The SVEN4 is more than just converting the RCA to 'wire' connection. The Audio output from m-audio is unbalanced (example 0-8+ volts); however, your oem amp expects balanced input (4-, 4+ volts), which has less noise and more resistant to interference. That's what SVEN4 does for you. If you remove it then you may experience that the
sound is not loud enough. Some people cheat by putting a line driver without the conversion to balanced signal, and it feels that the audio is loud; however, that also boosts up noise.
Although with SVEN4, the sound was louder but I still needed a little bit more; so I have also put a line driver in between m-audio and SVEN4.
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