For decades, valve combos have been the go-to for seasoned guitarists looking for rich, warm sound and a dynamic response. Unlike transistor and modelling amps, valve-driven amplifiers feature vacuum tubes to shape a unique timbre supported by natural compression and harmonic distortion for that coveted, life-packed sound that brings out all of the dynamics and nuances in your playing.
Pros and Cons of Valve Combos
Most valve combo amplifiers are outfitted with straightforward knobs for quick-and-easy tone adjustments, which is an advantage when you're after consistent sound and don't want to get lost in extensive settings and menus. While valve combos need a little maintenance every now and then, like replacing burned-out valves, for most guitarists, this is easily offset by the unparalleled sound that these amplifiers shape. The downside is that valve amplifiers are relatively expensive. Also, most players like to use an external overdrive pedal so they can tighten up the sound as needed or inject a little extra bite.
Different Valves Means Different Sound
One thing to look at when you're browsing through valve combos is the type of power amp valves they're equipped with, since these valves largely determine the sound and response. Big-name American amp builders like Fender, Mesa/Boogie and Friedman typically go with EL84 valves, while Marshall usually sticks to EL34 valves, which are known for their forceful mid-range and are excellent for hard rock. Other common valves are the 6L6 (ideal for tight-and-deep tone framed by clear trebles) and the 6V6 (perfect when you want vintage warmth).
