This is:  the world's first Barber Pole Through-Zero Flanger.

So what is a " barber pole through-zero flanger?"
Well, essentially, the Shepard's End is a flanger, but its unlike any flanger you've ever heard, played or experienced.  While the term "Barber Pole" sounds neat-o-speed-o, what it really means is that this flanger does not have a beginning, or an end to its cycle.  WHAT?!

You know how most flangers go up, then back down?  Well, this one doesn't do that.  Nope.  It goes up, continually.  It goes down, continually.  It can even go through the zero-point (that amazing over the top wooshing sound you hear on so many records), continually.  This just depends on how you set the controls.  And they're pretty easy to use.

Demo by Silver Burst

Official Product Video

Review by Talk Bass.com

Review by Stompbox Steals

Review by The Gear Page

Review by reddit /guitarpedals

Manual

Product Page

Shepard's End Sub Zero

While the JDS-50’s sleek and un-assuming looks may insinuate that you’ve got a standard overdrive pedal before you, the JDS-50 really isn’t quite like any other overdrive out there.

From its perfectly balanced frequency spread, to the ridiculous dynamic response held within, the JDS-50 is not only an indispensable pedal-board staple, but a highly expressive instrument unto itself.

Effortlessly delivering tones ranging from meticulously tuned, touch-responsive crunch, to thick harmonic-laden overdrive and even to near-full distortion, the JDS-50 not only sounds phenomenal, but responds and feels like a high-quality tube amplifier, all while retaining the unique signature tonal characteristics of your guitar, or bass.

Demo by Living Room GD

Demo by 60 Cycle Hum

JDS-50 Overdrive

FwonkBeta has that fonk that'll have you telling everyone in the room you swear you changed your socks this morning.

But its that Purple. Purple funk.
Get up for the DownStroke.

This Envelope/Low-Pass filter is funkier than nine pounds of shaving powder, and with the Fwonk control up high, it is anything but subtle or mellow.

Serious low-end thump when desired, the FwonkBeta will probably knock down anything hanging on the wall, and maybe even push around free standing furniture. It is just that off the chain.

Demo by Get Offset

Demo by Pertybass

Review by Basschat

FwonkBeta

So what is a " barber pole through-zero flanger?"
Well, essentially, the Shepard's End is a flanger, but its unlike any flanger you've ever heard, played or experienced.  While the term "Barber Pole" sounds neat-o-speed-o, what it really means is that this flanger does not have a beginning, or an end to its cycle.  WHAT?!

You know how most flangers go up, then back down?  Well, this one doesn't do that.  Nope.  It goes up, continually.  It goes down, continually.  It can even go through the zero-point (that amazing over the top wooshing sound you hear on so many records), continually.  This just depends on how you set the controls.  And they're pretty easy to use.

Demo by collector//emitter

Review by Marshall Forum

Shepard's End

At minimum setting, Decline is completely removed from the circuit and you are given control of a powerful and lush reverb engine, capable of 100%-wet mixes, and a LONG tail (if desired). A gradual increase in Decline begins a gentle sonic descent into a subterranean realm... and while the fall can be quick or slow, the decent is extensive.
As Decline settings increase, the reverb tails appear to "slow down" as they stretch and bend within the time domain, burrowing into a deep and luscious sonic pad, which continues to descend further while creating space above for fresh, incoming sounds.