No, bands 9 and 10.

Band 9 is used for bass. Band 10 for treble. Both work identically, just using different frequencies...I'll illustrate using the bass;

If bass is set to zero, the underlying EQ setting is applied. So if you never use hijack's bass setting, EQ band 9 is always active. When you adjust the bass, EQ band 9 gets reprogrammed with the frequency, Q and appropriate dB setting to approximate the desired bass setting. When you reset the bass to zero again, the original EQ band 9 settings get reprogrammed. Thus, if you have a valid band 9 EQ, it will be active as long as bass isn't. The same goes for band 10 and treble respectively.

So it's possible to use 10 bands of EQ - but advised to make bands 9 and 10 the least important bands if you want to use bass and/or treble.