PedalBro

Envelope Filter · TWA

TWA WR-3 Wah Rocker

The TWA WR-3 Wah Rocker is an envelope filter with controls for threshold, decay, range, gain, and blend, plus a guitar/bass switch to tailor the effect to your instrument. Premier Guitar's reviewer gave it 4 out of 5 stars, noting it delivers funky envelope filter tones suitable for both bassists and guitarists.

  • 9V DC · center −
  • 50 mA
  • True bypass
  • Analog
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Used (asking)
from $117.96
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The rundown

Highlights

  • Envelope filter with six controls including threshold, decay, range, gain, and blend
  • Guitar/bass switch allows voicing adjustments for different instruments
  • True bypass design with wet/dry mix capability
  • Runs on 9V DC (50 mA) or battery power
  • Compact pedal measuring 73.4 x 114.3 mm

Best for

Bassists and guitarists seeking an envelope filter effect with instrument-specific voicing options.

Professional reviews

What the press rated it. We link to each review; read the full piece for the details.

Quick facts

Power
9V DC
Current draw
50 mA
Polarity
Center negative
Bypass
True bypass
Dimensions
73.4 × 114.3 mm
Controls
Threshold, Decay, Range, Gain, Blend, Guitar/Bass Switch
Status
In production

Where to buy TWA WR-3 Wah Rocker

Used listings asking $117.96–$117.96, median $117.96 (1 listing, small sample). Asking prices, not sold prices.

Current offers
SellerConditionPriceLink
ReverbUsed$117.96View

Prices last checked 22 hours ago. Links to sellers are affiliate links.

Frequently asked questions

What power supply does the WR-3 Wah Rocker use?

The TWA WR-3 Wah Rocker runs on a 9V DC supply at 50 mA center-negative, and is also battery-compatible.

Does the WR-3 Wah Rocker have true bypass?

Yes, the TWA WR-3 Wah Rocker features true bypass.

Can I adjust the wet/dry mix on this pedal?

Yes, the TWA WR-3 Wah Rocker includes a blend control for adjusting the wet/dry mix.

Similar pedals

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Specs from pedalfilter. Summary written by PedalBro from those specs and public descriptions.

Page last updated September 29, 2026.