Parts · ICs
741
Single BJT-Input Op-Amp DIP-8 / SOIC-8.251 circuits use this part. Listed as: Single op-amp, DIP8; Op Amp; IC; Operational amplifier, DIP-8; Operational amplifier, DIP8.
Datasheet · from ti.com
Substitutes same socket
Parts that fit the same socket: the same function, pin count and pinout. The figures are read off each part's datasheet (this one's from page 5), typical where the sheet gives a typical value, otherwise the maximum. Closest first; the last column says what differs. A different part can change the sound, and a circuit may lean on one particular figure, so read the build document's notes before you swap.
This part
| Part | Input | Supply | GBW | Slew | Noise | Iq | Boards |
|---|---|---|---|---|---|---|---|
| 741 | 10–30 V | 0.5 V/µs | 0.13 mA | 256 |
This 2026 revision lists pins 1 and 5 as no-connect on the DIP, so an offset-trim pot there does nothing.
Fits the same socket
| Part | Input | Supply | GBW | Slew | Noise | Iq | Boards | Differs |
|---|---|---|---|---|---|---|---|---|
| OP07CP | bipolar | 6–36 V | 0.6 MHz | 0.3 V/µs | 9.8 nV | 1 | Precision but slow (0.3 V/µs); its offset trim uses pins 1 and 8, not the 741's 1 and 5. | |
| TS321 | bipolar | 3–30 V | 0.8 MHz | 0.4 V/µs | 50 nV | 0.6 mA | 1 | input range reaches the negative rail; draws 0.6 mA per amplifier. Single-supply LM321-style op-amp sold only in SOIC-8 and SOT-23, so a DIP socket needs an adapter. |
| LM308 | bipolar | 10–36 V | 0.3 mA | 96 | needs a compensation capacitor across pins 1 and 8. Needs a compensation capacitor (30 pF typical) between pins 1 and 8; the cap sets slew rate and tone. | |||
| TL061 | JFET | 10–30 V | 1 MHz | 3.5 V/µs | 30 nV | 0.2 mA | 34 | Low-power JFET op-amp at 200 µA; the pin table gives offset null on 1 and 5 though the drawing marks them NC. |
| LM301A | bipolar | 10–36 V | 1 V/µs | 1.8 mA | 23 | needs a compensation capacitor across pins 1 and 8; draws 1.8 mA per amplifier. Externally compensated: needs a capacitor (30 pF for unity gain) between pins 1 and 8, and the value sets its slew and treble response in fuzz and distortion circuits. | ||
| LF355 | JFET | ?–36 V | 2.5 MHz | 5 V/µs | 20 nV | 2 mA | 1 | draws 2 mA per amplifier. Lower-power, slower sibling of the LF356. |
| LF356 | JFET | ?–36 V | 5 MHz | 12 V/µs | 12 nV | 5 mA | 14 | draws 5 mA per amplifier. JFET single drawing about 5 mA; specified at ±15 V. |
| TL071 | JFET | 4.5–40 V | 5.25 MHz | 20 V/µs | 37 nV | 1.4 mA | 178 | draws 1.4 mA per amplifier. JFET input; this revision shows pins 1, 5 and 8 as no-connect on the DIP, so no offset trim. |
| TL081 | JFET | 4.5–40 V | 5.25 MHz | 20 V/µs | 37 nV | 1.4 mA | 20 | draws 1.4 mA per amplifier. JFET input; this revision shows no offset-null pins on the DIP. |
