Parts · ICs
LM308
Single BJT-Input Op-Amp DIP-8 / SOIC-8.95 circuits use this part. Listed as: IC; Semiconductors; Single op-amp, DIP8; IC LM308 (or OP07) DIP8; Op Amp.
Datasheet · archived copy from Motorola; the part is discontinued and the maker no longer publishes it
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 3), 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 |
|---|---|---|---|---|---|---|---|
| LM308 | bipolar | 10–36 V | 0.3 mA | 96 |
Needs a compensation capacitor (30 pF typical) between pins 1 and 8; the cap sets slew rate and tone.
Fits the same socket
| Part | Input | Supply | GBW | Slew | Noise | Iq | Boards | Differs |
|---|---|---|---|---|---|---|---|---|
| LM301A | bipolar | 10–36 V | 1 V/µs | 1.8 mA | 23 | 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. | ||
| OP07CP | bipolar | 6–36 V | 0.6 MHz | 0.3 V/µs | 9.8 nV | 1 | internally compensated: the board's capacitor across pins 1 and 8 no longer shapes the tone; pins 1, 5, 8 are offset null (1, 8), NC (5). 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 | internally compensated: the board's capacitor across pins 1 and 8 no longer shapes the tone; pins 1, 5, 8 are NC; input range reaches the negative rail. Single-supply LM321-style op-amp sold only in SOIC-8 and SOT-23, so a DIP socket needs an adapter. |
| NE5534 | bipolar | 10–30 V | 10 MHz | 13 V/µs | 4 nV | 4 mA | 44 | needs a compensation capacitor across pins 5 and 8; draws 4 mA per amplifier. Compensated for a gain of 3 or more; below that it needs a capacitor (22 pF) between pins 5 and 8. |
| CA3130 | mosfet, RR out | 5–16 V | 4 MHz | 10 V/µs | 10 mA | 54 | MOSFET input; 16 V max, not for 18 V; input range reaches the negative rail; rail-to-rail output; draws 10 mA per amplifier. Needs a 47 pF capacitor between pins 1 and 8 for unity-gain stability (15 MHz uncompensated) and is limited to 16 V total supply. | |
| TL061 | JFET | 10–30 V | 1 MHz | 3.5 V/µs | 30 nV | 0.2 mA | 34 | JFET input; internally compensated: the board's capacitor across pins 1 and 8 no longer shapes the tone; pins 1, 5, 8 are offset null (1, 5), NC (8). Low-power JFET op-amp at 200 µA; the pin table gives offset null on 1 and 5 though the drawing marks them NC. |
| 741 | 10–30 V | 0.5 V/µs | 0.13 mA | 256 | internally compensated: the board's capacitor across pins 1 and 8 no longer shapes the tone; pins 1, 5, 8 are NC on the D and P packages (offset null on pins 1 and 5 in the PS package). 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 | JFET input; internally compensated: the board's capacitor across pins 1 and 8 no longer shapes the tone; pins 1, 5, 8 are NC (offset null on pins 1 and 5 only in the PS package); 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 | JFET input; internally compensated: the board's capacitor across pins 1 and 8 no longer shapes the tone; pins 1, 5, 8 are NC (offset null on pins 1 and 5 only in the PS package); draws 1.4 mA per amplifier. JFET input; this revision shows no offset-null pins on the DIP. |
