Stuart Duncan, Viktor Krauss, and JD McPherson from the Raise the Roof touring band raise the curtain on their road gear.
Fourteen years after their Grammy-winning debut, Raising Sand, Robert Plant and Alison Krauss followed up with Raise the Roof—which was nominated for three more Grammys. Now on tour, the duo also has a new band that includes bassist Viktor Krauss, guitarist JD McPherson, and utility player Stuart Duncan. But before they hit the road, Krause, Duncan, and McPherson—and their techs Paul Ackling and Kevin Devogel— invited the PG team to a rehearsal at Soundcheck Nashville for a look behind the gear curtain. Here’s a sampling of what our team of John Bohlinger, Chris Kies, and Perry Bean saw. Watch the Rundown for the whole picture.
Brought to you by D’Addario XPND Pedalboard.
Fender Bender
This Fender Squier Telecaster—property of Stuart Duncan—has a palm bender for a steel-like effect, and wears Ernie Ball M Steel 2915s, gauged .010–.052.
Brown Silver
Duncan’s vintage Silvertone is strung with Ernie Ball Power Slinky nickelwound 2220 strings, gauged .011–.048.
Lil’ Git
Stuart’s Yamaha Guitalele uses Ernie Ball Ernesto Palla 2403 classical-style guitar strings. Also in his acoustic line-up is a Gibson J-45 and a Martin D-28, which both take Ernie Ball Earthwood phosphor bronze strings.
The Giraffe
This Gibson long-neck banjo uses Ernie Ball 5-string Banjo Frailing strings gauged at .010–.024, with loop ends.
Resophonic Rouser
Duncan’s Gold Tone Paul Beard Signature Series Resonator wears Ernie Ball bronze-alloy Earthwood light acoustic strings.
“Little” Amp, Big Sound
Duncan tours with a Little Walter 50 tube amp and a matched 2x12.
Stuart Duncan's Pedalboard
This comparatively stripped board does the job for Duncan. It’s got two Boss TU-3 tuners, an IndyGuitarist Effects custom OD, a Carl Martin TremO’vibe, and a Benado multi-effects with a Steel-Verb, Echo-Zen delay, and NutraDrive OD.
Tone Tools
Victor Krauss has a distinctive sonic setup, since he covers both bass and guitar in the band. One of his main instruments is this 1967 Galanti Grand Prix.
Twin
All of Krauss’ electrics, gets pumped into an Orange OR50.
Towers
And a Yamaha RA-200R rotating speaker cabinet driven by a Groove Tubes GT Trio preamp.
Meet the
Here’s Krauss’ stock 1964 Gibson SG Standard.
Solid Guitars
He also plays a high-mileage 1961 Gibson Les Paul—a double-cutaway from the era before this body design became tagged as the SG.
Get Shorty!
This ’60s Vox Octave 12—a short-scale instrument also called a mando-guitar—has been modified to a 6 string.
Dano Dancer
Among his other vintage instruments is a 1957 Danelectro UB-2 6-string bass that’s still stock.
Twang Thang
One of the few new axes in his arsenal is this 2022 Gretsch Duane Eddy Bass VI.
The Organic
For acoustic, Kraus chases two options: this 1943 Gibson LG-2.
Fantastics
And the other is a velvety 1953 Martin 0-18.
Viktor Krauss' Pedalboard
From his hands and instruments’ strings, the signal goes to a Boss TU-3W tuner, an Xotic EP Booster, a Guyatone ST2 compressor, another EP Booster, a Boss LS-2 Line Selector (with a send/return to an EHX Pitch Fork and a Danelectro Back Talk), a Nobles ODR-1, a Mostortion MT10, a Boss NS-2 Noise Suppressor, a Klon KTR, a Game Changer Audio Plus Sustain (controlling a Boss RE-2 Space Echo), a Fulltone Supa-Trem2, a Strymon Volante, a Hologram Microcosm Granular Looper & Glitch pedal, a Line 6 DL4 MkII delay, a Strymon blueSky, and an Ernie Ball volume pedal for the Yamaha RA-200R, another Strymon blueSky, and a Demeter VTDB-2B Tube DI for the Danelectro.
