How to Adjust the Sensitivity of Your ION USB Turntable's DJ Deck in Serato Scratch Live 9 for Mac OS Lion or Mountain 'ion discover dj turntable sensitivity'

Are you having trouble getting your scratch sounds just right with your ION Discover USB DJ turntable connected to a computer running Serato Scratch Live 4.0.2 on Mac OS Snow Leopard, but after updating to either Lion (10.7.x) or later's Mountain Lion (10.8.x), only hearing static instead of the warm sound you're used to? Do not worry – this article will walk through how to adjust your turntable's sensitivity settings in Serato Scratch Live 9.

First things first: ensure that your ION USB DJ turntable is properly connected via a standard USB cable into one of the available USB ports on your Mac. Once it has successfully recognized and powered up, you'll see an icon appear in the top-right corner of your screen's menu bar with two overlapping circles inside – this indicates that Serato Scratch Live 9 is ready to go.

With everything connected and set up properly, let's dive into adjusting those sensitivity settings:

1. Launch Serato Scratch Live by double-clicking its application folder icon or searching for it in the Applications/Utilities directory.

2. Once you've successfully launched the software, click on 'Preferences' at the top-left corner of your main window.

3. In the Preferences dialog box that appears, navigate to the 'MIDI/OSC/Audio tab,' then scroll down until you see an entry labeled as 'Turntable 1 Sensitivity.' Click and drag this slider all the way to its minimum setting (represented by a small white dot on a black background). This will temporarily disable any external audio input from your turntables, allowing us to fine-tune their sensitivity levels without introducing unwanted noise into our mix.

4. Now it's time to adjust the actual gain settings for each individual deck:

a) Select 'Deck A' or 'B,' depending upon which channel you want to modify.

b) Click on its respective gain control button (represented by a small white circle with an up-pointing arrowhead inside).

c) Use your mouse wheel or trackpad gestures to adjust the Gain slider until you're hearing clean, distortion-free signal from either your turntable's built-in preamp or external phono/line input. Repeat this process for each deck as needed.

5. Once satisfied with your new gain settings, click 'Apply' and then close out of Preferences by clicking on its red X button in the top-left corner.

6. Finally, make sure that you've also enabled MIDI control within Serator's preferences (found under Edit > Preferences > Hardware Tab > MIDI tab). This will allow your turntables to communicate with Serato Scratch Live 9 via USB and receive updated gain information whenever necessary.

With these simple steps completed, you should now be able to adjust the sensitivity of each deck on your ION Discover DJ Turntable within Serato Scratch Live 4.0.2 running under Mac OS Snow Leopard (or later versions), ensuring crystal-clear sound quality from both vinyl records and external sources alike!

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