| TL051 | JFET | 10–30 V | 4.5 MHz | 17.8 V/µs | 10.8 nV | 2.1 mA | 8 | draws 2.1 mA per amplifier. Trimmed-offset upgrade for the TL071/TL081; pins 1, 5 and 8 are no-connect in this revision. |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Antipode Vintage Fuzz 2N3904 · 741 · LM741 Roland AF-60 Bee Gee · 125B | Roland AF-60 Bee Gee | Fuzz | Aion FX | 125B | 3 | $12.50 | 54 | |
| Aphelion Vintage Distortion 741 · LM741 MXR Distortion+ · 125B | MXR Distortion+ | Distortion | Aion FX | 125B | 4 | $12.50 | 30 | |
| Aphelion (Legacy) 4558 · 741 · JRC4558 · LM741 MXR Distortion+ · 1590B | MXR Distortion+ | Distortion | Aion FX | 1590B | 2 | — | 21 | |
| Corvus Distortion / Sustainer 4558 · 741 · LM741 · RC4558P Electro-Harmonix Op-Amp Big Muff Pi · 125B | Electro-Harmonix Op-Amp Big Muff Pi | Fuzz | Aion FX | 125B | 3 | $12.50 | 56 | |
| Corvus (Legacy) 4558 · 741 · LM741 · RC4558P Electro-Harmonix Op-Amp Big Muff Pi · 1590B | Electro-Harmonix Op-Amp Big Muff Pi | Fuzz | Aion FX | 1590B | 3 | — | 46 | |
| L5 Preamp (Legacy) 2N3906 · 2N5457 · 4558 · 741 Lab Series L5 · 1590X | Lab Series L5 | Preamp / Amp-in-a-box | Aion FX | 1590X | 2 | — | 142 | |
| Onyx Volume Swell 2N5088 · 2SK208-GR · 741 · LM741 Boss SG-1 Slow Gear · 125B | Boss SG-1 Slow Gear | Other | Aion FX | 125B | 2 | $12.50 | 73 | |
| Polyphemus Optical Compressor 4558 · 741 · LM741 · LT1054 Pigtronix Philosopher's Tone · 125B | Pigtronix Philosopher's Tone | Overdrive | Aion FX | 125B | 5 | $12.50 | 79 | |
| Quark Vintage Overdrive 741 · LM741 Maxon OD-880 · 1590B | Maxon OD-880 | Overdrive | Aion FX | 1590B | 2 | $12.50 | 59 | |
| Quark (Legacy) 741 · LM741P Maxon OD-880 · 1590B | Maxon OD-880 | Overdrive | Aion FX | 1590B | 2 | — | 36 | |
| Tesseract Boost / Preamp 2N5088 · 741 · LM741 · LT1054 TC Electronic Integrated Preamp · 125B | TC Electronic Integrated Preamp | Boost | Aion FX | 125B | 3 | $12.50 | 54 | |
| 'Zilla 741 · UA741 Last Gasp Arts Green Monster · 125B | Last Gasp Arts Green Monster | Fuzz | Dead End FX | 125B | 4 | $12.00 | 22 | |
| Brass Monkey 2N2222A · 4558 · 741 · LM4558N Devi Ever Silver Rose V1 · 1590J | Devi Ever Silver Rose V1 | Fuzz | Dead End FX | 1590J | 8 | $15.00 | 137 | |
| Pompei 2N3956 · 2N5087 · 2N5089 · 4558 what most mere mortal effects aficionados spend a lifetime lusting after; an EMS Synthi Hi Fli | what most mere mortal effects aficionados spend a lifetime lusting after; an EMS Synthi Hi Fli | Fuzz | Dead End FX | — | 14 | $75.00 | 452 | |
| Skirmish 2N5088 · 741 · LM741 Univox Super-Fuzz · 1590BBS | Univox Super-Fuzz | Fuzz | Dead End FX | 1590BBS | 4 | $15.00 | 79 | |
| rdist equals dist plus 250 741 · LM741 1590A | — | Distortion | delyk PCBs | 1590A | 2 | — out | 21 | |
| Aion Fx Antipode / Roland AF-60 Bee Gee Vero19×16 Verified 2N3904 · 741 · LM741 Roland AF-60 Bee Gee | Roland AF-60 Bee Gee | Distortion | Dirtbox Layouts | — | 3 | — | 32 | |
