Check the listing for details. Tone King Royalist MKIII 40W Tube Amplifier Head. Condition: Very Good - Refurbished. Listed at 2370.25 USD. The Sovereign Sound of Vintage British Amplification Packing three legendary British tube-amp voices packed into a single head, the Tone King Royalist MKIII is a 40-watt powerhouse of boutique tube tone. This 2-channel amplifier head marshals three distinct British-style tube-amp voicings from the 1960s and early 1970s, ranging from a low-gain blues classic to all-out full-stack crunch, all accessed by two channel-specific 3-way switches. In addition, each channel also boasts its own dedicated Iron Man II attenuator for whisper-quiet true tube saturation, as well as two pull fat controls to beef up your bass response. You also get a classic British amplifier global control section, including a 3-band EQ and a Presence knob to tweak your tone to taste.