| LF355 | JFET | ?–36 V | 2.5 MHz | 5 V/µs | 20 nV | 2 mA | 1 | JFET input; internally compensated: the board's capacitor across pins 1 and 8 no longer shapes the tone; pins 1, 5, 8 are offset null (1, 5), NC (8); draws 2 mA per amplifier. Lower-power, slower sibling of the LF356. |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Helios (Legacy) 2N5457 · LM308 · LM308N ProCo RAT · 1590B | ProCo RAT | Distortion | Aion FX | 1590B | 4 | — | 35 | |
| Anubis 2N5087 · 2N5089 · BS170 · LM308 Sunn O · 1590BBS | Sunn O | Fuzz | Dead End FX | 1590BBS | 5 | $15.00 | 76 | |
| Bixonic Expandora Vero24×20 Verified 2N3906 · 4558 · H11F1 · JRC4558 Bixonic Expandora | Bixonic Expandora | Distortion | Dirtbox Layouts | — | 3 | — | 36 | |
| Blakemore Effects R.O.U.S. Vero18×15 Verified 2N5457 · LM308 Blakemore Effects R.O.U.S | Blakemore Effects R.O.U.S | Distortion | Dirtbox Layouts | — | 5 | — | 31 | |
| Drunk Beaver Bat V1 Vero21×20 Unverified 2N5457 · BS170 · LM308 · OP07 Drunk Beaver Bat V1 | Drunk Beaver Bat V1 | Distortion | Dirtbox Layouts | — | 3 | — | 35 | |
| Dunwich Amplification Volt Thrower - Big box version Vero21×21 Verified LM308 · LTC1144 · OP07 Dunwich Amplification Volt Thrower - Big box version | Dunwich Amplification Volt Thrower - Big box version | Distortion | Dirtbox Layouts | — | 4 | — | 29 | |
| Earthquaker Devices Sunn O))) Life Pedal Vero22×20 Verified 2N5087 · 2N5089 · BS170 · LM308 EarthQuaker Devices Life pedal | EarthQuaker Devices Life pedal | Boost | Dirtbox Layouts | — | 5 | — | 42 | |
| Fuzzlord Effects Drone Master Vero19×18 Verified LM308 · LM308N · TL071 Fuzzlord Effects Drone Master | Fuzzlord Effects Drone Master | Distortion | Dirtbox Layouts | — | 3 | — | 35 | |
| Fuzzrocious Rat Tail V2 Vero16×13 Verified 2N5458 · LM308 Fuzzrocious Rat Tail V2 | Fuzzrocious Rat Tail V2 | Distortion | Dirtbox Layouts | — | 3 | — | 28 | |
| Idiotbox Blower Box Vero19×14 Verified J201 · LM308 Idiotbox Blower Box | Idiotbox Blower Box | Distortion | Dirtbox Layouts | — | 4 | — | 30 | |
| Oneder Effects Red Ryder Distortion Vero20×20 Verified LM308 · TL072 Oneder Effects Red Ryder Distortion | Oneder Effects Red Ryder Distortion | Distortion | Dirtbox Layouts | — | 5 | — | 33 | |
| PSK SOD-2 Super Overdrive Vero17×16 Unverified 2N5088 · 2SK30A · LM308 PSK SOD-2 Super Overdrive | PSK SOD-2 Super Overdrive | Overdrive | Dirtbox Layouts | — | 3 | — | 28 | |
| PedalPCB / Chuck D. Bones Voodoo Woman Vero21×20 Unverified BC549C · BS170 · J112 · LM308 PedalPCB Chuck D. Bones Voodoo Woman | PedalPCB Chuck D. Bones Voodoo Woman | Distortion | Dirtbox Layouts | — | 5 | — | 45 | |
| ProCo / Fuzzdog 3-Band Rat Vero19×17 Verified 2N5457 · LM308 ProCo Fuzzdog 3-Band Rat | ProCo Fuzzdog 3-Band Rat | Distortion | Dirtbox Layouts | — | 5 | — | 34 | |
