Safeguard Your Tone at Any Volume The Tone King Ironman II is a power attenuator. It enables you to operate your amplifier at max capacity without shaking the rafters. But it's much more than a simple volume knob. The Ironman II boasts a tuned reactive impedance curve that approximates a real speaker load, along with transformer-coupled attenuation circuitry that preserves the tone and feel of your amp. The result is natural power-tube distortion at bedroom- and studio-friendly volume levels. Benefit from a bevy of player-friendly goodies, such as a DI output with analog cabinet simulation, dummy load capability, dual impedance controls, and more. Whether you want to dial back your amp's volume in your practice space or go cab-free in the studio, the Ironman II will safeguard every nuance of your hard-earned tone.Tuned reactive load preserves your amp's sound and feel A real speaker's load isn't stagnant or even linear.