MXR Phase 90 -- ADVANCED
By no means am I suggesting that the simple 2 stage MXR Phase 45 can get all the deep complex tones of a Uni-Vibe but it can do something which sounds great and similar in character. For example the 'Lovepedal Magicboy Vibe' and many other 'small box' 'Vibes are based around the Phase 45 circuit. Google 'mxr phase 90 schematic' and watch the results pile up. Name just about any major pedal-effect from the 60's/70's up to (and sometimes including) current production, and somebody's taken the time to trace it out, schematize it and post it to stompbox-focused forums, blogs and websites.
- From looking at the schematic there’s no gain stage that can quickly and easily be upped, but what you could do is add an extra opamp or transistor stage at the end with moderate/adjustable gain. Another possibility is to experiment with the gain in the phaser stages (like slightly increasing R3, R8, R13 and R20), but that might also end up.
- Hello everyone, and I would appreciate if you could help me with a diagram that I am looking for from the MXR Phaser 90 EVH version limited edition, the pedal had a burnt diode, I replaced it and now it turns on but in bypass mode it sounds normal when I turn on the pedal it sounds with Very low volume and does not effect phaser.
Description
Phase Shifter, JFET based
Status
VERIFIED
Layouts
tonepad_phase90.pdf 115.2 KB-- Pez 90, Rev.6.Sep.30.2007
Order Printed Circuit Boards
MXR Phase 90 US$ 11.00
Comments
A great-sounding phase shifter used by the likes of Eddie Van Halen ('Unchained') and many others.
You must use matched FETs for the circuit to work. The value of the zener diode depends on the FETs you use. Use sockets for these parts.
Possible mods: 'The resistor you pull to get rid of the feedback (and change the sweep) is the red 22k at the top of the schematic. The resistor to change the level is the 150k which connects between the collector and base of the PNP transistor: 120k to reduce gain, 180k to increase it.' Rob Strand
For offboard wiring instructions check the offboard wiring project page.
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Mxr Phase 90 Block Logo Schematic
Related ProjectsMore Phaser projects:
| MXR Phase 90 | Small Stone Phaser | MXR Phase 45 | Ross Phaser |
More ADVANCED level projects:
| MXR Envelope Filter | MXR Phase 90 | Small Clone Chorus | Small Stone Phaser | Sans Amp GT-2 |
| Ross Phaser | Flanger 301 | FSH1 | Boss CE-2 | Reverb digital |
Well, more like over 200 so far, and hopefully we’ll find more to add to the list of effect pedal clones. I started looking into this after doing some makeovers to a couple of Joyo pedals I had. The ones I’ve included here are those that are readily available off eBay. There will also be some that are no longer in production, but you’ll often see them in second-hand stores as a bargain pickup! I should also add that the guys at Spartan Music in the UK did a great job as a starting point for my list. I’m sure I’ve missed a bunch so please don’t hesitate to leave comments.
Now I should add a bit the term “clone”. Some of these pedals really are true clones – a direct copy. But for some it’s more that the manufacturer was intending to replicate the original design in a general sense. There are threads in forums all over the web about how closely a pedal performs in relation to the original. I’d suggest using this database as a starting point for your own research before you buy. Remember too that there are a bunch of factors (guitar, amp, playing style, other effects etc) that will determine the sound you get from a pedal. In some cases a “clone” may deliver what you want better than the original. Lots of caveats I know, but just wanted to get it out there.
I’m particularly a fan of basic analogue effect pedal clones – simple circuits that for the most part are well known. In the end, it comes down to the quality of components and the quality of the build. That’s where I’d again recommend doing some google/forum research before you purchase. Then again, at the price some of these are at it’s not the most expensive mistake you’ll make. Remember too that they are rarely if ever exactly the same as the original – they are “based” on the original. In some cases you may even prefer what they’ve done.
Of course, there will always be some debate about whether one should support the effect pedal clones manufacturers. I’ll leave that for your own choice, but my pedalboards contain more boutique pedals than clones, and sometimes it’s a cheap clone that has led me to eventually purchase “the real thing”. In fact, I’ve often wondered why some of the boutique companies don’t release their own clones. Using the very factories in China that are making the ones they see as competitors, they could have their own. A bit like the Squier/Fender situation.