| ProCo Brat / Roadkill Vero17×19 Verified 2N5458 · LM308 ProCo Brat / Roadkill | ProCo Brat / Roadkill | Distortion | Dirtbox Layouts | — | 3 | — | 25 | |
| ProCo Fat Rat Vero17×15 Verified 2N5458 · BS170 · LM308 ProCo Fat Rat | ProCo Fat Rat | Distortion | Dirtbox Layouts | — | 3 | — | 30 | |
| ProCo Rat Vero17×12 Verified 2N5458 · LM308 ProCo RAT | ProCo RAT | Distortion | Dirtbox Layouts | — | 3 | — | 26 | |
| ProCo Solo Vero17×17 Unverified 2N5458 · LM308 ProCo Solo | ProCo Solo | Distortion | Dirtbox Layouts | — | 4 | — | 28 | |
| ProCo Turbo Rat Vero18×12 Verified 2N5458 · LM308 ProCo Turbo RAT | ProCo Turbo RAT | Distortion | Dirtbox Layouts | — | 3 | — | 26 | |
| Proco Rat / Fuzzhead Fx Green Lemming Distortion Vero19×18 Verified BS170 · LM308 · PF5102 ProCo RAT | ProCo RAT | Distortion | Dirtbox Layouts | — | 4 | — | 37 | |
| Roger Mayer Voodoo 1 Vero19×18 Verified BC549C · LM308 Roger Mayer Voodoo 1 | Roger Mayer Voodoo 1 | Distortion | Dirtbox Layouts | — | 3 | — | 32 | |
| Stamps Amplification Drive-O-Matic Vero18×16 Unverified 2N5458 · LM308 Stamps Amplification Drive-O-Matic | Stamps Amplification Drive-O-Matic | Distortion | Dirtbox Layouts | — | 4 | — | 30 | |
| VFE Alpha Dog Vero20×13 Verified 2N5458 · BS170 · LM308 VFE Alpha Dog | VFE Alpha Dog | Distortion | Dirtbox Layouts | — | 6 | — | 27 | |
| VFE Dragon Hound Vero22×20 Unverified 2N5458 · 7660S · BS170 · LM308 VFE Dragon Hound | VFE Dragon Hound | Distortion | Dirtbox Layouts | — | 6 | — | 36 | |
| VFE Red Wolf Vero19×13 Verified J111 · LM308 · LM308N VFE Red Wolf | VFE Red Wolf | Distortion | Dirtbox Layouts | — | 5 | — | 23 | |
| Multi RAT 1995 2N5458 · LM308 ProCo RAT · 1590BB2 | ProCo RAT | Distortion | Dirt Monger Instruments | 1590BB2 | 3 | CA$12.00 | 23 | |
| ProCo Rat Turret board 2N5458 · LM308 ProCo RAT | ProCo RAT | Distortion | EfektPol | — | 3 | — | 34 | |
| The Snitch 2N5458 · LM308 · LM308N ProCo RAT | ProCo RAT | Distortion | Eff Dub Audio | — | 3 | — | 32 | |
| Ache Pedal 2N5087 · 2N5089 · LM308 · LM308N EarthQuaker Devices Life pedal · 125B | EarthQuaker Devices Life pedal | Distortion | Effects Layouts | 125B | 4 | $10.00 | 65 | |
| Loyalist 2N5457 · LM308 · LM308N · LM833 JHS Patriot · 125B | JHS Patriot | Distortion | Effects Layouts | 125B | 6 | $12.00 out | 73 | |
| Neotoma 2N5458 · LM308 · LM308N ProCo RAT · 125B | ProCo RAT | Distortion | Effects Layouts | 125B | 3 | $6.00 | 39 | |
| Pepperbox LM308 · LM308N · LTC1144 ProCo RAT · 125B | ProCo RAT | Distortion | Effects Layouts | 125B | 4 | $10.00 out | 47 | |
| EarthQuaker Devices Life Pedal Perfboard Verified 2N5087 · 2N5089 · BS170 · LM308 EarthQuaker Devices Life pedal · 1590BB | EarthQuaker Devices Life pedal | Boost | Effects Layouts (blog) | 1590BB | 5 | — | 42 | |
