This is a THR10II modeling amp. The THR10 amps are the best small amps you can buy. I am a fan of the first generation of THR10 amps than the THR10II. The THR10II removed the battery section, so this has to be plugged in, but it added a bluetooth feature. I have a few of the first generation THR10 amps, so I have no need for this one. They go for around this price used online. I am pretty firm on the price.