P45 Phaser

Clone of the Phase 45 with some extra tweaks and features.

Though a lot less in-your-face than the 4-stage Phase 90, this is far from a weak effect. Pleasant swirls abound. You won't get full-on psychedelic madness but there's plenty of swooshy phase going on.

The board has a few extras over the standard one-knob pedal (though sweet and simple is the favoured configuration at FuzzDog HQ), drawn up by JC Maillet back in 2003:

  • Optional Mix control to vary the sound between phase and a kind of pitch-shifting vibrato
  • Pseudo Univibe mode switch. No, it isn't a univibe but it has a similar.... vibe!
  • Optional external pot for the bias control, rather than an internal trimmer. Why? well, you may want to tweak it slightly when selecting between Phase and Vibe modes. Up to you.

Kit includes the all-important matched FETs.

Designed for board-mounted vertical-pin pots which have round shafts - take that into account when ordering knobs. You can wire up 'normal' pots if you prefer - those will have splined shafts. The Univibe mode switch is also board mounted.

The box layout images shown indicate the position of the different controls but don't show all the different combinations available. Box will be drilled to match your chosen options.

Note: the flashing bypass indicator LED mod is not compatible with the OptoPuss bypass system.

Partial kit: PCB, all board-mounted components, pots.

Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.

Enclosure (pre-drilled) is only available with full kits, and will not take a battery. Knobs are not included.

Difficulty: Medium-Hard

PCB size: 50 x 46mm

Knobs required: 1, 2 or 3

Enclosure: 1590B

Direct Connect compatible (4 way)


Here's the previous version


Pedal Parts



£31.20 inc. tax

£26.00 ex. tax
? Tax based on United Kingdom.

Customer Reviews

5 review(s) posted (write review)
Excellent Phaser 5 product stars
"Ordered this as a build for a friend, kinda wish I had made one for myself now! Once I dialed in the bias I picked my guitar up and didn't put it down until 3 hours later! Sent it to my friend as a birthday gift and he immediately went into Nirvana mode, playing every song he could think of. This pedal certainly has some soul in it, and the build itself isn't too hard! Will certainly be recommending this one!" Chase Slagle - 15/09/2018
Beautiful sounds 5 product stars
"Delivery of this quality kit was really speedy, and it went together without any issues. The sounds available on this are stunning - everything from slow sweeps to fast wobbles, but all the time remaining less intrusive than other phasers. The mix knob gives some useful variations, and the vibe switch is subtle but handy. As someone else said, it's great combined with a tremolo to give more interesting sounds, and I really like it in front of my dirt pedals. I continue to be amazed at what FuzzDog offers, and can't wait to build more!" Tom - 28/03/2017
Great kit 5 product stars
"Great sounding easy to build kit. Did all the options and it sounds fab. Subtle phase, univibishness and vibrato possible, also by pushing the bias beyond audible wobble there's just an enhancement effect that adds to the tone. Used in sync with one of the tremolo kits can get you close to harmonic tremolo sound. Great stuff!" Jonny D - 07/11/2015
Bloody brilliant 5 product stars
"Having made a few of the Fuzz Dog's kits now, my expectations are pretty high, this kit is typically brilliant. I went for all the mods (external bias, mix and univibe switch) - in univibe with the right tweaking of the mix and bias pots you can get a really, really lovely sounding vibrato too - it's quite subtle but sounds sweet. As for the phaser sound itself, well to my ears it sounds as good as the original with the added bonus of proper bypass AND blinking LED to show the rate." Ben - 16/07/2014
Kewl.... 5 product stars
"For all my Phasey-Univiby goodness, I chose this kit. It wobbles nicely in the Univibe mode (which is primarily what I'll use it for). A tonally great pedal with a nice effect. Praise be unto the Pood. :)" Rob - 23/01/2013

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Full kits DO NOT include enclosures unless you select them in the 'Kit Type' drop-down menu.

Don't forget to download the appropriate daughterboard build document for your kit:
Standard 3PDT