1. You must assure you have your boxes or phones directly connected with the POD HD500, not with the soundblaster card, the notebook buildt-in boxes or so (deactivated or mute them).

2. You must have the POD HD500 ASIO driver installed and the POD HD500 connected over USB.

3. In Cubase you must select the HD500 as you AUDIO device for input/output. Choose the HD500 ASIO driver.

4. Click on the advanced options of the HD500 ASIO driver. You can also select START>All Programs>Line6>Tools>Line6 Audio-Midi Devices.

4a) On driver page you must select the suited "default buffer size", "default bit depth" as ASIO settings. Depending on your PC speed use as small value as possible. Sometimes it makes sense to change the value from time to time. If you play back all your tracks you might need a bufer of 256 or 512, whereas while recording your guitar with  just a view tracks, maybe 128 can work. The reason to to this is to reach the lowest lateny time, the delay between playing and hearing.

4b) Change to the" Input&Recording" page of the driver. Here are two sliders. For listening only the effected monitoring sound of your DAW (Cubase) while playing, the slider must be set to minimum (left side = off). The slider "Record Send Level" and the +18db box let you control the recording input level.

5) Now set the desired tracks active, and use only the monitoring button of Cubase to control the tracks you listen to.