Нам надо установить параметрический эквалайзер MathAudio Headphone EQ, для foobar2000 это бесплатно.
http://mathaudio.com/download.htm
MathAudio Headphone EQ VST, VST3, AU and Foobar2000 Component
Download Foobar2000 Component - FREE!
В зависимости от версии foobar2000 и версии алгоритм установки может немного отличаться.
Don't unzip the downloaded zip file.
Step 1: Open the foobar2000 preferences dialog (click File > Preferences or key CTRL+P).
Step 2: Go to the Components page.
Step 3: Click the "Install..." button and select the component archive, or simply drag it to the list.
Step 4: Press "OK", you will be prompted to restart foobar2000 in order to load the newly installed component.
Step 5: Click File > Preferences > Playback > DSP Manager, then select "MathAudio Headphone EQ" in the right pane and click the right-to-left arrow to activate it. After that click the "Configure selected" button.
Step 6: Click the "Help" button and follow the instruction.