I hooked my guitar this evening up to my Line 6 Spider V 30 amp, and had no volume at all through the speaker. First time that has happened. Tried to plug in some headphones - still no sound, except with the amp's built in drum loops. I was concerned my amp was kaput. Then I checked the volume knobs on my guitar and realized they were both turned down to zero or close thereto. The knobs were probably turned down when I put my guitar into its soft side, tight fitting case (or when I pulled the guitar out of the case to play it). Regardless, it wasn't the amp. If you have this challenge, check the volume knobs on your guitar as one of your steps. Hope someone finds this info. helpful.