| Ampeg Phazzer Vero26×25 Verified 1458 · 2N3906 · 741 · CD4069 Ampeg Phazzer | Ampeg Phazzer | Vibrato / Chorus | Dirtbox Layouts | — | 1 | — | 21 | |
| BYOC Orange Distortion Vero22×17 Unverified 2N5088 · 741 · LM741 BYOC Orange Distortion | BYOC Orange Distortion | Distortion | Dirtbox Layouts | — | 4 | — | 35 | |
| Blackhawk Amplifiers Gandalf Octave Fuzz Vero16×16 Verified 741 · LM741 Blackhawk Amplifiers Gandalf Octave Fuzz | Blackhawk Amplifiers Gandalf Octave Fuzz | Fuzz | Dirtbox Layouts | — | 1 | — | 15 | |
| Blackhawk Amplifiers Morgul Boost Vero14×11 Verified 741 · LM741 Blackhawk Amplifiers Morgul Boost | Blackhawk Amplifiers Morgul Boost | Boost | Dirtbox Layouts | — | 2 | — | 14 | |
| Blackhawk Amplifiers Valkyrie Drive V3 Vero19×14 Verified 741 · BS170 · LM386 · LM741 Blackhawk Amplifiers Valkyrie Drive V3 | Blackhawk Amplifiers Valkyrie Drive V3 | Fuzz | Dirtbox Layouts | — | 3 | — | 25 | |
| Boot-Leg Effectors HZM-1,0 Hizumi Vero19×19 Verified 2SK30A · 741 · NE5534 · NJM5534D Boot-Leg Effectors HZM-1,0 Hizumi | Boot-Leg Effectors HZM-1,0 Hizumi | Distortion | Dirtbox Layouts | — | 3 | — | 31 | |
| Boss DS-1 Distortion Pre 1994 Vero22×16 Verified 2N5088 · 741 · LM741 Boss DS-1 | Boss DS-1 | Distortion | Dirtbox Layouts | — | 3 | — | 27 | |
| Boss NF-1 Noise Gate Vero25×22 Verified 2N5485 · 741 · BC550 · LM741 Boss NF-1 Noise Gate | Boss NF-1 Noise Gate | Noise Gate | Dirtbox Layouts | — | 2 | — | 40 | |
| Caroline Guitar Company Wave Canon Mk.1 Vero17×14 Verified 2N5457 · 741 · LM741 Caroline Guitar Company Wave Cannon Mk. I | Caroline Guitar Company Wave Cannon Mk. I | Distortion | Dirtbox Layouts | — | 4 | — | 28 | |
| Catalinbread Heliotrope Vero18×19 Verified 2N5457 · 741 · LM741 · TL072 Catalinbread Heliotrope | Catalinbread Heliotrope | Fuzz | Dirtbox Layouts | — | 4 | — | 26 | |
| Crowther Hot Cake 1977 version Vero14×14 Verified 741 · LM741 Crowther '77 Hot Cake | Crowther '77 Hot Cake | Fuzz | Dirtbox Layouts | — | 2 | — | 20 | |
| DNA Analogic Smoky Fuzz Vero14×12 Verified 741 · LM741 DNA Analogic Smoky Fuzz | DNA Analogic Smoky Fuzz | Fuzz | Dirtbox Layouts | — | 3 | — | 20 | |
| DeArmond Square Wave Vero15×10 Unverified 741 · LM741 DeArmond Square Wave Distortion Generator | DeArmond Square Wave Distortion Generator | Distortion | Dirtbox Layouts | — | 2 | — | 17 | |
| Death by Audio Apocalypse Vero29×26 Verified 2N5088 · 741 · LM741 · MPSA05 Death By Audio Apocalypse | Death By Audio Apocalypse | Distortion | Dirtbox Layouts | — | 3 | — | 47 | |
| Death by Audio Octave Clang Vero17×9 Verified 741 · LM741 Death By Audio Octave Clang | Death By Audio Octave Clang | Fuzz | Dirtbox Layouts | — | 3 | — | 14 | |