Oh, and at the other end of the scale, you might find this interesting: a list of 20 of the most expensive effects and the sounds they make!
Anyway, here’s the list – you can sort the list by either the original or the clone too. I hope it proves useful in your search for new effects to try!
UPDATE
14/12/17: I’ve just started adding the TC Electronic’s line of cheaper pedals. From what I can establish, these are based on the Behringer pedals that are clones of the Boss pedals! Yep, cloning clones – but it does make sense given Behringer own TC Electronic. I’m still missing a few of them but will add them when I find out – or when someone tells me in the comments below!
Mxr Phase 90 Script Schematic
| Clone | Original |
|---|---|
| Biyang AD-10 Delay | Boss DM-3 Analogue Delay |
| Biyang BL-8 Blue | Boss BD-2 Blues Driver |
| Biyang CH-10 Chorus | Boss CE-2 Chorus |
| Biyang CO-10 | MXR Dyna Comp |
| Biyang DS-8 Mouse | Pro Co RAT |
| Biyang EQ-7 | Boss EQ-7 |
| Biyang FZ-10 Fuzz Star | Electro-Harmonix Big Muff |
| Biyang OD-10 Mad Driver | Ibanez Tube Screamer |
| Biyang OD-8 X Drive | Ibanez Tube Screamer |
| Biyang PH-10 Phaser | MXR Phase 90 |
| Caline Blue Ocean | Mad Professor Deep Blue |
| Caline Pure Sky Overdrive | Timmy |
| Caline CP-43 Pegasus | Klon Centaur |
| Caline Crazy Cacti | Fulltone Fulldrive 2 |
| Caline Englishman | Carl Martin Plexitone |
| Caline Hot Mushroom | MXR Dyna Comp |
| Caline Orange Burst | Xotic BB Preamp |
| Caline Rockface | Wampler Plexidrive |
| Caline Sand Storm | MI Audio Crunch Box |
| Caline White Heat | DOD Overdrive Preamp 250 |
| Daphon E20CH | Boss CE-2 Chorus |
| Daphon E20DL | Boss DM-3 Analogue Delay |
| Daphon E20DS | Boss DS-1 Distortion |
| Daphon E20FL | Boss BF-2 Flanger |
| Daphon E20GE | Boss EQ-7 |
| Donner Blues Drive | Ibanez TS-9 |
| Donner Boost Killer | Xotic RC Booster |
| Donner Giant Metal | Electro-Harmonix Metal Muff |
| Donner Jet Convolution | Electro-Harmonix Electric Mistress |
| Donner Morpher | Suhr Riot |
| Donner Pearl Tremor | MXR Phase 90 |
| Donner Stylish Fuzz | Electro-Harmonix Triangle Big Muff Pi |
| Donner Tutti Love | Boss CE-2 Chorus |
| ENO AD6 Delay | Boss DM-3 Analogue Delay |
| ENO AE-1 Ambient Echo | Boss DM-2 Delay |
| ENO BF-2 Flanger | Boss BF-2 Flanger |
| ENO BMF | Electro-Harmonix Big Muff |
| ENO CH-2 | Boss CH-1 Chorus |
| ENO Classic DS-1 | MI Audio Crunch Box |
| ENO ES9 | Ibanez Tube Screamer |
| ENO Metalistik DM-3 | Electro-Harmonix Metal Muff |
| ENO Myomorpha DR-1S | Pro Co RAT |
| ENO OCT-1 Octaver | Boss OC-2 Octave |
| ENO OD-9 | Ibanez TS-9 |
| ENO Trinity | Boss DS-1 Distortion |
| ENO Trouble DSO-2 | Fulltone OCD |
| Joyo JDI-01 DI Box | H&K Red Box Classic |
| Joyo JF-01 Vintage Overdrive | Ibanez TS-808 |
| Joyo JF-02 Ultimate Overdrive | Fulltone OCD |
