ao link
Filter content by area of interest
Amps
Boost and Overdrive
Delay
Distortion
Fuzz
Guitars
Modulation
Pitch
Reverb
Utility
All
All
2025-GPX-JHS-x-EHX-Big-Muff-2-700.jpg

So back in the 70’s EHX’s Mike Matthews commissioned both Howard Davis and Bob Myer to make the next generation of Big Muff - using the newly release OpAmps / IC’s rather than the individual quartet of Transistors. Each engineer came up with their own version - and Mike picked out the Howard Davis one for production - which then became the 1978 EHX OpAmp Big Muff.

 

Meanwhile Bob Myer’s version sat abandoned and forgotten in the mist of time - until Josh Scott and Daniel Danger came upon it ...

Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions

2025 Best of the Best Pedals of the year

Best in ClassBlind Panic DevicesBlue ColanderBlue FX DevicesBoost and OverdriveBossBrelliottChase Bliss AudioColortone PedalsCoriolis EffectsCornerstone Music GearCrazy Tube CircuitsDelayDistortionFjord FuzzFlattley Guitar PedalsFortin AmpsFuzzGamechanger AudioGreat Eastern FX Co.Hangman fxJHS PedalsKernomKrozz DevicesModulationMuir Audio DesignMXRPastFXRedbeard EffectsReverbSinvertekSolar PedalsSoundLad LiverpoolTeaching MachinesThorpyFXTubesteaderWampler+-
2025-GPX-Best-of-the-Best-BBX-700.jpg

And here we have the GRAND FINAL- with all 36 Award Winners from the Group Stages - across all 5 categories!

 

The first two places have kind of been obvious for a while, where the 3rd / BRONZE position was actually the hardest to decide on - it was between the eventual recipient - the Tubesteader Gainlord, Boss’s XS-100 Poly Shifter, Blue FX Devices Fuzz Fields and Gamechanger’s Motor Synth - all of whom would have been worthy runners-up - while in the end I went for the one that overall ...

Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions

2025 Best New Boost and Overdrive Pedals of the Year

AudiostormBest in ClassBlammo ElectronicsBoostBoost and OverdriveBrelliottCatastro FXChase Bliss AudioCrazy Tube CircuitsDr. No EffectsDriveDrunk BeaverFlatley Guitar PedalsGigaheartsHangman fxHello Sailor EffectsJHS PedalsLichtlaerm AudioMad Professor EffectsMXROrigin EffectsOverdrivePaul CochraneReeves Electro Guitar PedalsREVV AmplificationRhPf ElectronicsRogue RehousingSoundLad LiverpoolThorpyFXTubesteaderTWA EffectsWalrus AudioXotic Effects+-
2025-GPX-Best-New-Overdrives-V2-700.jpg

36 outstanding Boost and Overdrive pedals  featured here in various sizes - 35 of which are already in the reference collection - with the Superlunar SR-01 the last remaining straggler!

 

The rules of the game are that I can only finally recommend pedals that I own and have lived with, while I can also feature a few other intended targets in the overview which I fully intend to acquire (like the Superlunar SR-01) - but those can’t feature in the final rankings. So there is only one remaining ...

Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions

2025 November Pedal-Chain Update - Episode XI - Double Decked

Analog DelayBig Muff Style FuzzBoostBoost and OverdriveChorus and VibratoCompressorDelayDigital DelayDistortionDriveDrunk BeaverElectronic Audio ExperimentsEmpty Head EffectsFlattley Guitar PedalsFuzzFuzz Face Style FuzzFuzz-Drive and FuzzstortionGermanium FuzzGreat Eastern FX Co.Intensive Care AudioJHS PedalsLo-Fi DelayManson Guitar WorksMarshall Style DistortionModulationModulation WorkstationMoose ElectronicsMuir Audio DesignMulti-DriveMulti-FXMulti-GainOctave FuzzOpAmp FuzzOverdrivePasta PedalsPastFXPedal ChainPoly EffectsRat Style FuzzRitual DevicesSilicon FuzzSinvertekSpaceman EffectsThorpyFXTremoloTubescreamer Style OverdriveTWA EffectsTweed Style OverdriveUtility+-
2025-November-GPX-Pedal-Chain-700.jpg

Another super busy month for me - particularly towards the end - with numerous large scale articles out this week. That also coincided with my busiest week of the year for my other day job. Meaning that I was up until 4-5 in the morning every day - just to keep up with my commitments.

I was already somewhat shattered and burned out before I even got to this super busy period - and it’s a relief that all that work has now been completed on schedule.

I’m especially proud of my work on the Bucket ...

Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions

JHS Pedals 'Fixes' its Expandora take, with a new and much improved Kilt 10 Anniversary Edition in shiny polished aluminium!

BoostBoost and OverdriveDistortionDriveDual-DriveFuzzJHS PedalsMulti-DriveMulti-GainOverdrive+-
2025-JHS-Kilt-10-and-Remote-V2-700.jpg

Interestingly - the original compact JHS Kilt has typically been my least favourite Expandora take. To me it was somewhat cold and dense - and not nearly bright enough or sufficiently expressive. I hate brining in the wet blanket analogy once more - but that was my experience of the original take. Your typical Expandora’s tend to be quite more vibrant than JHS’s original take.

