The Naga Viper is a booster in the grand old tradition of the Dallas Rangemaster "Treble-Booster". The Rangemaster has been used by many influential British guitarists including Tony Iommi, Brian May, Marc Bolan, and KK Downing and Glen Tipton of Judas Priest. These guitarists, while completely unique in their styles, share the Rangemaster secret of boosting their cranked tube amps into a juicy, harmonic-laden rock tone that always cuts through the mix.
The Naga Viper is our version of this famous circuit and it enhances the classic circuit with the addition of two extra controls - Range and Heat. The original Rangemaster had just one control - Boost. The Range knob is a continuous control allows you to go from classic treble-boost to a full-range boost and anywhere in-between. The original could only function as a "treble-booster". The Heat knob gives you control over the gain level, unlike the original which was fixed at maximum gain.
The BOOST 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.
The HEAT 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 over- drive 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.
The RANGE control sets the frequency response of the Naga Viper. For the classic treble-booster response, turn this control full CW. 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 . 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.