PastFx is an Australian guitar effects pedal company based in Brisbane, built around the stated mission of bringing back classic effects that have become scarce, discontinued, or prohibitively expensive on the used market. Drawing on vintage circuit designs, the brand produces faithful recreations and inspired takes on sought-after pedals, occupying a niche for players chasing tones that have become difficult to source.

The brand's flagship series, the Spectrum Collection, is dedicated to tones associated with Pink Floyd guitarist David Gilmour. When Buffalo FX — a company operated by Steve Painter that produced Gilmour-inspired pedals — folded in 2020, PastFx stepped in to offer recreations of those designs. The Spectrum Collection includes the BLD (a take on Gilmour's booster, line driver, and distortion combination), the TD-Y Overdrive, Revolution Distortion, and Canberra Overdrive, all drawing from the modified and custom effects associated with Gilmour's signature tone.

Beyond the Spectrum Collection, PastFx offers a broader catalog of vintage-inspired effects. The Chorus Ensemble Mini and Chorus Ensemble Deluxe are based on the classic Boss CE-1; the Echoflanger recreates the vintage Electro-Harmonix Echoflanger; and the lineup extends to the Patriarch Fuzz, the Nick James Foot Phaser, the Hot for Flanger, and the Echo 600 analog delay. The company ships internationally and sells direct through their website as well as through major resale platforms.

PastFx has 17 products cataloged on Equipboard, including Chorus Effects Pedals, Overdrive Effects Pedals, and Flanger Effects Pedals. Their gear is featured by 4 artists, with the strongest followings in Rock and Blues. Notable users include Dave Simpson, Jack Bates, and Leon Todd.