Wait. back up. you said it doesn't have that pop. Did it have it before? were you happen in the past? if so, it may be you that has changed. It may be time to re-adjust your eq settings. Your hearing may have changed over the years and that could be part of the problem.
Take a stereophile test cd and play some white noise through your system. Download the free audiotools app and measure that frequency response levels in your room from your listening position. See if they are flat. Then adjust your eq settings to make the sound better for you and your room.
Then, make a determination if you really want or need to upgrade. I'm betting that you probably don't need to.
enjoy