| Death by Audio Super Fuzz War - Boost section Vero17×19 Unverified 741 · LM741 Univox Super-Fuzz | Univox Super-Fuzz | Boost | Dirtbox Layouts | — | 1 | — | 21 | |
| Devi Ever Silver Rose V1 Vero38×33 Verified 2N2222A · 4558 · 741 · LM4558 Devi Ever Silver Rose V1 | Devi Ever Silver Rose V1 | Fuzz | Dirtbox Layouts | — | 9 | — | 70 | |
| Dharma Sound / Colorsound Distorter Vero20×19 Verified 1458 · 741 · BC182 · LM741 Colorsound Distorter | Colorsound Distorter | Distortion | Dirtbox Layouts | — | 2 | — | 21 | |
| Earth Sounds Graphic Fuzz Vero17×7 Verified 741 · LM741 Earth Sounds Graphic Fuzz | Earth Sounds Graphic Fuzz | Fuzz | Dirtbox Layouts | — | 2 | — | 9 | |
| Effdub Flapjack OD Vero14×11 Verified 741 · LM741 Effdub Flapjack OD | Effdub Flapjack OD | Overdrive | Dirtbox Layouts | — | 3 | — | 16 | |
| Electro Harmonix Deluxe Big Muff - EH3054C version Vero32×30 Unverified 1458 · 2N5087 · 4558 · 741 Electro-Harmonix Big Muff Pi | Electro-Harmonix Big Muff Pi | Compressor | Dirtbox Layouts | — | 5 | — | 60 | |
| Electro Harmonix Frequency Analyzer - Modern version Vero23×31 Unverified 4558 · 741 · AD633JN · ICL8038 Electro-Harmonix Frequency Analyzer - Modern version | Electro-Harmonix Frequency Analyzer - Modern version | Vibrato / Chorus | Dirtbox Layouts | — | 3 | — | 47 | |
| Electro Harmonix Little Big Muff Op Amp version Vero20×18 Verified 4558 · 741 · RC4558 · UA741 Electro-Harmonix Op-Amp Big Muff Pi | Electro-Harmonix Op-Amp Big Muff Pi | Distortion | Dirtbox Layouts | — | 1 | — | 36 | |
| Electro Harmonix V5 IC Big Muff Vero19×18 Verified 4558 · 741 · RC4558 · UA741 Electro-Harmonix Op-Amp Big Muff Pi | Electro-Harmonix Op-Amp Big Muff Pi | Distortion | Dirtbox Layouts | — | 3 | — | 34 | |
| Electro Harmonix V5 IC Big Muff MOJO layout Vero26×24 Verified 4558 · 741 · RC4558 · UA741 Electro-Harmonix Op-Amp Big Muff Pi | Electro-Harmonix Op-Amp Big Muff Pi | Distortion | Dirtbox Layouts | — | 3 | — | 38 | |
| Exar DS-01 Distortion Vero19×18 Unverified 741 · BC547B · LM741 Exar DS-01 Distortion | Exar DS-01 Distortion | Distortion | Dirtbox Layouts | — | 3 | — | 24 | |
| Exar DS-02 Distortion Vero20×16 Unverified 741 · BC550B · J113 · LM741 Exar DS-02 Distortion | Exar DS-02 Distortion | Distortion | Dirtbox Layouts | — | 3 | — | 24 | |
| Frantone Vibutron Vero20×21 Verified 2N7000 · 741 · ICL8038 · LM741 Frantone Vibutron | Frantone Vibutron | Vibrato / Chorus | Dirtbox Layouts | — | 2 | — | 27 | |
| Frost Giant Electronics Little Acid Fuzz Vero20×18 Verified 4558 · 741 · JRC4558D · LM741 Frost Giant Electronics Little Acid Fuzz | Frost Giant Electronics Little Acid Fuzz | Distortion | Dirtbox Layouts | — | 1 | — | 31 | |
| God City Gradient w. gain ctrl Vero15×12 Verified 741 · LM741 God City Gradient w. gain ctrl | God City Gradient w. gain ctrl | Boost | Dirtbox Layouts | — | 2 | — | 18 | |
