Dear Amp Man,
Please write a column about the Pignose G40V. I have not
used mine in five years, so I’m curious what’s necessary to
get it up and running. Also, please discuss any mods, like a
standby switch or speaker/line out. I have replaced the factory
speaker with an Eminence Legend. Also, what are your
thoughts on converting the G40V to a head, since its cabinet
is so small? Thanks!
—John Mitchell, Escondido, CA
Hi John,
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An amp that has been sitting this long is more than likely going to need a bit of electrical cleaning. You’ll need to invest in a couple of cans of electronic cleaner—one with lubricant and one without. Clean the input jack and the pots with the lubricant cleaner. Clean the tube sockets with cleaner only. Due to limited space, I won’t go into cleaning details right now, but I’m sure you can find instructions online if you need them.
Also, as a general practice, many techs recommend that you “reform” the electrolytic capacitors in an amplifier that has been unused for years. While I don’t believe that’s necessary for an amp that’s been idle for only five years, if you have the ability to do this, it certainly wouldn’t hurt.
Warning: Working inside an amp is very dangerous—it can even be lethal. So if you are not familiar with the inner workings of a tube amplifier and the possible hazards involved, please have this work performed by someone who is.
To do this, remove all the tubes and connect the amp to a Variac or similar variable line-voltage device. With the Variac set to zero volts, turn the amp on. If you have the ability to measure the B+ (high) voltage in the amp, attach your negative meter lead to a good chassis ground point and connect the positive lead to the center-tap lead of the output transformer.
From here, you’ll be able to measure the B+ immediately after the rectifier circuit. Turn the Variac on and slowly raise the level until you measure approximately 50 volts at this point. If you do not have the ability to measure internal voltages, this would more than likely be a setting of 10 to 15 volts on the Variac. From this point on, there really aren’t any particular “correct” intervals between increasing the setting, but every 10 minutes or so, raise the Variac approximately 10 volts. Do this until the Variac setting reaches 100 volts. You can then lower the Variac to zero and turn off and disconnect the amp. This process should have raised the caps to near their maximum voltage ratings.
Why didn’t we raise the Variac to the full 120V AC line level? With no tubes in the amp, there is no load on the power supply. With no load on the supply, the supply output voltage becomes substantially higher and would stand a good chance of over-voltaging the filter caps. If this happens, the caps can explode. Confetti everywhere! It looks like someone just had a New Year’s Eve party inside your amp—not good.
If all is well with the amp, at this point you should have a functioning G40V. Now we can move on to the extras.
You mentioned adding a standby switch, and I think that’s a good idea. Vacuum tubes should be at operating temperature prior to having high voltage applied to them, and I’m sure its omission on this amp was purely a price-point issue.
But you can install one, and here’s the most effective way I see to do this. Locate the two red leads attached to the power supply circuit board that come from the mains transformer. Disconnect both leads from the circuit board. Install a good quality DPST (double-pole/single-throw) switch of your choosing on the front panel next to the power switch. Connect these two red leads to a left and right set of terminals on the switch. From the other left and right set of terminals on the switch back, run a new pair of wires to the initial circuit-board connections. You now have a standby switch to save those tubes.
You also asked about converting the G40V to a head, since the cabinet was so small. Personally, I wouldn’t do it. Being that the amp is not much bigger than a large amp head anyway, why give up the option of having a portable, self-contained combo amp for rehearsals or small gigs? To play larger venues, all you need to do is unplug the internal speaker and connect the amp to a 2x12 or 4x12 cabinet—in essence, using the G40V as a head. You currently have the best of both worlds, in my opinion.
Next month, I’ll talk about adding a line out and discuss a few more possible modifications. Until then, keep dreaming about playing that cool little piggy!
Jeff Bober is one of
the godfathers of the
low-wattage amp revolution,
co-founded and was
the principal designer for
Budda Amplification. Jeff recently launched EAST
Amplification, and he can be reached at
pgampman@gmail.com.
