About the Ace of Tone

The NUX ACE of TONE packs two classic overdrive circuits into one compact, pedal‑board‑friendly enclosure — giving you the power, flexibility, and tonal richness seasoned musicians demand.

On one side, you’ve got the high‑gain, bass‑rich “Tubeman MKII,” and on the other, the smooth, transparent “Morning Star” overdrive inspired by the legendary Bluesbreaker circuit.

With a smart internal routing system and tone‑shaping modes accessible by holding the footswitch, ACE of TONE gives you everything from warm, thick crunch to sparkling, articulate overdrive.

Whether used individually or stacked, these circuits open a world of tonal possibilities — from creamy blues and classic rock to full‑bodied rhythm and soaring lead tones.

Product Features

Dual‑Overdrive Design
Combines two distinct overdrive circuits — Tubeman MKII and Morning Star — in one enclosure, giving access to multiple overdrive textures in a single pedal.


Stackable Overdrive for Maximum Flexibility
Internal routing toggle lets you adjust the order of the signal chain (Morning Star → Tubeman, or Tubeman → Morning Star), enabling you to shape your gain structure and saturation character.


Tone Mode Options — FAT & SHINE:

FAT Mode: Engage on the Tubeman side by holding the footswitch — adds extra bass and warmth for a thicker, fuller low-end. 

SHINE Mode: Engage on the Morning Star side by holding the footswitch — boosts treble for a clearer, crisper tone, ideal for leads or articulate rhythm.  


Bypass & Power Options
BF/TB toggle switch lets you choose Buffer‑Bypass or True‑Bypass depending on your pedalboard setup to preserve tone integrity.


Expanded Headroom
Optional internal 18 V mode (switchable from 9 V) doubles the voltage internally — offering greater dynamic range and clean headroom under higher gain settings. 


User Controls — Precision Tone Shaping
Both overdrive circuits have dedicated DRIVE, TONE, and LEVEL knobs. This lets players dial in gain, tonal balance, and output volume independently for each side — ideal for blending or stacking.  


Analog Circuitry & Classic Feel
Both circuits deliver the warmth, responsiveness, and organic overdrive character players expect from analog overdrives — whether you're chasing vintage tones or modern crunch.

Specifications

Detailed product specifications and features

Technical

  • Input Impedance 2.2 MΩ
  • Output Impedance 1 kΩ
  • Power 9v External AC Adaptor (not included)

Connectivity

  • Input 1/4" (6.35 mm) jack
  • Output 1/4" (6.35 mm) jack
  • EXT.SW 1/4" (6.35 mm) jack

Hardware

  • Dimensions 4.1 × 4.5 × 2.3 inch
  • Weight 1 lb
  • Build Material Aluminum die-cast chassis

What's Included

1 x Ace of Tone, User Manual