Combo amps contain speakers built directly into them and connect to cabinets via speaker cables designed to carry stronger signals than regular jacks. For optimal sound quality, head and cabinet impedances should ideally match.
Tube, or valve (‘valve’), amplifiers use glass vacuum tubes in their preamp and power amp sections to produce natural distortion beloved of guitarists. Laney Lionheart and Ironheart series tube amps feature dual gain structures that enable you to drive the tubes into saturation at lower volumes while still producing natural sounding distortion.