Tech 21 Richie Kotzen Signature RK Killer Wail

The Tech 21 Richie Kotzen Signature RK Killer Wail is a wah pedal from Tech 21, one of three new wah pedals the company unveiled alongside the Killer Wail v2 and the Killer Blue Wail. Premier Guitar reported anticipated worldwide availability of April/May 2025¹.

It is the signature model in the range, built for Richie Kotzen, a solo artist and former guitarist of the glam metal band Poison². Its distinguishing feature among the three is its relationship with Kotzen's own multi-effects unit: the RK Killer Wail is phantom power operable via Richie's Signature RK5 v3 Fly Rig, and that Fly Rig ships pre-configured to provide the power³⁴.

What it does

Like any wah, the RK Killer Wail sweeps a frequency peak across your signal as you rock the treadle, giving the vocal-like cry players associate with the effect. What sets it apart is how you switch it in and out.

Both the Richie Kotzen Signature RK Killer Wail and the Killer Blue Wail feature a spring-loaded rocker. It returns the treadle to its resting position, which is the bypass position, when you remove your foot, and the effect engages automatically when you press forward¹. There is no separate on/off stomp switch to find with your toe: the wah is on while your foot is down and off when it is not.

For a player, that means quick wah accents without hunting for a switch, at the cost of the conventional two-position toe-switch approach where the effect stays engaged while you hold the pedal still.

Power and the Fly Rig connection

The RK Killer Wail's other distinguishing feature is phantom power. Tech 21 describes it as phantom power operable via Richie's Signature RK5 v3 Fly Rig, and the RK5 v3 product page states the Fly Rig is pre-configured to provide phantom power for the wah³⁴. Premier Guitar's coverage of the RK5 v3 confirms the same arrangement⁵.

That means a player running the RK5 v3 can connect the wah and power it from the Fly Rig rather than from a separate supply.

The standard Killer Wail v2 takes a different route: both Killer Wails are phantom operable via both the Fly Rig 5 v2 and the Richie Kotzen Signature RK5 v2 Fly Rig, but only with a modification to those Fly Rigs³. The RK Killer Wail's pairing with the v3 Fly Rig needs no such modification, since the v3 comes pre-configured⁴.

Where it came from

The Killer Wail line moved to full-scale production in 2025 as three pedals: the Killer Wail v2, the Richie Kotzen Signature RK Killer Wail, and the Killer Blue Wail¹.

The Kotzen connection runs deeper than this wah. Tech 21's collaboration with Kotzen also produced the RK5 Fly Rig, a compact multi-effects unit built around an all-analog SansAmp tube amplifier emulator pre-voiced for clean tones, with 3-band active EQ, Level and Drive, plus a DLA delay section with Level, Time, Repeats and Drift controls, where Drift adds a random element to the modulation for tape drift-style textures⁶⁷. The RK5 v3 carries that line forward and adds the pre-configured phantom power output for the RK Killer Wail⁴⁵.

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