Boss PH-3 Phase Shifter
Boss PH-3 Phase Shifter

PH-3 Phase Shifter, Phaser for Guitar from Boss.

All user reviews for the Boss PH-3 Phase Shifter

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Average Score:4.1( 4.1/5 based on 9 reviews )
 1 user review11 %
 7 reviews78 %
 1 user review11 %
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ericthegreat's review"cool color and sound"

Boss PH-3 Phase Shifter
The Boss PH-3 Phase Shifter is a phase shifter in the form of a guitar stomp box. It is an analog pedal and has a 1/4 inch input and output for your amp and your instrument. It is also built well and should be functional for a long time if treat it right. It is not rackable as it is a pedal.


The setup and general configuration of the pedal is extremely simple to follow. It is also really easy to get a great sound from this. It has a knob to control the rate of the phaser and has a switch to change the color. I don't have a manual for, but controlling and set up this pedal couldn't be easier.


While this isn't the most versatile phaser on the market, the simple phase shifting tone it produces is quite warm and is rich overall. I have only used this with guitar, but have heard of others using it with electric keyboards with great success. By varying the rate, you can get a few different phaser flavors and the tone color switch is also helpful when trying to vary your tone.


Overall, I have found the Boss PH-3 phase shifter to be incredibly useful over the four years that I have been using it. Not only is it built extremely tough and looks great, it is a great sounding pedal that is as easy to use as they come. Its more versatile then its competitors by far. The price isn't too expensive and I have grown to love the unique and rich sounding pedals that Boss makes. If you are in the market for a phaser, this is definitely worth a try. Look around online for these, for some reason people are selling them pretty cheap, that’s their loss. Because this is a great pedal at a great price and it will last you along time.

iamqman's review"Cool green machine"

Boss PH-3 Phase Shifter
This is first phaser top boss pedal that doesn't feature in analog base to circuit. This is all digital circuit design that is very different in design and sound from its previous models. This phaser has a four 8, 10, and 12 stage phaser that is very different from the previous models which gives it a little bit more versatility in town. You also have a three new modes called the fall, rise, and the step. The rise and fall creates a misdirection phasing sound which kind it is uncontrollable at times. The step mode gives a set of filter modifications that allows to add some envelopes filtering modulation in the circuit tone. This gives it a unique style of phasing and you wouldn't hear on many phasers that preceded this one.


Compact pedal with vintage BOSS phasing effects.
"Rise" and "Fall" effects for unidirectional phasing sounds.
Includes classic 4-, 8-, 10-, and 12-stage phasers.
Realtime control of rate via Expression Pedal input.
Tap tempo sync of phasing effects.



Controls: Pedal switch, RATE knob, DEPTH knob, RES knob, STAGE switch (4, 8, 10, 12, FALL, RISE, STEP)
Connectors: Input, Output, EXP/CTL, AC Adaptor
Current Draw: 45 mA (DC 9V)
Weight: 420 g (15 oz.)
Nominal Input Level: -20dBm
Input Impedance: 1Mohm
Nominal Output Level: -20dBm
Output Impedance: 1kohm
Residual Noise Level: -92 dBu (IHF-A, Typ.)
Recommended Load Impedance: 10kOhm or greater
Recommended AC Adaptor: PSA Series


The tone of this pedal is very unique in its design but very unique and sound it gets the classic phaser tones but also has its own phasing situation going on if you need a pedal that will give you some of the most obscure and crazy sounding phasers other than the ADA pedal. this would be it.

This effect will sound good in any application you you can find. It will take some time figuring out what your perfect phasing situation is for this pedal. So this isn't exactly a plug-and-play pedal even though you can get a good sound by simply just plugging it in and having the controls where they lie. The stage mode control knob is where you get into some crazy facing situations. It can give you hours of creativity or can cloud up some of your own guitar playing skills.


These petals come in new right at around $130 which isn't that bad of a price for a cool and unique sounding phaser pedal I would recommend this pedal to someone who wants something little bit more versatile in a little bit more crazy sounding in their freezer units.

moosers's review

Boss PH-3 Phase Shifter
The Boss PH-3 Phase Shifter is a compact phaser designed for use with guitar, but suitable with any electronic instruments. All pedals designed for guitar will be compatible with other electronic instruments, but some don't translate very well at all. This one definitely will! I've used it primarily for guitar, but have also use it on keyboards as well. The pedal has standard characteristics for a Boss pedal, with 1/4" jacks for your output and input and power coming from either a nine volt power supply or battery. You can't rack this pedal up as it's a foot controlled pedal.


The configuration of the Boss PH-3 Phase Shifter makes it quite easy to operate. Like most Boss pedals, it sticks with the four knob set up, giving you parameters for rate, depth, resonance, and stage, with seven different stages to choose from, which really adds to the amount of different sounds possible here. It should be easy enough to handle where a manual isn't necessary.


I love how many different types of phasing sounds you can get with the Boss PH-3 Phase Shifter. While it's not a master of any one sort of particular phasing sound, it gives you enough options to choose from to make up for this. It's not to say that many of the stage modes on here aren't top notch, it just goes with flexibility over anything else. I love using the pedal for subtle phasing sounds more than anything, but it's also capable of getting a wide array of more wild and spaced out sounds.


If you're looking for some bang for your buck in terms of versatility in a phaser pedal, look no further than the Boss PH-3 Phase Shifter. It's not expensive at all considering the plethora of options available to you here and is perfect for any guitarists rig. I've used a number of other phaser pedals out there, and while this isn't the best one in terms of pure sound quality, it's going to give you the most options, so unless you're looking for a really specific phaser sound, the PH-3 is more times than not going to be the way to go...

soccerplayer25's review

Boss PH-3 Phase Shifter
The Boss PH-3 is a multi step phaser with a ton of versatility. It is an analog pedal and has a 1/4'' input and output. It is a traditional stomp box and is not rackable.


