Filter pedal TWA Mk. III Triskelion Harmonic Energizer Review Evolving from the Systech Harmonic Energizer as used by Frank Zappa, this parametric midrange filter boasts adjustable peak control and obscene amounts of gain. Electro-Harmonix Unveils the Nano Q-Tron Envelope Filter The new envelope follower that’s small enough to fit through your letterbox. Mojo Hand FX Debuts New Little Wonder Filter Pedal A smaller version of the company's Wonder Filter, this stompbox takes after the legendary Mu-Tron '70s filter. Get The Pick NewsletterAll the latest guitar news, interviews, lessons, reviews, deals and more, direct to your inbox!Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors MOST READ1Martin and Reverb unite for an exclusive non-cutaway Grand Performance acoustic2Matteo Mancuso pays homage to his hero, Paul Gilbert, with new track, Paul Position 3Joe Satriani’s custom Eddie Van Halen-flavored 3rd Power amp is now available as a plugin – with real amps on the way 4David Gilmour explains his preference for vintage guitars, and demos his 1945 Martin D-185Tributes pour in for “champion of the blues” John Mayall