Allowing you to connect your laptop, MP3 player, or other line-level consumer device to a balanced destination, the Trim-Two Stereo DI with Volume Control from Radial Engineeringprovides a variety of input options, including 1/4", RCA, and stereo 1/8" connections. For additional control, there is a variable level knob that allows you to adjust the output signal level. Designed to provide a linear response from 30 Hz to 20 kHz, the Trim-Two will not color or alter the sound of your input. 
The unit features Radial's Eclipse transformers, which help isolate the input signal from the output to eliminate noise and interference, and deliver a linear frequency response from 20 Hz to 18 kHz. The Trim-Two is constructed from 14-gauge steel, making it sturdy enough to use live.