-Ended Balance Converter RCA To XLR For AMPLIFIER
https://s.click.aliexpress.com/e/nHmr2Lcc

What is the advantage of using this over an RCA to XLR cable?

Martin

 

[birkbott]

US $90.00 | Finished Z1 DRV134 2-channel HiFi Single-Ended Balance Converter RCA To XLR For AMPLIFIER
https://s.click.aliexpress.com/e/nHmr2Lcc

What is the advantage of using this over an RCA to XLR cable?

Martin

Shipping is $38, wow. I have heard that simple RCA to XLR cables are not good but I've also heard that they are fine so who knows. I think it depends on how they are wired.

 

[jhaider]

US $90.00 |What is the advantage of using this over an RCA to XLR cable?

It looks like a line driver - 8V output. If you have a balanced amp with low gain then something like this is useful. If you get enough volume from a cable or Neutrik-type adapter, it is probably not worth the real estate on your power strip.

 

[Veri]

I bought one of these before the pandemic. Finally arrived from slow boat. Case is very 'DIY', but it's ok.
The conversion sounds totally transparent, as these measurements show. Output is doubled from RCA. I like it.

Cheaper one

I bought the cheaper BingZi because that's what you tested. No transformer hum and seems flawless to me

 

[Cbdb2]

Rca to xlr means nothing except what the conectors are. Is it -10dbv in and +4dbm ballanced out like its suppossed to be?

 

[Veri]

Rca to xlr means nothing except what the conectors are. Is it -10dbv in and +4dbm ballanced out like its suppossed to be?

It is +6dB (doubling the RCA voltage).

 

[Panelhead]

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. Very well laid out. I built a very simplified version into a line stage maybe 10 - 12 years ago. This one looks better than my diy.
See the trimmer pots in the power supply and relays on the output. Good Engineering. Never worried about a small difference in +/- rails to trim. Or turn on delay.
I chunked the DVR134 circuit and replaced with a pair of Cinemag line input transformers installed in the amplifier. Was cheaper than this, they were about 32.00 each in quantities of 10.

 

[Veri]

If anyone in EU reading this thread, I have one of these that I'm not using that I'd be willing to sell.
I replaced the DRV134 chips with mouser-ordered ones just in case theyd be fake.