The Sunnaudio NU-1 Nucleus is an elegantly designed, compact and versatile boost/overdrive featuring a two-gain channel circuit. The different gain stages have different levels (Hi/Lo) but can also be controlled through separate knobs and toggled through the HI/LO Gain footswitch.
LO gain setting ranges from crystal clear to overdrive while
HI gain starts with rich clean harmonic sounds to full distortion.
No matter what gain is selected, the signal then gets routed to the “rest” of the circuit, comprising of a bigger Gain knob and tiny Tone and Focus ones. This is what they do.
Focus adjusts the sub-harmonic frequencies to your bass signal, or to contour your over driven guitar sound.
Tone for mid shaping the overdrives
There’s also an internal input impedance switch for optimum matching with any other devices.
The Nucleus™ NU-1 is a versatile dual Hi and Lo output preamp distortion overdrive with dual boost function that offers infinite tonal settings for many instruments. The NU-1 is crafted for electric and bass guitars and also can be used with most passive or active acoustic guitars pickups.
What you get is:
Multi instrument Preamp and Distortion with two gain channels, Independent Volumes, two simple and effective tone controls offering mid and low end tone shaping.
One deceptively sophisticated Gain knob, pure clean to overdrive
Two switchable channels: HI Gain and LO Gain which can be independently set for level output. Each channels gets its own LED knob indicating which channel is selected.
LO gain setting ranges from crystal clear to overdrive while HI gain starts with rich clean harmonic sounds to full distortion.
“Focus” adjusts the sub-harmonic frequencies to your bass signal, or to contour your over driven guitar sound.
“Tone” for mid shaping the overdrives
Internal input impedance switch for optimum matching
Two foot switches: Hi/Lo Gain & True Bypass
External DC Jack or 9v battery power (>80 hr typ. life)
Pure analog circuitry: varying the external DC jack voltage (3V – 12Vdc max) will alter the harmonic characteristics of the Nucleus