Pink Panther
This Fender Jazzmaster features some custom work by guitar maker TK Smith and the Fender Custom Shop. All JD’s guitars are strung with D’Addarios.
Flex-Able Flyer
This Supro Dual Tone stays dropped down a half-step.
This custom TK Smith 6-string has long been one of McPherson’s favorites. Groove on those pickup covers and that whammy bar!
The Rest of the Best
The remaining gunslingers in McPherson's holster including a Fender Custom Shop Tele, a Gretsch G6134T-58 Vintage Select '58 Penguin with Bigsby, and a pair of TK Smith creations (right side)
Amp Trinity
McPherson plays through a Fender tweed Pro-Amp reissue and a ’68 Vibrolux, while a Texotica Presidio 15 hangs in as a backup, but gets used as his main sound source when he does his own opening set.
JD McPherson's Pedalboard
McPherson runs his guitars into a D’Addario tuner. From there, the signal hits an Echoplex preamp, a Fender ’65 Deluxe pedal, a Crowther Hot Cake, a Way Huge Havelina Fuzz, a Tsakalis AudioWorks Six, an MXR Tremolo, a Fender MTG Tube tremolo, an Echoplex delay, an EHX Stereo Memory Man with Hazarai, and a Dr. Scientist Reverberator and Reverberato—all into a Live Wire Solutions ABY box leading to JD’s amps.
Multiple Marshall voices in an amp-in-a-box that doesn’t disappoint.
Surprisingly authentic Marshall tones and feel. Flexible EQ. On-board boost and a cool variac control.
Less flexibility with high-gain amps.
$246
Tsakalis AudioWorks Room #40
tskalisaudioworks.com
Like a lot of amp-in-a-box pedals, the Room #40 from Tsakalis AudioWorks makes some pretty lofty claims. Specifically, it alleges to capture the soul and essence of a Marshall plexi and, with the flip of a switch, a JCM800, too. There’s a lot of reasons to try to replicate the sound and feel of these amps in a pedal—not least their resale values of late. I’ve played a slew of Marshall-in-a-box pedals. And while many of them deliver convincing-enough bark, they’re rarely dynamic enough to stay on my pedalboard for long. The Room #40, however, often escapes that trap and offers a lot of flexibility for matching it to changing backlines.
Jump(ered)!
While the Room #40 has more knobs than either of the amplifiers it seeks to imitate, the extra controls make the pedal more flexible and dynamic. The four larger gold dials are the meat-and-potatoes. In plexi mode (toggle up), they offer a control scheme like on the “jumpered” inputs of a plexi. Vol I acts like the treble channel and Vol II works like the normal channel. In JMP/JCM800 mode (toggle down), Vol 1 is preamp volume and Vol II adjusts the low end. Once you’ve found your desired blend, the master sets the overall output. The fourth gold knob controls the “variac” function. EVH freaks, of course, know where this is going. During Eddie’s early career, he used a Variac transformer to step down the voltage of his Marshall and craft his fabled “brown sound.” Tweaking this knob on the Room #40 has a similar effect, altering the voltage between 7.5V to 21.5V to recast the compression and attack.
The 3-band EQ along with the essential presence control helps shape high-end frequencies. The final embellishment is a dedicated boost footswitch which kicks up the gain and accentuates the mids. It’s adjustable on the back of the pedal with a screwdriver, so there’s no need to take off the backplate.
