The Series One 45 is an innovate combo that features 2xEL34 valves that combine with its Celestion Vintage 30 speakers to create awesome tone. By switching both preamplifier and power amplifier parameters the Series One 45 delivers both Class A style tones with a bell-like ring and classic push-pull crunch depending on the mode selected. The patented ISF control removes the limitations of traditional designs allowing you to tune the tone to exactly the sound you are looking for. DPR can reduce the power down to 4.5W and MIDI switching and a series effects loop make this the ultimate pro's combo.