Ibanez TS808HWv2 Tube Screamer Overdrive Pro Pedal
Ibanez has taken the iconic Tube Screamer and pushed it further by re-envisioning their flagship, hand-wired model. The company evaluated every component while aiming to stay true to the pedal’s transparent and mid-range-focused tone. After numerous prototypes, it was concluded the JRC NJM4558 op-amp was essential to achieve the Tube Screamer’s legendary sound. At the same time, this new design is capable of a wider range of sounds thanks to the addition of high-end components such as MOGAMI OFC cables, which further enhance the benefits of a hand-wired pedal. Additionally, a boost has been added to the final stage of the circuit, increasing the maximum output level by +6dB. Its look has also been revamped, giving it a high-end appearance while retaining the traditional shape.
The high priest of prog-metal guitar, John Petrucci, is still finding new territory on his instrument.
The news of Portnoy’s reunion with Dream Theater rocked the metal world. Over the years, whiffs of acrimony and hurt feelings suggested Portnoy’s return to the band might be a pipe dream. But in October 2023, the band revealed that they had all independently reconciled with Portnoy, a process that culminated backstage at New York’s Beacon Theater in 2022. Portnoy attended Dream Theater’s show at the venue and met up with the band afterward. It was the first time he’d seen vocalist James Labrie in 10 years. Within seconds, 13 years melted away in the warmth of camaraderie.
“The gear was all set up and we sat there and started playing. It was magic. It was like we never missed a beat.”
A few months after the announcement of Portnoy’s return, he and bandmates Labrie, Petrucci, bassist John Myung, and keyboardist Jordan Rudess convened at the recently renovated Dream Theater HQ, their longtime creative hideout and recording studio in Long Island, to begin to create new music. Petrucci, speaking over the phone from Brazil during Dream Theater’s December 2024 tour, remembers that period fondly. “From the moment that we all stepped in the studio in February, the gear was all set up and we sat there and started playing,” he says. “It was magic. It was like we never missed a beat.”
After shaking off the cobwebs, the first song they wrote together was “Night Terror”—“if that gives you any indication of the energy and vibe and mood that we were in,” quips Petrucci. It’s heavy, riffy, aggressive, and progressive, a capsule of 13 years in just shy of 10 minutes. “We let that all out in the first couple of weeks of just being together,” Petrucci continues. “It was wonderful and the creative juices just flowed the way they always did. There was great brotherly chemistry between all of us.”
Last year, Dream Theater celebrated their ruby anniversary as a band. Four decades on, they’re still exploring the dark corners of what happens when we sleep.
The band continued to create together as they’d always done. They had some concrete ideas: They wanted to make a concept album, and it had to be heavy and riff-centric. Petrucci, who produced the record, was intrigued by parasomnia, a medical concept which refers broadly to any unusual sleep pattern, like sleepwalking, nightmares, insomnia, sleep paralysis, and more. He hadn’t experienced those nocturnal issues (the worst he deals with is snoring), but he began deep research into them. A path had opened up. “That creative part of me just wakes up, and then that turns into it also being musically creative, lyrically creative, visually creative,” says Petrucci.
This is how Parasomnia, Dream Theater’s 16th studio record, came to exist. Engineered and mixed by Andy Sneap, the concept album comprises a collection of suites and vignettes that center on various sleep disturbances, opening with “In the Arms of Morpheus,” a slowly building soundscape that sets the scene for all that follows. It soundtracks someone getting ready for bed and falling asleep, and just as they’re drifting into a dreamstate, a musical theme starts to creep in. It heightens and gets weird before exploding into the full chaos that gives way to “Night Terror,” the nine-minute-plus epic. Petrucci’s playing on this song alone is staggering: There’s the classic, open-string beginner riff, then vintage, hyper, ’80s-metal single-note melody work, then a truly brain-melting, lightning-fast solo that leaves your jaw open.
