Yes, it is a speaker cable. After reading more on the forum I have figured out that the gain was too high. Once it turned down down to below 3-4 o'clock the hiss stops completely. It's like there is a fine little line to when it is not doing to when it does do it. I have read that this is common in high gain amps.
When researching the HT5 and The G5, I found that the preamp tube is just a tube buffer. What does this mean? It is a 12ax7. Can this be changed for a different sound?
I have also found that the power attenuation sounds the best on 5w. It's a lot louder and the distortion sounds thicker higher volumes. The morph knobs also makes the sound clear and brighter when in USA, and gets deeper and thicker when in UK. Is this normal?
For my first tube amp, it is great. I like it a lot. Today I am going to unscrew the back of my speaker cabinet to find out what is inside. My reading has found that speakers make a big difference in sound. When I bought the cabinet I was told it was homemade by someone and he didn't know what speakers were in it. All he said was that is sounded really good and he used it more than any other in the store. I will post pictures when I am done.