Riding the Night Train
With the Room #40 plugged into a ’60s Fender Bassman and a Gibson Les Paul, engaging the effect lends the distinctly American side of the Bassman (an amp that can sound quite Marshall-y at volume) a very British overdrive accent. Sounds from the plexi mode are robust and surprisingly complex. And plenty of bottom-end is available by cranking up Vol II. If you’ve never played a jumpered Marshall, the Room #40’s controls can take getting used to. I’d suggest leaving the EQ flat until you find the right gain profile. I tend to keep my Bassman’s bright switch engaged for a little more punch. But it wasn’t as critical with the Room #40 in the mix, and high-end frequencies I needed to add or subtract were easily handled with the #40’s presence and high-frequency controls.
“Sounds from the plexi mode are robust and surprisingly complex.”
Switching over to an Orange OR50 and a Fender Stratocaster, the Marshall flavor came through clearest and sounded most complex at lower gain settings. You can definitely hit a dirty amplifier like the Orange with the Room #40, but the crunchier OR50 clearly overshadowed some of the Room #40’s charm and capacity for detail. Yet even with less headroom, the EQ and variac provide a lot of flexibility, and the boost is an excellent means for cutting through the dirt a bit. When running with dirtier amp settings, I liked the JMP/JCM mode with a little less Vol 1 output, which makes the Room #40 function more like a glassy, sparkly lead boost, rather than just dumping more gain into the signal path. However, maxing the Vol 1 control in this context delivers tons of grindy chug, and you can use the variac to shape a punchier response. In the upper regions of the variac sweep you get more headroom and loads of that no-nonsense attack you expect from a Marshall. But it also bears mentioning that the compression from the Room#40 feels properly spongy and authentic at the right settings.
The Verdict
For the gigging musician that needs Marshall flavor for a mystery backline or a less Marshall-like tube amp, the Room #40 is a cool way to get there. It’s compact, the tones are impressive, and it will cooperate with nearly any amp thanks to a versatile EQ and presence control. If that’s not enough, the variac knob and boost features further help set this pedal apart and make the $245 price seem pretty fair.
The answer is only a DIP switch—or two—away. The PG Tsakalis AudioWorks Molecular Boost review.
Recorded using a Schroeder Chopper TL into a Revv D20 and Avatar 12” cab miked with a Shure SM57 feeding a Focusrite Scarlett going into Logic with no EQ-ing, compression, or effects.
Rhythm: Mid-boost mode with gain at 10 o’clock
Lead: Treble boost mode with gain at 2 o’clock
RatingsPros:Many more usable tones and options than a simple clean boost. Tiny footprint. Switchable buffer and true-bypass modes. Cons: The high-mid setting can get a bit too trebly for single coils. Street: $178 Tsakalis AudioWorks Molecular Boost tsakalisaudioworks.com | Tones: Ease of Use: Build/Design: Value: |
The basic premise of a boost pedal could fit on a bumper sticker: Whatever you feed it comes out louder at the other end. Well, the Tsakalis Molecular Boost certainly does that. But it does a lot more, and calling it a boost sells this compact, one-knob wonder short. The secret sauce lies in the four small DIP switches on the left side. With a quick flick of a switch or two, the Molecular Boost moves between four different EQ curves (treble boost, high-mid boost, mid boost, and an all-frequency boosted “clean” mode). The gain, meanwhile, ranges to +18 dB.
The secret sauce lies in the four small DIP switches on the left side. With a quick flick of a switch or two, the Molecular Boost moves between four different EQ curves (treble boost, high-mid boost, mid boost, and an all-frequency boosted “clean” mode). The gain, meanwhile, ranges to +18 dB.
The clean boost mode is rich and full of body, and creeping past noon, you hear many additional overtones bubble to the surface. The mid- and high-mid boost settings are punchy and bright. And though the high-mid setting was a little too thin for my particular setup (a Schroeder T-style and Fender Hot Rod Deville) it would probably be a great fit for dark humbuckers. The ability to control the gain via expression-pedal is a welcome bonus, as is the internal switch that enables you to select true bypass, or use the Molecular Boost as a buffer. The Molecular Boost may be mini, but its impressive capabilities are a big deal.
Test Gear: Schroeder Chopper TL, Fender Modern Player Jaguar, Fender Hot Rod DeVille