True to Dream Theater lineage, there are pieces of the record that feel ready to soundtrack alien drag races on Mars next to swanky sections of jazzy, hard-rocking funk-blues, like on “A Broken Man.” Petrucci slips in and out of modes and scales like a chameleon changing its colors, each sounding as lived-in and natural as the last. His fingers just seem to know where to go. His only reprieve is the funereal interlude “Are We Dreaming?” which prepares us for the power ballad “Bend the Clock” and the devastating, scorched earth closer: “The Shadow Man Incident.”
Parasomnia is Dream Theater’s 16th studio record, and their first since reuniting with founding drummer Mike Portnoy.
“It’s wacky,” says Petrucci about the phenomena behind that song’s title. If you’re not familiar, “the shadow man” is a colloquial name given to a figure that appears during some episodes of sleep paralysis. People around the world have reported a similar apparition visiting them while they’re experiencing sleep paralysis—but there’s no scientific consensus for what causes the similar visions.
“There’s something in the human brain that is unaccounted for or whatever that must be producing that, that repeated experience,” continues Petrucci. “You start doing all this research and going down rabbit holes online. You’re like, ‘Wow, for centuries, in every culture and civilization, the same thing has been happening. What is this?’ It definitely explores the depths of the human mind, but it reminds me of any sort of topic that holds your interest in a weird way, like UFOs. A song like ‘The Shadow Man Incident’ is a long, epic piece of music that gives you the backdrop and license to go into storytelling more.”
The goal was to take that storytelling beyond the normal confines of an LP—or, at least, what we think of as an LP in the streaming age. “What we decided to do was to make the album kind of like a Dark Side of the Moon listening experience,” explains Petrucci. “Our hope is that people will get this record, turn down the lights, get together with some friends for a drink or whatever you do, and just listen to the whole thing like you’re watching a movie. It’s supposed to be an experience.”Petrucci even studied the music of composers like John Williams to get a bead on how to create epic, cinematic feelings in music. He displayed his research to his bandmates in the form of creative direction for certain songs, likening the process to scoring a film. “The album or song topic presents certain imagery, and you want the music to match that imagery, so you have those tools in your toolbox, like, ‘Okay, I know what kind of chord movement or chordal sounds or modal things I can do that are going to make that,’ and it’s going to create that flavor as opposed to just going in and writing in the typical way that you would if you didn’t have that knowledge ahead of time.”
“With Mike rejoining the band, I wanted to lean into the nostalgic aspect in some of the recording process.”
A part of that soundscaping is what Petrucci describes as “ear candy”: spoken-word passages, or sound effects like clocks ticking and alarms ringing. These elements help build a more profound, immersive listen, but they only work if the songs are good, says Petrucci. “You can have all these sound connections and overdubs and voices, but if the songs suck, it’s not going to mean anything. No one’s going to want to listen to it.”
Knowing that the record would deal with all things eerie and creepy, Petrucci wanted to explore what types of tonalities could unsettle the listening experience. “For ‘Night Terror,’ I use the super Phrygian mode, which is like a mode of the Hungarian minor which has a very unresolved sound that creates a lot of tension,” he says. He also experimented with constructs like the Prometheus and Tristan chords. “That gives you that dreamy weird thing you hear in ‘In the Arms of Morpheus.’ That first 8-string chord is this crazy chord of all tritones that just makes it sound like you’re in a nightmare right away.”
Petrucci, pictured here shredding in November 1994, broke out plenty of classic gear for the recording of Parasomnia to mark the reunion with Portnoy.
Photo by Frank White
Petrucci called on a range of tools old and new to bring Parasomnia to life. “With Mike rejoining the band, I wanted to lean into the nostalgic aspect in some of the recording process,” he explains. He used his 6-, 7-, and 8-string Ernie Ball Music Man Majesty guitars, in a spread of different tunings. He used his Mesa/Boogie JP-2C on everything except the record’s solos. For those, he busted out his old Mesas—a Mark III, IV, and IIC+ among them—for a shootout and wound up choosing the IIC+ that he used on old Dream Theater records (plus his own solo release, Suspended Animation). A Roland Jazz Chorus even clocked in for some cleans—a page Petrucci took from James Hetfield’s book.
