Sunnaudio Announces the Nucleus NU-1
October 13, 2020 · 6 sources

Sunnaudio, based in Belmont, CA, announced the Nucleus NU-1, an all-original analog preamp pedal that the maker describes as a "Dual Boost Preamp Distortion." The NU-1 is a compact two-channel preamp with two switchable gain channels, Hi Gain and Lo Gain, each with an independent level control, so a player can set a solo level to jump above the mix or match a lower-gain part to a high-gain tone12. Guitar World described it as an all-analog integrative preamp and overdrive promising "harmonically rich saturated sounds"3.
The two channels cover a wide range. The Hi channel goes from rich clean tones to fully saturated grind, with the HI gain boost putting out up to 60dB of gain, while the Lo channel goes from crystal clear tones to a nice overdriven breakup1. Gearnews reported that the pedal's dynamic analog circuit should work well with electric, acoustic, or even bass guitars, and that it can handle both passive and active acoustic guitar pickups4.
Key features as announced:
- Two footswitches: Hi/Lo Gain channel switching and True Bypass1
- One shared Gain knob, with each channel's knob lit by an LED showing which channel is selected1
- Independent level control per channel5
- TRS balanced output1
- Internal input impedance switch for optimum matching6
- Power from a 7.5V to 12V external DC adapter or a 9V battery1
- Fits in a standard Hammond-sized space on a pedalboard1
The pedal was designed by Sunny Wai, lead engineer for Sunnaudio, and senior product developer Marc Games1. Each pedal is built to order4, and the launch edition came with oversized footswitch covers in red, blue and green3.
The Nucleus NU-1 listed for $285 MSRP1, with Guitar World reporting an introductory price of $2653. Guitar.com reported the pedal as available at sunnaudio.com5.
Players quoted in the announcement included Jude Gold, host of the No Guitar Is Safe podcast and lead guitarist of Jefferson Starship, who said1:
"Really great tone! I'm really enjoying the Nucleus, two great sounds in one small footprint, which not all of my dual mode pedals can say."1
Bassist Pete Canton added1:
"Regardless of what bass rig I'm playing through, I can go from a throbbing dub tone to a ripping punk vibe that cuts."1
Sources (6)
- Sunnaudio Nucleus NU-1: New Dual Boost Distortion, Premier Guitar, 2020-10-12
- Sunnaudio's Nucleus NU-1 is dual boost preamp with two flavours of drive on tap, MusicRadar, 2020-10-19
- Sunnaudio goes big with the Nucleus NU-1 dual boost preamp, Guitar World, 2020-10-20
- SunnAudio NU-1 Nucleus: an analogue preamp/distortion pedal, gearnews.com, 2020-10-13
- Sunnaudio’s Nucleus NU-1 preamp pedal ranges from crystal cleans to high gain, Guitar.com, 2020-10-13
- Sunnaudio NU-1 Nucleus Preamp, Pedal of the Day, 2020-11-24