| Idiot Box Effects Blower Box Perfboard Verified J201 · LM308 · LM308N Idiot Box Effects Blower Box | Idiot Box Effects Blower Box | Distortion | Effects Layouts (blog) | — | 4 | — | 31 | |
| ProCo RAT ('86 version) Perfboard Verified 2N5458 · LM308 ProCo RAT | ProCo RAT | Distortion | Effects Layouts (blog) | — | 3 | — | 25 | |
| Roger Mayer Voodoo-Bass Perfboard Verified BC549C · LM308 · LM308N Roger Mayer Voodoo-Bass | Roger Mayer Voodoo-Bass | Distortion | Effects Layouts (blog) | — | 3 | — | 26 | |
| SMD RAT Perfboard Unverified LM308 · MMBF5458 SMD RAT | SMD RAT | Distortion | Effects Layouts (blog) | — | 3 | — | 34 | |
| Moog 952 Keyboard Controller 2N3904 · 2N3954 · 741 · LM308 | — | Ring Mod / Synth | Experimentalists Anonymous | — | 2 | — | 78 | |
| Oberheim Mini Sequencer 1458 · 2N3905 · 2N4302 · 2N5172 | — | Ring Mod / Synth | Experimentalists Anonymous | — | 1 | — | 154 | |
| Oberheim Mini-Sequencer 1458 · 2N3905 · 2N4302 · 2N5172 | — | Ring Mod / Synth | Experimentalists Anonymous | — | 1 | — | 169 | |
| Proco Rat 2N5458 · LM308 ProCo RAT | ProCo RAT | Distortion | Experimentalists Anonymous | — | 3 | — | 28 | |
| Proco Rat 2 BF245A · LM308 ProCo RAT 2 | ProCo RAT 2 | Distortion | Experimentalists Anonymous | — | — | — | 27 | |
| Proco Rat 3 2N5458 · LM308 ProCo RAT | ProCo RAT | Distortion | Experimentalists Anonymous | — | — | — | 23 | |
| Roger Mayer Voodoo-1 BC549C · LM308 · LM308N | — | Fuzz | Experimentalists Anonymous | — | 3 | — | 27 | |
| Rattus 2N5458 · LM308 ProCo RAT / RAT2 / You Dirty RAT / Turbo RAT | ProCo RAT / RAT2 / You Dirty RAT / Turbo RAT | Distortion | Five Cats Pedals | — | 3 | £4.50 | 33 | |
| The Rat King (Dual RATs with clipping toggles) 2N5458 · LM308 1590BB | — | Distortion | Five Cats Pedals | 1590BB | 3 | £5.00 | 37 | |
| 3-Band Rat LM308 / OP07 ProCo RAT · 1590B | ProCo RAT | Distortion | Fuzz Dog | 1590B | 5 | £36.00 | 36 | |
| FuzzPup Rat 2N5458 · LM308 · LM308N ProCo Turbo RAT · 1590A | ProCo Turbo RAT | Distortion | Fuzz Dog | 1590A | 3 | £33.60 | 28 | |
| Rodent Baxandall 2N5457 / J201 · LM308N / OP-07 ProCo RAT · 1590B | ProCo RAT | Distortion | Fuzz Dog | 1590B | 5 | £36.00 | 42 | |
| BlowBox J201/SMPJ201 · LM308 · LM308N Idiotbox Blower Box · 125B | Idiotbox Blower Box | Distortion | Griffin Effects | 125B | 4 | $11.00 | 46 | |
| LabRat 2N5458 · LM308 · LM308N ProCo RAT · 1590BB | ProCo RAT | Distortion | Griffin Effects | 1590BB | — | $9.00 | 34 | |
| Ratt Deluxe v4.5 2N5459 · LM308 | — | Distortion | GuitarPCB | — | 3 | $8.95 out | 37 | |
| Rat Distortion J112 · LM308 ProCo RAT · 1590B | ProCo RAT | Distortion | HotKits | 1590B | 4 | $7.00 | 29 | |
| Expandora 2N3906 · 4558 · JRC4558 · LM308 Bixonic Expandora | Bixonic Expandora | Distortion | JMK PCBs | — | 3 | $12.00 | 51 | |
| Alpha Dog 2N5458 · BS170 · LM308 Distortion · 1590B | Distortion | Distortion | Madbean | 1590B | 6 | — | 25 | |
