A popular shortcut in Final Cut Pro is the ability to increase or decrease audio levels with a keyboard shortcut. The closest you can come in Adobe Premiere Pro is a little customization. Choose Premiere Pro > Keyboard Shortcuts (Edit>Keyboard Shortcuts). In the search field enter Audio Gain. Map this command to an easy to remember shortcut (like Ctrl + =). Now you can press it to bring up the Audio Gain dialog box. The new dialog already has the Adjust Gain by field selected. Just enter a number and press Return or Enter. Yes, it's two steps instead of one, but its also more flexible.