The Laney Cub 10 is not just a bigger CUB 8, it is a totally different amplifier and comes from further along the evolutionary path of tube amp design.
The Cub 10 is a Class A/B design and produces 10 watts RMS of power from an output section loaded with a pair of 6V6GT's, driven from a pre amp loaded with 2 ECC83's. The pre amp compliment consists of a Tone control, a Volume control and a Gain control, along with a set of Hi and Lo input jacks. The Cub 10 houses a custom 10 inch speaker.
The Cub 10's Class A/B output section gives this amp a nicely pronounced mid range - which is where the natural frequencies of the guitar instrument sit. This means that the Cub 10 has a very natural and responsive mid range when run clean. Push the amp a little harder and things begin to get very Zeppelin-esque - think "Heartbreaker". Hit the strings harder and the amp breaks up ever so responsively, dial in more gain and the amp really starts to cook with vintage tone. The pair of 6V6GT's work hard to give plenty of low-end punch for a small tube amp, perfect for a bluesy solo.