| Dragon Hound 2N5458 · 2N5484 · BS170 · LM308 Parallel Overdrive & Distortion · 1590B | Parallel Overdrive & Distortion | Distortion | Madbean | 1590B | 2 | — | 49 | |
| Dragonbeard Jr 2N5087 · 4558 · LM308 Bixonic Expandora · 1590B | Bixonic Expandora | Distortion | Madbean | 1590B | 3 | $10.00 | 53 | |
| Lil Mouse 2N5458 OR 2N5457 · LM308 ProCo RAT | ProCo RAT | Distortion | Moody Sounds | — | 3 | kr695.00 out | 21 | |
| Mouse 2N5458 · LM308 ProCo RAT | ProCo RAT | Distortion | Moody Sounds | — | 4 | kr895.00 out | 29 | |
| Bratz 2N5457 · LM308 · LM308N ProCo RAT | ProCo RAT | Distortion | Moonn Electronics | — | 3 | €5.50 | 36 | |
| Sound Artillery 2N5457 · LM308 Caroline Wave Cannon | Caroline Wave Cannon | Fuzz | Moonn Electronics | — | 4 | €5.50 | 35 | |
| RAT 2N5457 · LM308 ProCo RAT · 1590B | ProCo RAT | Distortion | OP Electronics | 1590B | 3 | €1.50 out | 34 | |
| OmniRat 2N5457 · LM308 · LM308N Build all Rat versions in one pedal! | Build all Rat versions in one pedal! | Distortion | On The Road Effects | — | 3 | $10.00 | 39 | |
| Bionic Pandora 2N3906 · 4558 · JRC4558 · LM308 Bixonic Expandora · 125B | Bixonic Expandora | Distortion | PCB Guitar Mania | 125B | 3 | €11.90 out | 52 | |
| Death By Fuzz III 2N5088 · LM308 · LM308N Univox Super-Fuzz · 1590BB | Univox Super-Fuzz | Fuzz | PCB Guitar Mania | 1590BB | 4 | €14.90 out | 81 | |
| La Rata Multi-board 2N5457 · LM308 · LM308N ProCo RAT · 125B | ProCo RAT | Distortion | PCB Guitar Mania | 125B | 5 | €7.90 out | 36 | |
| Life Device (Compact Version) 2N3906 · 2N5089 · 2N5457 · BS170 EarthQuaker Devices Life pedal · 125B | EarthQuaker Devices Life pedal | Fuzz | PCB Guitar Mania | 125B | 5 | €11.90 out | 75 | |
| Life Device SMD 2N3906 · 2N5089 · 2N5457 · BS170 EarthQuaker Devices Life pedal · 125B | EarthQuaker Devices Life pedal | Fuzz | PCB Guitar Mania | 125B | 3 | €21.90 out | 31 | |
| Rat Distortion 2N5458 · LM308 ProCo RAT | ProCo RAT | Distortion | PCBWay: Glory to Ukraine | — | 3 | — | 28 | |
| Dingo Distortion 2N5458 · BS170 · LM308 · LM308N VFE Alpha Dog · 125B | VFE Alpha Dog | Fuzz | PedalPCB | 125B | 6 | $10.00 | 34 | |
| Frajeelay Distortion LM308 · LM308N · TL074 Oneder Effects Red Ryder Distortion · 125B | Oneder Effects Red Ryder Distortion | Fuzz | PedalPCB | 125B | 6 | $12.00 | 52 | |
| Muroidea Distortion 2N5458 · LM308 ProCo RAT · 125B | ProCo RAT | Distortion | PedalPCB | 125B | 3 | $8.00 | 32 | |
| Pandora’s Box 2N3906 · 4558 · H11F1 · JRC4558 Bixonic Expandora · 125B | Bixonic Expandora | Distortion | PedalPCB | 125B | 5 | $10.00 | 50 | |
| Parentheses Fuzz 2N5087 · 2N5089 · BS170 · LM308 EarthQuaker Devices Life pedal · 1590XX | EarthQuaker Devices Life pedal | Fuzz | PedalPCB | 1590XX | 6 | $18.00 | 79 | |
| Parentheses Mini Fuzz 2N5087 · 2N5089 · BS170 · LM308 EarthQuaker Devices Life pedal · 125B | EarthQuaker Devices Life pedal | Fuzz | PedalPCB | 125B | 6 | $12.00 | 76 | |
