Parts · ICs
TL061
Single JFET-Input Op-Amp DIP-8 / SOIC-8.34 circuits use this part. Listed as: DIP-8 W7.62mm; Operational amplifier, DIP8; Single op-amp, 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 8), 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 |
|---|---|---|---|---|---|---|---|
| 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.
Fits the same socket
| Part | Input | Supply | GBW | Slew | Noise | Iq | Boards | Differs |
|---|---|---|---|---|---|---|---|---|
| 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. |
| LM308 | bipolar | 10–36 V | 0.3 mA | 96 | bipolar input; 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. | |||
| 741 | 10–30 V | 0.5 V/µs | 0.13 mA | 256 | much slower. This 2026 revision lists pins 1 and 5 as no-connect on the DIP, so an offset-trim pot there does nothing. | |||
| TL071 | JFET | 4.5–40 V | 5.25 MHz | 20 V/µs | 37 nV | 1.4 mA | 178 | draws 1.4 mA per amplifier; much faster, may oscillate in a slow part's place. 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; much faster, may oscillate in a slow part's place. JFET input; this revision shows no offset-null pins on the DIP. |
| LF356 | JFET | ?–36 V | 5 MHz | 12 V/µs | 12 nV | 5 mA | 14 | draws 5 mA per amplifier; much faster, may oscillate in a slow part's place. JFET single drawing about 5 mA; specified at ±15 V. |
| 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; much faster, may oscillate in a slow part's place. Trimmed-offset upgrade for the TL071/TL081; pins 1, 5 and 8 are no-connect in this revision. |
| LM301A | bipolar | 10–36 V | 1 V/µs | 1.8 mA | 23 | bipolar input; 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. | ||
| TS321 | bipolar | 3–30 V | 0.8 MHz | 0.4 V/µs | 50 nV | 0.6 mA | 1 | bipolar input; input range reaches the negative rail; draws 0.6 mA per amplifier; much slower. Single-supply LM321-style op-amp sold only in SOIC-8 and SOT-23, so a DIP socket needs an adapter. |
| OP07CP | bipolar | 6–36 V | 0.6 MHz | 0.3 V/µs | 9.8 nV | 1 | bipolar input; much slower. Precision but slow (0.3 V/µs); its offset trim uses pins 1 and 8, not the 741's 1 and 5. |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Atom Fuzz Drive TL061 ETI Fuzztone · 125B | ETI Fuzztone | Fuzz | Aion FX | 125B | 3 | $12.50 | 36 | |
| BAJA ENG Overdrive Vero23×26 Unverified 2SK117 · BC547B · TL061 · TL062 BAJA ENG Overdrive | BAJA ENG Overdrive | Preamp / Amp-in-a-box | Dirtbox Layouts | — | 6 | — | 42 | |
| BAJA EVH 5150 Overdrive Vero32×23 Verified 2SK117 · BC557B · TL061 · TL062 BAJA EVH 5150 Overdrive | BAJA EVH 5150 Overdrive | Preamp / Amp-in-a-box | Dirtbox Layouts | — | 5 | — | 45 | |
| BAJA EVH 5150 Overdrive w. MTKs gain mods Vero32×23 Verified 2SK117 · BC557B · TL061 · TL062 BAJA EVH 5150 Overdrive | BAJA EVH 5150 Overdrive | Preamp / Amp-in-a-box | Dirtbox Layouts | — | 5 | — | 50 | |
| BAJA MDR Overdrive Vero23×26 Unverified 2SK117 · BC547B · TL061 · TL062 BAJA MDR Overdrive | BAJA MDR Overdrive | Preamp / Amp-in-a-box | Dirtbox Layouts | — | 6 | — | 40 | |
| BAJA VH4 Overdrive w tonestack Vero24×26 Unverified 2SK117 · BC547B · TL061 · TL062 BAJA VH4 Overdrive w tonestack | BAJA VH4 Overdrive w tonestack | Preamp / Amp-in-a-box | Dirtbox Layouts | — | 5 | — | 41 | |
| Demeter Fuzzulator Vero17×16 Verified LF442 · TL061 Demeter Fuzzulator | Demeter Fuzzulator | Fuzz | Dirtbox Layouts | — | 3 | — | 24 | |
| Demeter Tremulator Vero Verified LF351 · LF442 · TL061 · VTL5C1 Demeter Tremulator | Demeter Tremulator | Vibrato / Chorus | Dirtbox Layouts | — | 2 | — | 21 | |
| ETI Fuzztone Vero17×12 Verified TL061 ETI Fuzztone | ETI Fuzztone | Overdrive | Dirtbox Layouts | — | 3 | — | 25 | |
