RANGE: This control sets the frequency response of the Naga Viper. For the classic treble-booster response, turn this control full CW. If you are playing into a cranked British style tube amp, you'll get those famous sounds! If you find you could use some more fullness, turn the Range knob back until you get what you're after. This knob is particularly useful for dialing in a thinner sounding single coil guitar or if you are boosting a Fender style amp or an overdrive pedal such as the DLS MkII or CB30.

With the Range set around noon, you'll find that the frequency response is fairly "flat" with a slight enhancement to the treble frequencies. As you turn the Range control CCW from noon, bass frequencies will start to get boosted as well.

The way the Range control works is it sets the lowest bass frequency that gets through. The "treble" frequencies are always being boosted.

BOOST: This control sets the output level of the Naga Viper. For overdriving amps or overdrive pedals, you'll normally want to set this control fairly high. You'll notice that as you turn this control you'll hear a slight whooshing or crackle type sound – this is normal and is due to the traditional Rangemaster circuit used for the Boost control.

HEAT: This control sets the gain level of the Naga Viper. At full CCW, you will get a clean boost. At full CW, you will get the traditional Rangemaster response which is a slightly dirty boosted sound that doesn't sound that great into a clean amp but into an overdriven amp it is like magic! For dirty boosting, start with the Heat control turned all the way up and then back it off slightly if necessary to get the overdrive sound you are looking for. At full CCW, you will get a clean boost which works great as a "MORE" pedal, making your sound louder with a nice presence into either a clean or dirty amp.

You can use a variety of power sources to power your Naga Viper. It supports standard DC power supplies from 9 to 18 volts and, of course, batteries. We encourage you to experiment with different powering options as they affect the tone and response in subtle ways. Our favorite is to use an old school carbon 9-volt battery for the sweetest tone.