| God City Instruments Uno Fuzz Vero20×21 Verified 741 · BC550 · LM741 God City Instruments Uno Fuzz | God City Instruments Uno Fuzz | Fuzz | Dirtbox Layouts | — | 1 | — | 33 | |
| Grind Custom Fx / Juansolo Fx Ultra '78 Vero19×18 Verified 4558 · 741 · LM741 Grind Custom Fx Ultra '78 | Grind Custom Fx Ultra '78 | Distortion | Dirtbox Layouts | — | 4 | — | 34 | |
| Hofner Fuzz Vero17×11 Unverified 741 · J201 · LM741 Hofner Fuzz | Hofner Fuzz | Fuzz | Dirtbox Layouts | — | 3 | — | 22 | |
| Lastgasp Art Laboratories GM2 Green Monster Vero10×14 Verified 741 · LM741 Lastgasp Art Laboratories GM2 Green Monster | Lastgasp Art Laboratories GM2 Green Monster | Fuzz | Dirtbox Layouts | — | 4 | — | 16 | |
| MXR Distortion Plus Vero14×10 Verified 741 · LM741 MXR Distortion+ | MXR Distortion+ | Distortion | Dirtbox Layouts | — | 2 | — | 14 | |
| MXR Jail Guitar Doors Drive Vero18×17 Verified 741 · TL061 · UA741 MXR Jail Guitar Doors Drive | MXR Jail Guitar Doors Drive | Overdrive | Dirtbox Layouts | — | 1 | — | 29 | |
| MXR Micro Amp Vero14×11 Unverified 741 · LM741 MXR Micro Amp | MXR Micro Amp | Boost | Dirtbox Layouts | — | 1 | — | 18 | |
| Maestro FRB-1 Full Range Booster Vero22×24 Unverified 2N5088 · 741 · 7660S · ICL7660S Maestro FRB-1 Full Range Booster | Maestro FRB-1 Full Range Booster | Boost | Dirtbox Layouts | — | 1 | — | 38 | |
| Maestro RM-1A Ring Modulator Vero31×33 Unverified 1458 · 741 · 7812 · 7912 Maestro RM-1A Ring Modulator | Maestro RM-1A Ring Modulator | Vibrato / Chorus | Dirtbox Layouts | — | 3 | — | 47 | |
| Maxon OD-880 Overdrive Vero19×16 Unverified 741 · LM741 Maxon OD-880 | Maxon OD-880 | Overdrive | Dirtbox Layouts | — | 2 | — | 20 | |
| Memphis Tremolo Modulator Vero20×19 Unverified 2N3906 · 2N5457 · 741 · LM741 Memphis Tremolo Modulator | Memphis Tremolo Modulator | Vibrato / Chorus | Dirtbox Layouts | — | 2 | — | 22 | |
| Morley D1B Distortion Vero14×12 Unverified 741 · LM741 Morley MOD-D1B Distortion One | Morley MOD-D1B Distortion One | Distortion | Dirtbox Layouts | — | 2 | — | 18 | |
| Multivox/Big Jam SE-8 Distortion Vero18×13 Verified 2N5088 · 741 · LM741 Multivox/Big Jam SE-8 Distortion | Multivox/Big Jam SE-8 Distortion | Distortion | Dirtbox Layouts | — | 3 | — | 25 | |
| Roland AF-60 Bee Gee Vero19×15 Verified 741 · BC549C · LM741 Roland AF-60 Bee Gee | Roland AF-60 Bee Gee | Distortion | Dirtbox Layouts | — | 2 | — | 29 | |
| Satronik Fuzz Sustainer Vero21×18 Verified 741 · BC108C · BC149 · LM741 Satronik Fuzz Sustainer | Satronik Fuzz Sustainer | Distortion | Dirtbox Layouts | — | 3 | — | 32 | |
| Spektr 2 Fuzz Wah Vero18×15 Unverified 2N2396 · 741 · LM741 · PN2222 Spektr 2 Fuzz Wah | Spektr 2 Fuzz Wah | Fuzz | Dirtbox Layouts | — | 3 | — | 29 | |