Like most Boss pedals, this couldn't be easier to use. From the minute I plugged in my guitar I was able to get some really cool phasing sounds - ranging from a nice light phase to some crazy sounds that are reminiscent of aliens. I haven't looked at the manual because I bought it used, but I never thought I would need it.


The phasing sounds on this pedal are some of the best I have heard. I use it with electric guitars and keyboards. The sounds are thick and convincing - I enjoy the step phase mode the best, but I have used all of the modes. The effects are definitely pretty spacey, but if you are looking for a phaser, this is one of the best of its kind.


I've had this pedal for about 4 years and the thing I like most about it is its ability to create some pretty nutty sounds. Like all Boss pedals, its built great and the price is very reasonable. I never checked out any other phaser pedals because this one caught my ear first and I haven't needed to look into any others. The Boss PH-3 continues to be a major part of my guitar rig.

MGR/jon's review"Boss Phase Shifter"

Boss PH-3 Phase Shifter
paid about $120 new from local Guitar Center

can tap tempo in (dont have to spend time finding the perfect spot for the rate control to be to synth with a certain tempo); many different modes and possibilities for phasing

the unit itself is great but i dont need the phase shifting effect much...get a good delay pedal or something before getting this

typical boss construction; high-quality

this is a great pedal, just be sure that you want the effect

This review was originally published on

MGR/wildcat's review"Boss PH-3 Phase Shifter"

Boss PH-3 Phase Shifter
From a local guitar shop; effect was brand new($109).

Me being into extreme sounds at this point in my guitar career, this effect was a jaw-dropper. It allows you to emulate sounds as though you were underwater and breathing bubbles,in space,or jumping around a level of Super Mario. All of this, AND is an actual phaser pedal. 2 in 1 I guess you could say.

To be honest, it was sort of an impulse buy and I don't use it as much as i used to. But you're not me so whether I USE it or not is irrelevant. Also, if the effect you have on is very deep or extreme, when switching the pedal off you'll get that little unnatural switching noise...the one where everyone can hear that you just hit a switch.

It's a BOSS...self explanatory. But just in case you aren't familiar with BOSS, the thing is indestructable. You're good for like...50 years I'd say.

It's a fantastic overall effect, just decide whether you'll use it to it's potential before purchasing it.

This review was originally published on

benderleben's review (This content has been automatically translated from French)" not bad"

Boss PH-3 Phase Shifter
phaser (digital) and not true bypass extremely versatile
expression pedal that control the rate


very simple on the desired sound quickly GET TIRED


emulation ranging from stage 90 until very modern with the duties "rise" and "fall" that make beautiful bubble
the sound is not so bad even if the analog grain it sorely.
the most annoying problem I find he eats a little sound, volume down a bit (like all the other phasers stage 90 it increases the volume too much for my taste)


a good pedal without doubt the best value versatility / market price,
yes with the same budget I do it again the same choice.

Slowhand's review (This content has been automatically translated from French)" FRO"

Boss PH-3 Phase Shifter
Boss effects pedal format standard.

4 knobs:
- Rate;
- Depth;
- Res;
- Stage.

2 inputs:
- INPUT: Instrument
- EXP / CTL: expression pedal (or control)

1 output:
- OUTPUT: amp or another (the output).

Powered by battery or power supply 'type Boss (9VDC center negative).

It is not true-bypass.


Everything is simple and intuitive, no need for a manual.

Selector "Stage" to determine types of phases.

"Rate" the rate of phasing. "Depth" depth. "Res" color.


I've never been a big fan of Boss pedals that I find too cold and metallic.

This is no exception to the rule. I found her cold and not very persuasive.


The quality / price Boss pedals is usually right. Nevertheless, I think for the same price range there are phasers much more interesting and more friendly.

I do not do it again this election.

christofair's review (This content has been automatically translated from French)

Boss PH-3 Phase Shifter
The pedals offer several types of phaser in the same box, as if we had several phases DIFFERENT available. Intensive 9v batteries, it is essential for use with external power supply to avoid a crash STRID a full live.
Knobs and footswitch solid at Boss. Between a control / Expression pedals!


Operation is simple, SETTING THE its easy, but the footswitch does have a dual purpose for me ESG, especially in concert.
First empty feature: ON / OFF. 2nd function: keeping the footswitch down about 2 seconds, the function accde tap-tempo, super convenient (certainly), but not really practical if you get the chance (like "oops I stayed foot on it too long ").
Simply press again above 2 sec to return to normal, but the problem is often such incidents.
Trs parcontre the pedals is versatile: nickel on a guitar, but on top of keyboards / synths, or effects loop, even to mix something ... a voice like psych. Big bonus: the game live with expression pedals, one varies the intensity of phasing the foot is standard.


I put 10 out of 10 for the sound: the pedals a little CHRE justifies its price when discovering the sound, and the phasing DIFFERENT types on offer. Like having a choice of phaser pedals, phasers or more in the bank of a good multi effects. It is lightweight and discreet phaser of the nightmare hippie: excellent! Mode "step" is incredible: a kind of on the heights arpegiattor frequency drives (not rated) that can provide a cot a synth guitar.


Trs good phaser in short, there is the tap tempo that does not suit me. But for one who wants to color a scratch solo or an intro, it's top. Need a phaser for something else, but no rack at hand, the PH-3 dpanne well. Ideal for live, it is solid and sound. I have another phaser (small stone) but otherwise I took two PH-3 rgls diffrent ... what do bcp zicos.