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Jet City 20H/HV Mods

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Mods for the 20H and 20HV

Nayked - NEW!: High gain Marshall style amp with a modern flavor. Originally designed for A P@rfect Circle guitarist Billy H@werdel. Crushing and beautiful. Difficulty: Intermediate

F*rtin Cali - NEW!: Pure high gain modded madness! It chugs. It shreds. It rips. No pedal necessary. Just plug straight in and destroy. Difficulty: Intermediate

F*rtin M*shuggah - NEW!: The perfect "Machine of Torture." Heavy AF. Articulate. Brutal. But also beautiful. Difficulty: Intermediate

Octal-pus: Love the sound of your amp, but wish it had 6L6's or 6V6's? Well, now it can! Change out those little power tube sockets for Octal sockets and run your choice of tubes, including 6V6, 6L6, 5881, or EL34's. Difficulty: Intermediate

Club 40 Clean: Another legendary amp based on a JTM 50 Bass amplifier. Touch responsive, chimey, warm, chewy, and 3D... You thought I started talking about hot chocolate chip cookies, but no. I'm talking about thick, luscious clean and blues tone to die for. Difficulty: Intermediate

Power Supply Upgrade: The power supply is the heart of your amp. A poorly functioning supply can add noise, hum, fail sooner than you'd expect, and just generally be a major bummer. Make your supply bullet-proof, lower your amp's noise floor, reduce hiss and hum, and add longevity. Difficulty: Intermediate

JJ OD: Signature Overdrive channel of the legendary AIC guitarist. Heavy, articulate, and gainy. Difficulty: Advanced

Killer Plexi: The real deal. Get all that vintage goodness in your crunch channel. From chimey, Hendrixy clean tones to Brown Sound and all the classic rock and blues you can handle. A veritable encyclopedia of tones in a single expressive, dynamic channel. Difficulty: Intermediate

Killer JTM45: Chime and warmth abound in this historically killer mod. Keep it clean for some of the most gorgeous cleans ever, or crank the gain for supremely bluesy crunch. Early Clapton, Angus, and more all earned their paychecks with JTM45. Difficulty: Intermediate

J-Wreck: One of the most iconic tones in the history of rock, custom tailored for one of the most ripping country players of all time. From pristine, punchy cleans, to gorgeous, harmonic crunch, to sweet, sustaining leads, the J-cuts like a knife (but it feels so right). Demo Video: Difficulty: Intermediate

2nd Channel: A complete 2nd channel for your 20H or 20HV. Adds gain, tone controls, a 2nd master volume, and makes it all super-duper foot-switchable. Because two is twice as much as one! Foot-switch included. Difficulty: You're crazy (like a fox)

Brown Iris Px: Signature model variation of the BI. Complete with low gain switch and V+/- switches. Have a kick-ass day! Difficulty: Advanced

Cap'n Crunch: Modeled after a famous rental amp with an appetite for destruction, the Cap'n Crunch adds iconic #34 flavored overdrive with incredible playability and versatility. Switchable option adds a great lower gain plexi voice to your crunch channel. Two epic tones, one switch. Rock on! Video Clip: Difficulty: Intermediate

Brown Iris: Turn your 20HV into a true Jose/Fr---man style gain machine. Difficulty: Intermediate

Sextasy Blue: High gain Lead and Crunch channels from the 101B. Difficulty: Advanced

Diva Crunch: Amazing high gain channel from yet another legendary B*gner amplifier. Difficulty: Advanced

800 Mod - Std: Faithful recreation of the gain and tonal response of one this iconic British amp. Difficulty: Advanced

Ultimate Clean: Re-structure the signal path for more clean headroom and snappy, responsive clean tones. Great as a pedal platform! Difficulty: Intermediate

Super-Ultimate Clean: Same mod as the Ultimate Clean, but switchable between the stock and modded circuit. Difficulty: Intermediate

Capacitor Upgrade: One of the best mods we sell. increases the tonal complexity and richness of your tone. Much more 3d and musical. Difficulty: Intermediate

FX Loop Upgrade: Add a killer sounding loop to your 20H, or upgrade your 20HV loop. More headroom, more transparent. Fantastic sounding loop with a parallel/serial switch and blend control for running in parallel mode. Compact design, bolts right into the existing 20HV holes. Difficulty : Beginner

External Bias: Install external test points and adjustment pot and never open your head to bias again. Or, bias every single session. It's now that easy. Difficulty: Intermediate

Depth: Add adjustable, resonant thump to your low end. Difficulty: Beginner

Hi-Cut Control: One of the most useful mods you can do! Tailor the exact high end response of your power section to your liking. Shave off the shards of ice while keeping your high end clear and snappy. Difficulty: Beginner

Negative Feedback Control: Another extremely useful mod. Change the overall tone and feel from a more vintage feel to tight and modern. Difficulty: Beginner

Mid Sweep Control - NEW!: Tone-tweaks rejoice, for you have been saved! Dial in tonal perfection with a nearly infinite array of tonal possibilities. Women will want to be with you and men will want to be you. Power and glory are within your grasp! Difficulty: Beginner

Solo Boost - NEW!: Add a fixed, foot-switchable solo boost to your amp! Includes foot-switch. Difficulty: Intermediate

Saturation Switch: Injects diode clipping into the preamp circuit for additional overdrive and harmonic content (similar to a tube screamer in front of the amp, but it responds a bit more naturally due to the fact that it’s integrated into the circuit). A very cool option that works extremely well with the 800 mod. Difficulty: Beginner

Trainwreck Global Master: Cranked amp tone at any volume. Installed after the phase inverter, so you can crank your stock master wide open for natural PI compression and sustain, but at bedroom volume levels. Difficulty: Beginner

Extra Mojo: Not a mod. This is just an item I use for creative problem solving, off-menu items, etc. But feel free to buy us a coffee, though. We love Coffee. Mmmmmm... Coffeeeee. 🤓

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