| Tesla AYZ-030 Graphic Equalizer Vero22×19 Unverified 741 · BC149 · LM741 Tesla AYZ-030 Graphic Equalizer | Tesla AYZ-030 Graphic Equalizer | EQ / Filter | Dirtbox Layouts | — | 2 | — | 36 | |
| Top Gear Fuzz Sustain Vero18×9 Unverified 741 · LM741 Top Gear Fuzz Sustain | Top Gear Fuzz Sustain | Fuzz | Dirtbox Layouts | — | 3 | — | 15 | |
| Univox CO-105 Uni-Comp Vero15×14 Unverified 741 · LDR · LM741 · PN2222 Univox CO-105 Uni-Comp | Univox CO-105 Uni-Comp | Compressor | Dirtbox Layouts | — | 2 | — | 23 | |
| VFE Distortion 3 Vero17×13 Unverified 741 · BS170 · LM741 VFE Distortion 3 | VFE Distortion 3 | Distortion | Dirtbox Layouts | — | 6 | — | 26 | |
| VFE IC 5:00 Fuzz Vero19×21 Verified 4580 · 4580D · 741 · LM741 VFE IC 5:00 Fuzz | VFE IC 5:00 Fuzz | Distortion | Dirtbox Layouts | — | 5 | — | 37 | |
| DOD 250 Overdrive Preamp Turret board 741 · LM741 DOD 250 Overdrive Preamp | DOD 250 Overdrive Preamp | Overdrive | EfektPol | — | 2 | — | 21 | |
| MXR Distortion+ Turret board 741 · LM741 MXR Distortion+ | MXR Distortion+ | Distortion | EfektPol | — | 2 | — | 19 | |
| Crempog 741 · LM741 Crowther Hotcake · 1590B | Crowther Hotcake | Overdrive | Effects Layouts | 1590B | 2 | $6.00 | 27 | |
| Drivestortion 741 · LM741 MXR Distortion+ / DOD 250 | MXR Distortion+ / DOD 250 | Distortion | Effects Layouts | — | 2 | $5.00 | 20 | |
| The Intercontinental 4558 · 741 · JRC4558 · LM741 Electro-Harmonix Op-Amp Big Muff Pi · 125B | Electro-Harmonix Op-Amp Big Muff Pi | Fuzz | Effects Layouts | 125B | 2 | $10.00 | 50 | |
| Crowther Audio '77 Hot Cake Perfboard Verified 741 · LM741 Crowther '77 Hot Cake | Crowther '77 Hot Cake | Overdrive | Effects Layouts (blog) | — | 2 | — | 19 | |
| DBA Octave Clang Perfboard Unverified 741 Death By Audio Octave Clang · 1590B | Death By Audio Octave Clang | Fuzz | Effects Layouts (blog) | 1590B | 3 | — | 14 | |
| DOD Overdrive 250 Grey Spec Perfboard Verified 741 · LM741 DOD 250 Overdrive Preamp · 1590A | DOD 250 Overdrive Preamp | Distortion | Effects Layouts (blog) | 1590A | 2 | — | 16 | |
| ESR Graphic Fuzz Perfboard Verified 741 ESR Graphic Fuzz · 1590A | ESR Graphic Fuzz | Fuzz | Effects Layouts (blog) | 1590A | 2 | — | 11 | |
| Electro Harmonix '77 OpAmp Big Muff Perfboard Verified 4558 · 741 Electro-Harmonix Op-Amp Big Muff Pi | Electro-Harmonix Op-Amp Big Muff Pi | Distortion | Effects Layouts (blog) | — | 3 | — | 39 | |
| Frantone Vibutron Perfboard17×22 Verified 2N7000 · 741 · ICL8038 · LM741 Frantone Vibutron | Frantone Vibutron | Tremolo | Effects Layouts (blog) | — | 2 | — | 27 | |
| Grind Customs FX Ultra '78 Perfboard Verified 4558 · 741 Grind Custom Fx Ultra '78 · 1590B | Grind Custom Fx Ultra '78 | Distortion | Effects Layouts (blog) | 1590B | 4 | — | 34 | |
