We visit Gravity Studios where Doug McBride shows us the MASELEC MLA-3 multi-band compressor. To understand this compressor, it's important to pique into designer Leif Mases' brain. Leif, named after one of the most badass vikings of all time, made his own name as an engineer and producer, working with bands like Led Zeppelin, Black Sabbath and ABBA (you can't spell Black Sabbath without ABBA).

Now, Leif works with mastering hardware, and Doug McBride works with the MASELEC MLA-3. It's a labyrinth of inter-working knobs that Doug navigates us through like its the Denmark Strait en route to Greenland.