| Joyo JF-03 Crunch Distortion | MI Audio Crunch Box |
| Joyo JF-04 High Gain Distortion | Marshall Shredmaster |
| Joyo JF-05 Classic Chorus | Ibanez CS-9 |
| Joyo JF-06 Vintage Phase | MXR Phase 90 |
| Joyo JF-07 Classic Flanger | Ibanez FL-9 Flanger |
| Joyo JF-08 Delay | Boss DD-2 Delay |
| Joyo JF-09 Tremolo | Diaz Tremodillo |
| Joyo JF-10 Dynamic Compressor | MXR Dyna Comp |
| Joyo JF-11 6 Band EQ | MXR 6 Band EQ |
| Joyo JF-12 Voodoo Octave | Fulltone Ultimate Octave |
| Joyo JF-13 AC Tone | Tech 21 SansAmp Character Liverpool |
| Joyo JF-14 American Sound | Tech 21 SansAmp Character Blonde |
| Joyo JF-15 California Sound | Tech 21 SansAmp Character California |
| Joyo JF-16 British Sound | Tech 21 SansAmp Character British |
| Joyo JF-17 Extreme Metal | Electro-Harmonix Metal Muff |
| Joyo JF-30 A/B Switch | Fender Micro ABY |
| Joyo JF-32 Hot Plexi Drive | Carl Martin Plexitone |
| Joyo JF-34 US Dream | Suhr Riot |
| Joyo JF-35 Pocket Metal | Electro-Harmonix Pocket Metal Muff |
| Joyo JF-36 Sweet Baby | Mad Professor Sweet Honey |
| Joyo JF-37 Analog Chorus | Boss CE-2 Chorus |
| Joyo JF-38 Roll Boost | Xotic RC Booster |
| Little Bear BS1 Fuzz | Zvex Woolly Mammoth |
| Little Bear RA.TTACK RT-2 | Pro Co RAT |
| Moen Fuzz Moo | Electro-Harmonix Rams Head |
| Moen Shaky Jimi | Dunlop Uni-Vibe |
| Mooer 90 | MXR Phase 90 |
| Mooer ABY | Electro-Harmonix Switchblade |
| Mooer Acoustikar | Boss AC-2 |
| Mooer AnaEcho | Boss DM-2 Analogue Delay |
| Mooer Black Secret | Pro Co RAT |
| Mooer Blade | Electro-Harmonix Metal Muff |
| Mooer Blue Comp | Boss CS-2 Compressor |
| Mooer Blue Faze | Jim Dunlop Fuzz Face |
| Mooer Blues Crab | Marshall Blues Breaker |
| Mooer Blues Mood | Boss BD-2 Blues Driver |
| Mooer Cruncher | MI Audio Crunch Box |
| Mooer Echolizer | Maxon AD999 |
| Mooer Eleclady | Electro-Harmonix Electric Mistress |
| Mooer Ensemble King | Boss CE-2 Chorus |
| Mooer Flex Boost | Xotic AC Booster |
| Mooer Funky Monkey | Boss AW-2 |
| Mooer Green Mile | Ibanez Tube Screamer |
| Mooer Grey Faze | Arbiter Fuzz Face |
| Mooer Hustle Drive | Fulltone OCD |
| Mooer Ninety Orange | MXR Phase 90 |
| Mooer Pitch Box | Boss PS-5 |
| Mooer Pure Boost | Xotic RC Booster |
| Mooer Pure Octave | Boss OC-3 Octave |
| Mooer ReEcho | Boss DD-2 Delay |
| Mooer Solo | Suhr Riot |
| Mooer Sweeper | Electro-Harmonix Bassballs |
| Mooer Trelicopter | Demeter Tremulator |
| Mooer Triangle Buff | Electro-Harmonix Triangle Muff |
| Mooer Ultra Drive | Boss DS-1 Distortion |
| Behringer AB100 Guitar/Amp Selector | Nobels AB1 Active A/B Selector Pedal |
| Behringer ADI21 V-Tone Acoustic Driver | Tech21 Sansamp Acoustic D.I. |
| Behringer AM100/AM300 Acoustic Modeller | Boss AC-2 Acoustic Simulator |
| Behringer AM400 Ultra Acoustic Modeller | Boss AC-3 Acoustic Simulator |
| Behringer BCH100/BUC400 Ultra Bass Chorus | Boss CEB-3 Bass Chorus |