The nostalgia didn’t end there. The band reached out to recording engineer Doug Oberkircher, who engineered all of the band’s records from 1992’s Images and Words through 2003’s Train of Thought, to purchase the Neve preamp used on those albums. All the guitars on Parasomnia were recorded through that preamp.
In many ways, a production this grand and intricate is familiar territory for the band. Petrucci and Dream Theater obviously have a penchant for art that is narrative, theatrical, and grand. But Parasomnia is specially weighted with circumstance and time.John Petrucci's Gear
Petrucci and Dream Theater have managed an incredible feat: They’re just as excited about their music now as they were when they were teenagers.
Photo by Ekaterina Gorbacheva
Guitars
- Various Ernie Ball Music Man The Majesty 6-, 7-, and 8-string guitars with DiMarzio Dreamcatcher and Rainmaker pickups
Amps
- Mesa/Boogie JP-2C (rhythm parts)
- Vintage Mesa/Boogie Mark II C+ Simul-Class (lead parts)
- Roland JC-120 (clean parts)
- Mesa/Boogie 4x12 Rectifier Traditional Straight cabinet
Effects
- MXR Bass Compressor
- Boss CE-2W
- Boss DC-2W
- TC Electronic Dreamscape
- TC Electronic TC 2290
- TC Electronic Corona Chorus+
- MXR Stereo Chorus
- Keeley Blues Disorder
- Dunlop JP95 John Petrucci Signature Cry Baby Wah
- MXR Custom Audio Electronics MC403 Power System
Recording
- Neve 1093 Pre/EQ
- API 3124MV
- Solid State Logic PURE DRIVE OCTO
- sE Electronics VR2 + Mojave Audio MA-D (rhythm parts)
- sE Electronics SE4400a + Royer Labs R-121 (lead parts)
- Royer Labs R-121 in stereo (clean parts)
- sE Electronics RNR1 (mid room)
- sE Electronics RNT in OMNI (far room)
- Waves H-Delay Analog Delay Plugin
- Soundtoys EchoBoy
- Soundtoys MicroShift
- Soundtoys Crystallizer
- D16 Group Audio Software Repeater
- Valhalla DSP VintageVerb Plugin
- Valhalla DSP ValhallaRoom Reverb Plugin
- Radial ProRMP
- Radial J48
- EBow
Strings & Picks
- John Petrucci signature Dunlops
- Ernie Ball .10 gauge electric sets
“John Myung and I met when we were in middle school, so we were like 12, and I remember everything about us playing together, going over to each other’s houses after school and playing every Iron Maiden song there ever was, going to Berklee and meeting Mike when we were 18, forming the band,” says Petrucci. “Here we are, it’s 40 years later. How the hell does that happen? But the great thing is to still be playing with my brothers and my buddies, and still making music together that we’re just as excited about as we were when we were 18. It’s all we ever wanted to do.”
All of this history isn’t just window dressing. It comes out in Petrucci’s playing, too: It’s all one, long story. “By the time I was 16 or 17, I had a handle on the kind of style of player I wanted to be, and those original elements are still there and will always be there,” says Petrucci. “But now, 40 years later, there’s still new things coming in. Even on the new album, there’s things I never did before. We’re playing these shows and I’m trying to master this stuff live in front of an audience and see if I can pull it off under pressure. The challenge of it is just as much as it was when I was a teenager. I love it.
“It’s a continuing experiment,” Petrucci continues. “As you develop new techniques and go down new roads of playing, all of a sudden you realize you abandoned some older techniques, then you go back and rediscover those things, and through the process of rediscovering the old things you used to do, all of a sudden you could do some stuff that you never were able to do before. It’s like something that’s living. It’s a living experiment of guitar playing. It’s just forever inspiring.”
YouTube It
Last year marked Dream Theater’s 40th anniversary as a band, and the official Dream Theater fan club caught up with the group before their gig in Oslo to see how they brought the milestone tour to life.
