ELECTRO HARMONIX Nano Q-Tron

ELECTRO-HARMONIX Nano Q-Tron Envelope Controlled Filter

The Electro-Harmonix Nano Q-Tron is a scaled-down version of the popular Micro Q-Tron, offering the same organic, analog sound but taking up significantly less space on your pedalboard. This pedal does not require a separate expression pedal – the filter movement is controlled by the strength of your playing. The harder you hit a string, the wider the filter opens, creating expressive, "vocal" sounds.

The pedal features four main controls, allowing you to precisely shape the effect. Drive sets the sensitivity and filter range, Q adjusts the filter resonance peak (from subtle to very sharp), and Volume controls the output level. A rotary switch allows you to choose from three filter modes: Low Pass (passes low frequencies), Band Pass (passes mid frequencies), and High Pass (passes high frequencies).

Main Features

• Envelope Controlled Filter: A filter controlled by the dynamics of the input signal (no additional pedals required).
• Three Modes (Mode Knob):
  • LP (Low Pass): Emphasizes low frequencies, cuts highs.
  • BP (Band Pass): Emphasizes mid frequencies (classic "wah" sound).
  • HP (High Pass): Emphasizes high frequencies.
• Q Control: Sets the filter's bandwidth and resonance.
• Drive Control: Adjusts the filter's sensitivity and how widely it "sweeps" frequencies in response to your attack.
• Compactness: Durable "Nano" sized enclosure.

Technical Specifications

• Manufacturer: Electro-Harmonix (EHX)
• Model: Nano Q-Tron
• Type: Envelope Filter / Auto-Wah
• Circuitry: Analog
• Bypass: True Bypass
• Connections:
  • 1 x Input (Mono) (Impedance: 330 kΩ)
  • 1 x Output (Mono) (Impedance: 300 Ω)
• Power: 9V battery (included) or 9.6VDC-200mA adapter (not included, center negative)
• Current Consumption: 10 mA
• Dimensions: 114 x 70 x 53 mm

What's in the box?

• 1 x Electro-Harmonix Nano Q-Tron pedal
• 1 x 9V battery
• 1 x User Manual

Who is it for?

• Guitarists looking for a classic 70s "funk" and "soul" sound.
• Bass guitarists wanting to achieve a "gurgling" synthesizer-style tone.
• "Jam band" style performers (e.g., Jerry Garcia fans).