| JSA Ampldrive Perfboard Verified 2N7000 · 741 · LM741 JSA Ampldrive | JSA Ampldrive | Overdrive | Effects Layouts (blog) | — | 3 | — | 19 | |
| MXR Distortion + Perfboard Verified 741 · LM741 MXR Distortion+ · 1590B | MXR Distortion+ | Distortion | Effects Layouts (blog) | 1590B | 2 | — | 15 | |
| MXR Micro Amp Perfboard Verified 741 · LM741 MXR Micro Amp · 1590A | MXR Micro Amp | Boost | Effects Layouts (blog) | 1590A | 1 | — | 17 | |
| MXR Noise Gate Perfboard Verified 2N3904 · 2N5952 · 741 MXR Noise Gate | MXR Noise Gate | Noise Gate | Effects Layouts (blog) | — | 1 | — | 24 | |
| MXR Script Phase 90 Perfboard Verified 2N4125 · 2N5952 · 741 MXR Phase 90 | MXR Phase 90 | Phaser | Effects Layouts (blog) | — | 1 | — | 21 | |
| Maxon CP101 Compressor Perfboard Verified 2N3904 · 741 · LDR · UA741 Maxon CP101 Compressor · 1590B | Maxon CP101 Compressor | Compressor | Effects Layouts (blog) | 1590B | 2 | — | 23 | |
| Maxon OD880 Soft Distortion Overdrive Perfboard Verified 741 · LM741 Maxon OD-880 · 1590B | Maxon OD-880 | Overdrive | Effects Layouts (blog) | 1590B | 2 | — | 18 | |
| Noise Gate Perfboard Verified 2N3904 · 741 · BF245 Noise Gate · 1590B | Noise Gate | Noise Gate | Effects Layouts (blog) | 1590B | 2 | — | 30 | |
| Roland AF-60 BeeGee Perfboard Unverified 2N5088 · 741 · LM741 Roland AF-60 Bee Gee · 1590B | Roland AF-60 Bee Gee | Fuzz | Effects Layouts (blog) | 1590B | 2 | — | 29 | |
| Simple Clipper Distortion Perfboard Verified 741 Simple Clipper Distortion · 1590A | Simple Clipper Distortion | Distortion | Effects Layouts (blog) | 1590A | 1 | — | 11 | |
| Square Wave Oscillator Perfboard Verified 741 Square Wave Oscillator · 1590G | Square Wave Oscillator | Ring Mod / Synth | Effects Layouts (blog) | 1590G | 2 | — | 11 | |
| VFE Distortion 3 Perfboard Verified 741 · BS170 · LM741 VFE Distortion 3 | VFE Distortion 3 | Distortion | Effects Layouts (blog) | — | 6 | — | 26 | |
| Wampler Distortion Plus Mods Perfboard Verified 741 MXR Distortion+ | MXR Distortion+ | Distortion | Effects Layouts (blog) | — | 3 | — | 26 | |
| 45 to 90 hz hum filter 741 | — | EQ / Filter | Experimentalists Anonymous | — | — | — | 10 | |
| Amplified White Noise Generator 741 · LM386 · MPS3904 | — | Ring Mod / Synth | Experimentalists Anonymous | — | — | — | 14 | |
| Anderton buffer baord 741 Anderton buffer baord | Anderton buffer baord | Utility | Experimentalists Anonymous | — | — | — | 7 | |
| BOSS DS-1 741 Boss DS-1 | Boss DS-1 | Distortion | Experimentalists Anonymous | — | 1 | — | 20 | |
| Bob Blick Guitar Preamp 741 · LM741 | — | Preamp / Amp-in-a-box | Experimentalists Anonymous | — | — | — | 15 | |
| Building the Gristleizer 2N3819 · 741 · BC108 · BC187 | — | Fuzz | Experimentalists Anonymous | — | 3 | — | 52 | |
| Butterworth filter 741 · LM741 | — | EQ / Filter | Experimentalists Anonymous | — | — | — | 6 |