Yes, build your own pads. By pads, I mean "attenuation pad." These are devices or circuit meant to attenuate or insert a loss in your signal path.
There are 2 kinds of pads you can use... The first is called a "T" pad and is mainly used for unbalanced lines. The second is called an "H" pad and is mainly used for balanced lines.
We'll be building an "H" pad.
If you want a -10dB attenuation on your signal, use the values 150ohms for Ra, and 430ohms for Rb. These values are meant for a 600 ohm line, which is the impedance typically used in pro gear.
For other values, see table below: