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Morley Rex Brown Old Blue Wah Pedal, Sweetwater Exclusive

Wah Guitar/Bass/Keyboard Pedal with Electro-optical Design, Switchless Operation, 15dB Wah Level Control, and Buffer Circuit

Reinventing the Rex Brown Wah

Whether weaving walking bass lines under Dimebag Darrell’s frenetic solos or holding down the low end for Down, Kill Devil Hill, Crowbar, or Elegant Weapons, there’s no mistaking Rex Brown — he’s a true American original. The Morley Rex Brown Old Blue Wah is a spot-on re-creation of the Pantera bassist’s trusty ‘90s-era Morley Pro Series II Wah — a.k.a. “Old Blue” — complete with the original circuit layout and through-hole components. Able to accommodate guitar, bass, and keyboards with equal confidence, the Rex Brown Old Blue Wah delivers a larger-than-life sweep with phase-shifter-esque textures reminiscent of Morley’s original 1970s pedals. That said, it brandishes plenty of modern Morley design staples, such as electro-optical operation and switchless activation, ensuring whisper-quiet performance and trouble-free deployment. You also get a 15dB Wah Level control and a premium buffer circuit, along with a rugged cold-rolled steel housing, an LED indicator, and a glow-in-the-dark rubber treadle. Part of Morley’s Classic series, the Rex Brown Old Blue Wah enables today’s musicians to harness the sound of one of the company’s most coveted classics.

Resurrecting Rex Brown’s Pro Series II Wah

Rex Brown has stomped on a 1990s-era Morley Pro Series II Wah — his trusty “Old Blue” — for well over three decades. Old Blue has seen lots of action throughout the past 30-plus years, both onstage and in the studio, where it was brilliantly showcased on multiple Pantera albums. The Morley Rex Brown Old Blue Wah re-creates the original pedal in meticulous detail, right down to the original circuit layout and through-hole components. This circuit derives from Morley’s 1992 redesign, which first introduced the company’s now-standard electro-optical operation and switchless activation. There’s a reason why Morley’s electro-optical design receives so much acclaim around Sweetwater — its whisper-quiet operation makes scratchy pots seem downright antiquated, and it's highly resistant to outside noise and electromagnetic interference. On top of that, Morley's switchless operation makes these pedals a breeze to activate — just step on the glow-in-the-dark treadle to engage the wah and step off to bypass.

Morley Rex Brown Old Blue Wah Features:

Re-creates the ‘90s-era Morley Pro Series II Wah owned by Rex Brown (Pantera, Down, Kill Devil Hill, Crowbar, Elegant Weapons)
Employs the original circuit layout and through-hole components
Accommodates guitar, bass, and keyboards with equal confidence
Delivers a larger-than-life sweep with phase-shifter-esque textures reminiscent of Morley’s original 1970s pedals
Electro-optical design avoids scratchy pots and mitigates outside noise and EMI
Switchless operation — step on the treadle to engage the wah and step off to bypass
Wah Level control with 15dB of headroom
Premium buffer circuit ensures zero tone suckage
Rugged cold-rolled steel housing and an LED indicator
Powered by 9V battery or optional 9V adapter (compatible with most 9V adapters)
Eye-catching glow-in-the-dark rubber treadle

Specification	Detail
Pedal Type	Optical Wah
Analog/Digital	Analog
Inputs	1 x 1/4"
Outputs	1 x 1/4"
Controls	Level
Bypass Switching	Switchless Activation, Buffered bypass
Power Source	9V DC power supply (sold separately)
Batteries	1 x 9V
Height	2.75"
Width	5.88"
Depth	9.13"

RETURN INFORMATION

We want you to be completely happy with your purchase from Sweetwater. If you are not satisfied with your product, you may return it for a refund of the purchase price within 30 days. If your purchase was eligible for Free Shipping, the shipping cost will be deducted from your credit or refund. Returns must be in the complete and original packaging with all accessories and complete documentation (Owner's Manual, warranty card, quick start guides, etc.), show no signs of wear or use, and include a Return Authorization number or be subject to a restocking fee.