| 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 | |
| Boss DS-1 Distortion Perfboard Verified 2N3904 · TL061 Boss DS-1 | Boss DS-1 | Distortion | Effects Layouts (blog) | — | 3 | — | 28 | |
| DOD FX55 Distortion (2-knob version) Perfboard Verified TL061 DOD FX55 Distortion (2-knob version) · 1590A | DOD FX55 Distortion (2-knob version) | Distortion | Effects Layouts (blog) | 1590A | 2 | — | 19 | |
| Demeter Fuzzulator Perfboard Verified LF442 · TL061 Demeter Fuzzulator | Demeter Fuzzulator | Fuzz | Effects Layouts (blog) | — | 3 | — | 25 | |
| Demeter Tremulator Perfboard Verified LF351 · LF442 · TL061 · VTL5C1 Demeter Tremulator | Demeter Tremulator | Tremolo | Effects Layouts (blog) | — | 2 | — | 22 | |
| ETI Fuzztone Perfboard Unverified TL061 ETI Fuzztone | ETI Fuzztone | Fuzz | Effects Layouts (blog) | — | 3 | — | 22 | |
| MXR Micro Chorus Perfboard Unverified 2N5088 · MN3207 · TL061 · TL062 MXR Micro Chorus · 125B | MXR Micro Chorus | Vibrato / Chorus | Effects Layouts (blog) | 125B | 1 | — | 39 | |
| Oberheim Matrix 6 2N5172 · 2SA1005 · 2SC1675 · 2SC2785 | — | Ring Mod / Synth | Experimentalists Anonymous | — | — | — | 251 | |
| Micro MX TL061 MXR Micro Amp · 1590A | MXR Micro Amp | Preamp / Amp-in-a-box | Five Cats Pedals | 1590A | 1 | £4.00 | 18 | |
| Jailbreak 741 · LM741 · TL061 MXR Jail Guitar Doors Drive · 1590B | MXR Jail Guitar Doors Drive | Overdrive | Fuzz Dog | 1590B | 1 | £31.20 | 31 | |
| MicroAmp TL061 MXR Micro Amp · 1590B | MXR Micro Amp | Boost | Fuzz Dog | 1590B | 1 | £21.60 | 17 | |
| Dr. Phybes v4 2N4125 · 2N5952 · TL061 · TL071 | — | Phaser | GuitarPCB | — | 1 | $8.95 out | 58 | |
| Engel Pre-amp BC547B · J201 · TL061 · TL064 ENGL 530 Preamp · 125B | ENGL 530 Preamp | Distortion | PCB Guitar Mania | 125B | 6 | €11.90 out | 67 | |
| The Slammer Overdrive 741 · TL061 · TL061CP · UA741CP MXR Jail Guitar Doors Drive · 125B | MXR Jail Guitar Doors Drive | Fuzz | PedalPCB | 125B | 1 | $12.00 | 35 | |
| Demeter Tremulator LF351 · LF442 · TL061 Demeter Tremulator | Demeter Tremulator | Tremolo | Revolution Deux | — | 2 | — | 33 | |
| Wood Owl Acoustic J201 · TL061 · TL072 Rockman Acoustic Guitar Pedal · 125B | Rockman Acoustic Guitar Pedal | EQ / Filter | RWL Pedals | 125B | 4 | — | 89 | |
| Baja ENG Overdrive Vero23×25 Unverified 2SK117 · BC547B · TL061 · TL062 BAJA ENG Overdrive · 125B | BAJA ENG Overdrive | Preamp / Amp-in-a-box | Tagboard Effects | 125B | 6 | — | 39 | |
| Baja MDR Overdrive Vero23×25 Verified 2SK117 · BC547B · TL061 · TL062 BAJA MDR Overdrive · 1590B | BAJA MDR Overdrive | Preamp / Amp-in-a-box | Tagboard Effects | 1590B | 6 | — | 38 | |
| DOD FX50 Overdrive Preamp Vero14×11 Verified TL061 DOD FX50 Overdrive Preamp | DOD FX50 Overdrive Preamp | Overdrive | Tagboard Effects | — | 2 | — | 14 | |
| DOD FX55 Distortion Vero Verified TL061 DOD FX55 Distortion | DOD FX55 Distortion | Distortion | Tagboard Effects | — | 2 | — | 14 | |
| Demeter Fuzzulator Vero18×17 Verified LF442 · TL061 Demeter Fuzzulator | Demeter Fuzzulator | Fuzz | Tagboard Effects | — | 3 | — | 29 | |
| ETI Fuzztone Vero Verified TL061 ETI Fuzztone | ETI Fuzztone | Distortion | Tagboard Effects | — | 3 | — | 20 | |
| MXR Microamp - compact layout Vero12×11 Verified TL061 MXR Microamp - compact layout | MXR Microamp - compact layout | Boost | Tagboard Effects | — | 1 | — | 15 | |
| Madbean Fencepost (Noise Gate / Expander) Vero21×23 Verified BC560 · LM13700 · TL061 Madbean Fencepost (Noise Gate / Expander) | Madbean Fencepost (Noise Gate / Expander) | Noise Gate | Tagboard Effects | — | 1 | — | 39 | |
| John Hollis RockFace Vero TL061 John Hollis RockFace | John Hollis RockFace | Fuzz | turretboard.org | — | 2 | — | 14 |