| ProCo The Rat (early version, 1986 trace) 2N5458 · LM308 · LM308N ProCo RAT | ProCo RAT | Distortion | Revolution Deux | — | 3 | — | 33 | |
| Northern Harrier Distortion 2N5458 · LM308 ProCo RAT · 125B | ProCo RAT | Distortion | RWL Pedals | 125B | 3 | — | 35 | |
| Bixonic Expandora Vero23×20 Unverified 4558 · H11F3 · LM308 · LM308N Bixonic Expandora | Bixonic Expandora | Distortion | Tagboard Effects | — | 4 | — | 39 | |
| Biyang Tonefancier BL-8 Blue Vero15×10 Unverified LM308 · LM308A Biyang Tonefancier BL-8 Blue | Biyang Tonefancier BL-8 Blue | Overdrive | Tagboard Effects | — | 2 | — | 15 | |
| Blakemore Effects R.O.U.S. Vero17×12 Verified 2N5457 · LM308 · LM308N Blakemore Effects R.O.U.S | Blakemore Effects R.O.U.S | Distortion | Tagboard Effects | — | 5 | — | 32 | |
| Giant Hogweed Vero31×22 Verified 2N3904 · 2N5088 · BS170 · LM308 Giant Hogweed | Giant Hogweed | Fuzz | Tagboard Effects | — | 6 | — | 54 | |
| Idiotbox Blowerbox Vero21×16 Verified J201 · LM308 Idiotbox Blower Box | Idiotbox Blower Box | Distortion | Tagboard Effects | — | 4 | — | 31 | |
| Landgraff MO'D Vero19×11 Verified 2N5457 · LM308 · LM308N Landgraff MO'D | Landgraff MO'D | Distortion | Tagboard Effects | — | 3 | — | 29 | |
| Paia 5730 Gator Vero Verified LM13700 · LM308 · TL074 Paia 5730 Gator | Paia 5730 Gator | Noise Gate | Tagboard Effects | — | 3 | — | 23 | |
| Peavey Hotfoot Distortion Vero20×15 Verified 2N5457 · LM308 Peavey Hotfoot Distortion | Peavey Hotfoot Distortion | Distortion | Tagboard Effects | — | 3 | — | 22 | |
| ProCo Solo Vero23×14 Unverified 2N5458 · LM308 ProCo Solo | ProCo Solo | Distortion | Tagboard Effects | — | 4 | — | 30 | |
| Proco Rat Vero20×11 Verified 2N5458 · LM308 ProCo RAT | ProCo RAT | Distortion | Tagboard Effects | — | 3 | — | 23 | |
| Proco Rat 2 Vero17×12 Verified 2N5457 · LM308 ProCo RAT 2 | ProCo RAT 2 | Distortion | Tagboard Effects | — | 3 | — | 26 | |
| Roger Mayer Mongoose Vero19×11 Verified 2N3904 · LM308 · LM308N Roger Mayer Mongoose | Roger Mayer Mongoose | Distortion | Tagboard Effects | — | 2 | — | 22 | |
| Roger Mayer Voodoo Bass Vero18×16 Verified BC549C · LM308 Roger Mayer Voodoo-Bass | Roger Mayer Voodoo-Bass | Distortion | Tagboard Effects | — | 3 | — | 27 | |
| Roger Mayer Voodoo-1 Vero18×16 Verified BC549C · LM308 Roger Mayer Voodoo 1 | Roger Mayer Voodoo 1 | Distortion | Tagboard Effects | — | 3 | — | 28 | |
| VFE Pedals Alpha Dog Vero21×15 Verified 2N5458 · BS170 · LM308 VFE Alpha Dog | VFE Alpha Dog | Distortion | Tagboard Effects | — | 6 | — | 27 | |
| VFE Pedals Dragon Hound Vero21×21 Verified 2134 · 2N5458 · 2N5484 · 7660S VFE Dragon Hound | VFE Dragon Hound | Distortion | Tagboard Effects | — | 6 | — | 34 | |
| Rat La Rata 2N5458 · LM308 ProCo RAT | ProCo RAT | Distortion | Tonepad | — | 3 | $11.00 | 21 | |
| Choose Your Own Ratventure 2N5458 · LM308 · LM308N ProCo RAT | ProCo RAT | Distortion | Zero G IOD | — | 3 | $5.00 out | 37 |