And it’s almost as if someone read my critique - because all my then niggles have been addressed in this new version. It...

Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions

4 of a Kind - Tascam 424 Portastudio style Preamps

4 of a KindBenson AmpsBoostBoost and OverdriveFuzzJHS PedalsMXNHLT EffectsNeutrino Labs MXOverdrivePreAmp+-
2025-GPX-Tascam-424-Portastudio-Preamp-700.jpg

I seem to have had a number of conversations recently - about Mk.gee and his use of the Tascam 424 Portastudio Tape Recorder as a sort of signature ’Amp’. Which seems to have triggered a somewhat gold-rush from a number of brands - majors and minors alike.

 

I thought it would be good to roundup a selection of these - which includes mainstream brands JHS and Benson, alongside a couple of independents - MXNHL and Neutrino Labs MX. Three of those brands are American, and one is Mexican.

 

JHS...

Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions

JHS Collaborates with Jack White's Third Man Hardware for Signature Troika Mic Delay

DelayDigital DelayJack WhiteJHS PedalsPreAmpThird Man Hardware+-
2025-GPX-JHS-Third-Man-Troika-Mix-Dealy-700.jpg

This was a strange one for me - not that JHS and Jack White collaborated on a Mic Delay - with Mic Preamp and Balanced XLR Out. But the fact that the vast majority of demos use this as a standard stompbox / pedalboard delay. If I were Black Mountain - who just recently had the Jack White Roto Echo Delay out - in their shoes I would be a little peeved.

 

As the JHS one - which is principally designed for Jack WHite’s Microphone - is more being promoted as a general delay - in direct ...

Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions

2025 September Pedal-Chain Update - Episode IX - 55-Part Lunacy!

Analog DelayBecos FXBlack MountainBlue FX DevicesBoostBoost and OverdriveBossBrown Sound DistortionCompressorDelayDigital DelayDistortionDown-TunerDrunk BeaverFjord FuzzFortin AmpsFuzzFuzz-Drive and FuzzstortionGated and Velcro FuzzHarmonic OverdriveHarmonizerIK MultimediaJHS PedalsKlone and Transparent OverdriveMarshall Style DistortionMetal DistortionMI AudioMI EffectsModulated FuzzMoVallOctave FuzzOctaverOddball FuzzOpAmp FuzzOrigin EffectsOscillating FuzzPedal ChainPitchPitch-ShiftingPreAmpReverbREVV AmplificationRhPf ElectronicsSilicon FuzzSpring ReverbThorpyFXTone Bender Style FuzzToneXUtilityWampler+-
2025-Septemner-GPX-Pedal-Chain-700.jpg

Another super busy month - where the lack of a holiday is really starting to impact my wellbeing - as I’m about as shattered and burned out as is possible without going entirely into meltdown - I’m teetering on the edge!

 

Here follow the highlights of the month - which I normally try to limit to around 10 elements - but stand at 12 for September. No show or onside attendances this month - while plenty of other activities - and some killer releases of course!

  • Jo Quail @ the Roland Store,
...
Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions

2025-GPX-JHS-424-Gain-Stage-700.jpg

It’s evident that Josh Scott has been much impacted by the sounds of the fast-rising Mk.gee - whose recent Two Star & the Dream Police Album was largely based on the sounds Mk.gee was able to extract from that Tascam 424 Portastudio device.

 

Interestingly my good friend Marc at Tark Audio did a similar exercise with his Tark 144 - which was based on the earlier Tascam 144 Casette Portastudio - and is also excellent!

 

And albeit this 424 Gain Stage is based on a different source device - ...

Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions

TREBLEDÜMBLË - Original JHS NOTADÜMBLË Edition, Cosmodio NOTADÜMBLË Mods, and Blammo Compact Deluxe TNYDÜMBLË Remake!

Blammo ElectronicsBoostBoost and OverdriveCosmodio InstrumentsDumble Style OverdriveJHS PedalsOverdrive+-
2025-GPX-Blammo-Tiny-Dumble-700.jpg

It’s been a while now since the NOTADÜMBLË was retired - owing to a mistake that was made in the core production run - where somehow the schematics for the rare BBC-1 Dumble Boost got mixed up with the better known ’A Box Later’ boost - in fact both used by John Mayer, but the ’A Box Later’ Boost was supposed to be the one on the pedal - and instead we go the rarer BBC-1 - which is equally excellent, and I still really like - to the extent that I’m not in the slightest bit bothered that the BBC...

Stefan KarlssonPopularCommentsRSS FeedContent Subscriptions
Profile
Stefan Karlsson
Stefan Karlsson
Guitar Pedal X
News Navigation






















































Cyril Demaegd
2025 Best New Modulation, Pitch, Utility and Multi-FX Pedals of the Year
"The bass synth really catched my eye this year. I "...
3 days ago
Stefan Karlsson
2025 Best New Fuzz Pedals of the Year
"This year is the best for Fuzz to date for me - "...
3 days ago
Paul Smith
2025 Best New Fuzz Pedals of the Year
"2023 was a great year for fuzz. Do you think this "...
3 days ago
Jared Brooks
Also Engineered by Thorpy!
"My Manson SMBF finally arrived (they oversold the "...
4 days ago
Waiting