| Behringer BDI21 V-Tone Bass Driver | Tech21 Sansamp Bass D.I. |
| Behringer BEQ700 Bass Graphic Equalizer | Boss GEB-7 Bass Equalizer |
| Behringer BLE100/BLE400 Bass Limiter Enhancer | Boss LMB-3 Bass Limiter Enhancer |
| Behringer BO100/BO300 Blues Overdrive | Boss BD-2 Blues Driver |
| Behringer BOD100/BOD400 Bass Overdrive | Boss ODB-3 Bass OverDrive |
| Behringer BSY600 Bass Synthesizer | Boss SYB-5 Bass Synthesizer |
| Behringer BUF300 Ultra Bass Flanger | Boss BF-2B Bass Flanger |
| Behringer CC300 Chorus Space-C | Boss DC-2 Dimension Chorus |
| Behringer CD400 Chorus Space-D | Boss DC-3 Digital Dimension |
| Behringer CL9 Compressor/Limiter | Ibanez CP 9 Compressor/Limiter |
| Behringer CO600 Chorus Orchestra | Boss CE-5 Chorus Ensemble |
| Behringer CS100/CS400 Compressor Sustainer | Boss CS-3 Compression Sustainer |
| Behringer DC9 Dynamic Compressor | MXR M-102 MXR dyna comp |
| Behringer DD100/DD400 Digital Delay | Boss DD-3 Digital Delay |
| Behringer DD600 Digital Delay | Boss DD-5 Digital Delay |
| Behringer DM100 Distortion Modeller | Boss DS-1 Distortion |
| Behringer DR100/DR600 Digital Reverb | Boss RV-5 Digital Reverb |
| Behringer DR400 Digital Reverb/Delay | Boss RV-3 Digital Reverb/Delay |
| Behringer DW400 Dynamic Wah/Human Voice | Boss AW-3 Dynamic Wah |
| Behringer EM600 Echo Machine | LINE 6 Echo Park |
| Behringer EQ700 Guitar Graphic Equalizer | Boss GE-7 Guitar Equalizer |
| Behringer FD300 Ultra Feedback/Distortion | Boss DF-2 SUPER Feedbacker & Distortion |
| Behringer FL600 Flanger Machine | LINE 6 Liqua-Flange |
| Behringer FM600 Filter Machine | LINE 6 Otto Filter |
| Behringer GDI21 V-Tone Guitar Driver | Tech21 GT2 Sansamp |
| Behringer HB01 Hellbabe | Jim Dunlop Crybaby From Hell |
| Behringer HD300 Heavy Distortion | Boss MD-2 Mega Distortion |
| Behringer HF300 Hi Band Flanger | Boss HF-2 Hi Band Flanger |
| Behringer HM300 Heavy Metal | Boss HM-2 Heavy Metal |
| Behringer IG9 Intelligate | MXR M-135 Smart Gate |
| Behringer NR100/NR300 Noise Reducer | Boss NS-2 Noise Suppressor |
| Behringer OD100/OD300 Overdrive Distortion | Boss OS-2 OverDrive/Distortion |
| Behringer OD400 Overdrive | Boss OD-3 OverDrive |
| Behringer PB100 Preamp Booster | Nobels PRE1 Preamp Booster Pedal |
| Behringer PH9 Phaser | MXR EVH Phase 90 |
| Behringer PO300 Power Overdrive | Boss PW-2 Power Driver |
| Behringer RM600 Rotary Machine | LINE 6 Roto Machine |
| Behringer RV600 Reverb Machine | LINE 6 Verbzilla |
| Behringer SE200 Spectrum Enhancer | Boss SP-1 Spectrum |
| Behringer SF300 Super Fuzz | Boss FZ-2 Hyper Fuzz |
| Behringer SF400 Super Flanger | Boss BF-3 Flanger |
| Behringer SM200 Slow Motion | Boss SG-1 Slow Gear |
| Behringer SM400 Super Metal | Boss HM-3 HYPER Metal |
| Behringer SO400 Super Octaver | Boss OC-3 Super Octave |
