Originally Posted by imaginaryday
That´s what I thought and heard:
UAD´s Massive Passive has 3dB less lo-end and 1dB more mids and highs.
When you level match the files, the bass has the most energy so the UAD example will have roughly 3dB more presence.
With 8-bit lo-fi style samples in the source material - nobody wants 3dB more presence which is a motherlode when mastering.
Flyingjay has set the Softube to sound good.
Copied the values to the UAD Massive Passive and/or tried to match the best he could.
So what we know now: The settings on both emulations of the Massive Passive don´t match.