How to choose an attenuator

Thanks georgehifi, but that comes with RCA. My whole idea was to be able to used the balanced outputs. When I use SE outputs the Vrms is down to 2 and is more manageable anyway.

There are 10, 15, 20, 25, 30 etc dB attentuators and I would prefer to just buy one pair with the correct values and forget about them.

According to a calculator (http://aetechron.com/calculator-Volt2dB.html) a 10dB correction should be right, but then there are other criteria like impedance so I get puzzled a bit.

I want to bypass the volume control of the DAC, and control the volume from the app, while the information is still purely digital.

Also, when I don't use the bypass mode then there is always the danger of someone (i.e. the kids or some guests) would put the volume too high and damage the system. Especially on the app it is very easy to do so just with a slip of the hand.

Thank you very much Al, that answers my question. I think I'll get a pair of 10 dB attenuators and give it a try. Rothwell, Shure and Audio-Technica seem to have similar price levels.