Electro Harmonix Q-Tron Plus Envelope Filter

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Electro Harmonix Q-Tron Plus Envelope Filter

Electro Harmonix

Q-Tron Plus Envelope Filter

4.5 Expert Rating

Product Info

Article Number: 143705
Model: Q-Tron Plus Envelope Filter
Category: Wah Pedals
Price: $185.90

* Prices may vary. Check retailer for current pricing and availability.

The Q-Tron Plus is a seriously fun and expressive envelope filter. It's got a unique, almost vocal quality, and the added effects loop and attack response switch make it far more adaptable than the original. Great for funk, synth tones, and anyone wanting a quirky, dynamic filter sound – just be prepared to spend some time tweaking to find your sweet spot.

Product Description

  • Electro Harmonix Q-Tron Plus Envelope Filter
  • Effect Pedal for Electric Guitar and Electric Bass
  • Envelope Filter
  • Like the Q-Tron
  • but with an effects loop and attack response switch
  • Selectable low-pass
  • band-pass and high-pass filters
  • Resonant Peak controls the quality of the filter
  • Switchable high- and low-frequency sweep ranges
  • Sweep direction switch for up or down filter sweeps
  • Controls: Peak
  • Gain
  • Rotary switch: Filter Mode LP/BP/HP/Mix
  • Response Fast/Slow
  • Boost On/Off
  • Switch: Sweep Up/Down
  • LED: Effect on
  • Footswitch: Effect bypass
  • Connectors: Input (6.3 mm jack)
  • output (6.3 mm jack)
  • FX send & return (2x 6.3 mm jack)
  • Power supply connection: Barrel connector
  • 5.5 x 2.1 mm
  • centre negative
  • Power consumption: 35 mA
  • Power supply with a 24 V DC mains adapter (included)
  • True bypass
  • Dimensions: (W x D x H): 146 x 121 x 64 mm

*Note:* Battery operation is not supported.

PROS
  • • Versatile filter modes (LP/BP/HP) offer tonal sculpting beyond typical wah
  • • Effects loop allows for complex signal chains and external modulation
  • • Attack response switch provides nuanced control over the filter's responsiveness
  • • Included 24V power supply simplifies setup and eliminates battery concerns
CONS
  • • Q-Tron's sound can be polarizing; not universally appealing for all genres
  • • Build quality, while decent, uses primarily plastic housing, feels less robust
  • • The resonant peak control can be tricky to dial in without unwanted squeals

Product Video

Key Features

Wah Type Envelope Filter (Q-Tron)
Controls Peak, Gain, Filter Mode (LP/BP/HP/Mix), Response (Fast/Slow), Boost (On/Off), Sweep Direction
Auto/Manual Manual (Envelope Follower)
Bypass Type True Bypass
Power Supply 24V DC (included)
Weight Approximately 3 lbs

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Frequently Asked Questions

The 'Response' switch changes how quickly the filter reacts to your playing dynamics; 'Fast' is more immediate and percussive, while 'Slow' creates a more gradual, sweeping effect.
While the Q-Tron Plus doesn’t natively support expression pedal control, the effects loop allows you to use external modulation sources to influence the filter’s response.
The resonant peak control can introduce unwanted noise if set too high, so careful adjustment is needed to find a balance between character and unwanted squeals.

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