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Production suspended until further notice.



Actual size: 8"l x 3.25"w x 3"h (fully extended/open)
Weight: 46 oz.

The Killer Wail is considerably warmer and more “musical” than conventional wahs. Each of the three modes offers a wider, smoother, and more even sweep.
HIGH: Moves the wah filter to the high range of the guitar, perfect for leads or funky staccato chords.

EXTENDED: Tunes the wah to cover the entire range of the guitar. In this mode, the filter is not so “peaky” and is a good choice with clean guitars when you want a smooth and wide sweep.

DEEP: Moves the filter down to accentuate the lower strings of the guitar.

Which warm-blooded guitar or bass player doesn’t love the exciting, emotional weep of the unmistakable wah wah, that vowel-like cry of countless classic recordings? Nostalgia, however, tends to make us forget some of the shortcomings --excessive noise, a thin strident sound with certain guitars or pickups, and unreliable mechanical construction. The Killer Wail overcomes the classic wah’s faults while preserving the original circuit design. We’ve utilized superior quality switching in a chrome-plated, stomp-proof cast-metal housing held together with a solid bolt. Use your boot to free this Willy for blubber-fat wailing wah.


Enhanced Features:

Mode Selector Switch: Provides a variety of curves for greater flexibility -- for bass as well as guitar.

Humbucking Inductor: Custom wound and potted inductor coil cancels noise and reduces
microphonics, while faithfully reproducing the saturation and harmonics of vintage wahs.

Bypass Switch: There’s an extra pole to remove the circuit load, which can muddy & weaken the signal.

Click here for a sound sample from Tech 21 which was made with the following:

• Killer Wail in the Extended mode.
• Fender® Lonestar Strat guitar.
• Tech 21 Trademark 10 combo amp with British Sample Setting. (No additional effects.)
• Shure® SM57 microphone. Computer sound card.

Click here for a sound sample by Blues Saraceno, which was made with the following:

• Killer Wail (rhythm) in the Deep mode.
• Killer Wail (lead) in the Extended mode.
• Custom "Gold Sparkle" Ernie Ball® Albert Lee guitar, with Seymour Duncan® pickups.
• Kustom® practice amp.
• Shure® SM57 microphone.
• Neve®.
• Computer sound card.

Click here for a sound sample by Fred St-Gelais, which was made with the following:

• Part 1 0:00 to 0:08 + ending: Deep mode
• Part 2 0:08 to 0:15 + ending: Extended mode
• Part 3 0:15 to 0:24 + ending: High mode.
• Clean Guitar: 0:24 to 0:28 + 0:34 to 0:42: Extended mode

• Fender® Telecaster (bridge pickup)
• Tech 21 Trademark 10 combo amp:
0:00 to 0:24 + ending:
Basic Lead Sound (Preset "K" from the Trademark 10 Sound Sample Settings Diagrams page)
0:24 to 0:28 and 0:34 to 0:42:
Basic Clean sound (Preset "H" from the Trademark 10 Sound Sample Settings Diagrams page)

Shure SM57 microphone right in front of the cone.

BASS GUITAR - (0:00 to 0:08 + ending):
• Fender® Jazz Bass
• Tech 21 SansAmp GT2 (SVT® setting)
• RNC1773 Compressor
No additional EQ applied to guitars.
2dB Boost at 100kHz shelving applied to bass and drums in mixing stage.
Subtle stereo delay applied to guitars in mixing stage.

Written, produced and mixed by Fred St-Gelais ( at "Studio La Chambre," Quebec, Canada. Guitar, bass, loops and programming by Fred St-Gelais.

Additional drum loops courtesy of Spectrasonics' Backbeat.

Operable with 9V alkaline battery (not included) or optional Power Supply (Tech 21 Model #DC2).


®Registered trademarks of their respective companies.


┬ęTech 21 USA, Inc.