| Behringer SP400 Super Phase Shifter | Boss PH-3 Phase Shifter |
| Behringer TM300 Tube Amp Modeler | Tech21 GT2 Sansamp |
| Behringer TO100 Tube Overdrive | Ibanez TS9 Tube Screamer |
| Behringer TO800 Vintage Tube Overdrive | Ibanez TS808 Vintage Tube Screamer |
| Behringer TP300 Ultra Tremolo/Pan | Boss PN-2 Tremolo/Pan |
| Behringer TU100/TU300 Chromatic Tuner | Boss TU-2 Chromatic Tuner |
| Behringer UC100/UC200 Ultra Chorus | Boss CH-1 Super Chorus |
| Behringer UD100 / UD300 Ultra Distortion | Boss DS-2 Turbo Distortion |
| Behringer UF100/UF300 Ultra Flanger | Boss BF-2 Flanger |
| Behringer UM100/UM300 Ultra Metal | Boss MT-2 Metal Zone |
| Behringer UO100/UO300 Ultra Octaver | Boss OC-2 Octave |
| Behringer UP100/UP300 Ultra Phase Shifter | Boss PH-2 Super Phaser |
| Behringer US600 Ultra Shifter/Harmonist | Boss PS-5 Super Shifter |
| Behringer UT100 / UT300 Ultra Tremolo | Boss TR-2 Tremolo |
| Behringer UV300 Ultra Vibrato | Boss VB-2 Vibrato |
| Behringer UW300 Ultra Wah | Boss AW-2 Auto Wah |
| Behringer UZ400 Ultra Fuzz | Boss FZ-3 Fuzz |
| Behringer VB1 Vintage Bass | Electro-Harmonix Bassballs |
| Behringer VD1 Vintage Distortion | Electro-Harmonix Big Muff |
| Behringer VD400 Vintage Delay | Boss DM-3 Delay |
| Behringer VM1 Vintage Time Machine | Electro-Harmonix Deluxe Memory Man |
| Behringer VP1 Vintage Phaser | Electro-Harmonix Small Stone Phase Shifter |
| Behringer VT911 Vintage Tube Overdrive | Chandler/B.K. Butler 910/911 Tube Driver |
| Behringer VT999 Vintage Tube Monster | Ibanez TK999 Tube King |
| Behringer WD300 Warp Distortion | Hughes & Kettner Warp Factor Distortion |
| Behringer XD300 Distortion-X | Boss XT-2 Xtortion |
| Danelectro Cool Cat Trem | Demeter Tremulator |
| Danelectro Transparent OD v.1 | Timmy |
| Danelectro Daddy-O Overdrive | Marshall Guv'nor |
| Danelectro Cool Cat Drive v.1 | Fulltone OCD |
| Danelectro Fish n Chips | Boss GE-7 |
| Danelectro French Toast Octave Fuzz | Foxx Tone Machine |
| Danelectro Cool Cat Fuzz v.1 | Frantone Peachfuzz |
| Danelectro FAB 1 Distortion | Boss DS-1 |
| Danelectro FAB 2 Overdrive | Nadine Overdrive |
| Danelectro FAB Tone Distortion | Boss MT-2 |
| Mooer ShimVerb | Strymon Blue Sky |
| Mooer Twin Looper | Boss RC20 |
| Caline CP-11 Puffer | Jim Dunlop Fuzz Face (silicon) |
| DeltaLab TO1 | Ibanez Tube Screamer |
| TC Electronic Crescendo Auto Swell | Boss SG-1 Slow Gear |
| TC Electronic Iron Curtain Noise Gate | Boss NS-2 Noise Suppressor |
| TC Electronic Eye Master Metal Distortion | Boss HM-2 Heavy Metal |
| TC Electronic El Mocambo Overdrive | Ibanez TS-9 |
| TC Electronic Honey Pot Fuzz | Electro-Harmonix Big Muff Pi |
| TC Electronic 3rd Dimension Chorus | Boss DC-2 Dimension Chorus |
| TC Electronic Thunderstorm Flanger | Boss BF-2 Flanger |
| TC Electronic Rusty Fuzz | Boss FZ-2 HYPER Fuzz |