The JaCkMan has to fill some giant shoes and it manages to have the same mid-gain drive sound that reacts beautifully to your playing and guitar volume. Just like the classic rock monster, the JaCkMan needs a bit of help to push it further. Use a TS-type pedal (like the Joyo Green Legend or Vintage Overdrive) to push it into higher gain territory and hear it sing. The amp operates with a single 12AX7 tube in the preamp and uses a solid state power amp. The FX loop enables you to put your time based effects (or Phasers, Flangers and Choruses) behind the drive section and keep the effects sharp and not prevent them from being too muddy. The amp also has a CLEAN channel that can take pedals really well, which makes it flexible and a great little companion for many situations where your “big”head is just not sensible. The amp has a speaker out rated at 8?. Careful, the amp is small, but loud… its 20 Watts can be quite a handful. If you want to practice quietly, use the built in headphone out with speaker emulation. The icing on the cake is the BLUETOOTH connectivity. Easily connect with your BLUETOOTH enabled device and play music through the BantamP. This is great to practice with PlayAlongs or to learn songs. Features: Bluetooth music playing function Speaker impedance?8? 1 x 12AX7 Preamp tube Bluetooth music playing function 1 x FX LOOP CLEAN/OD Dual Channel Rated power?20W Speaker impedance?8? Input AC 110-240V 50/60Hz OUTPUT DC18V/2.0A Size 163mm*110mm*140mm