This is a fully featured very high quality 4 channel mic pre in good condition
Warm Audio say ...
The WA-412 has all of the features one would expect from this style of preamp... and more. Output Trim is available on every channel for precise control and creative gain staging. A Tone switch (transformer input impedance) is also available on each channel, which allows you to choose between a warm and punchy classic console tone, or go for a more open & neutral sound.
Technical Specifications
Here is the full spec >WARM AUDIO<
E&oe
H14