A pedal builder collaborates with his pal, guitar tech John Taggart, on a chambered guitar with a built-in overdrive.
Name: Greg Droman
Hometown: Healdsburg, California
Guitar: Karmatar
My friend, John Taggart, is an A-list guitar tech to the stars: Waddy Wachtel, John McVie, Carlos Rios, Paul Gilbert, Bruce Conte, and many others. His true passion is building guitars, literally from scratch, including the necks. Several months ago, he told me he wanted to build us each a guitar incorporating an overdrive pedal I make and sell—the Karma MTN-10, a clone of the Ibanez Mostortion from the early '90s. I've seen and admired John's work, and I was thrilled to help with the design of the circuit for them.
The design John had in mind is a chambered body, loosely based on a T-style body shape. The front and back are pine from a dresser he grew up with back in the 1960s, and the hollowed center core is from old waterbed frame rails. John fashioned the 4-bolt necks from slabs of curly maple, with medium-jumbo frets and Kluson tuners.
Greg Droman
He told me to choose whatever pickups I wanted. After talking it over, we both ended up with Seymour Duncan Antiquity II Humbuckers. He's a big fan of the Pigtail wraparound bridges, so those are what we used. A sprayed-on lacquer finish completed it.
I modified the Karma MTN-10 circuit boards to make it easier for John to mount them inside the guitar. The overdrive is true-bypassed with a push-pull pot on the tone control. John cast the bigger volume and tone knobs (inlaid with white arrow pointers) from his own mold of some vintage 1960s Atwater Kent knobs he found in an electronics store back in the late '70s. A battery bag holds the 9V battery, which activates when a cable is inserted into the output jack.
This guitar surprised us both! It's a total joy to play, weighing in at a back-friendly 6 pounds. It has a cool, hollow, woody tone without the feedback. The pickups sound amazing, with plenty of bite in the bridge and lots of warmth in the neck.
The neck itself feels like silk—fast and comfortable. I wasn't sure how I would bond with an overdrive built inside a guitar, as it's not usually the first in my chain, but it seems to take on a whole character of its own inside this guitar. And it's just plain fun!
We'd been calling it the "Tagg/Karma," but we've now changed that to "Karmatar." It's a beautiful, unique work of art. Definitely a keeper!
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Warm, articulate, natural overdrive and distortion tones offer an alternative to the same old OD blues. The PG Cascade Hosstortion review.
RatingsPros:A characterful overdrive with great touch sensitivity, excellent clarity, and versatile EQ. An able recreation of a hard-to-find classic. Cons: No major negatives, but it's worth knowing whether a MOSFET overdrive is your cup of tea before spending the cash on this one. Street: $175 Cascade Pedals Hosstortion cascadepedals.com | Tones: Ease of Use: Build/Design: Value: |
Cascade, a creative pedal maker based in the western North Carolina town of Asheville, builds a lot of custom stomps. The Hosstortion, however, is a new entry into its growing production lineup. The circuit, as Cascade main-man Charlie Mostoller tells us, is a “modern reimagining" of the rare and sought-after Ibanez MT10 Mostortion pedal of the early '90s, a MOSFET-based distortion-overdrive beloved for its thick, warm mids, biting clarity, and walloping low end.
Although the CMOS op-amps used in the original Ibanez were discontinued 15 years ago, the creation of powerful new BiMOS chips enables Cascade to re-cast the Ibanez formula with more gain, while retaining the versatile EQ and basic voice of the MT10. Further nods to modern performance include a bipolar charge pump for added headroom and lower noise, and premium true-bypass switching.
Hossenpfeffer Stew
Cascade's custom enclosures can be pretty creative. The company's Scooby-Doo Fuzz, for example, is housed in a repurposed toy Mystery Machine. The Hosstortion, however, is built in a standard enclosure and finished in striking sour-apple-green metallic with graphics that echo the MT10's original design motif. (Sadly, Cascade didn't use the Pac-Man-style knobs that distinguished the MT10.) Controls include dirt (gain), level, high, mid, and low. The bypass switch is held tight by an anodized lug nut. Cascade warns that the Hosstortion should only be used with a 9V center-negative power supply, and there's no 9V battery option.
Giddy-Up, Hoss
It's worth noting that although the pedal has “distortion" in its name, it's not meant to be a screaming high-gain metal machine, but more of a medium-gain overdrive, or a vintage-style low-gain distortion. Starting at low gain settings reminds you that good MOSFET overdrives possess many distinct, individual characteristics. (Marshall famously used MOSFET overdrive to get as close to possible to tube-style distortion in their '80s solid-state amps, which have fans to this day.)
Even at conservative settings on the gain knob (around 9 to 10 o'clock), the Mosstortion is thick, rich, and juicy, and it's great for goosing a Tele-style bridge pickup into slightly gnarlier twang zones. And in this way, it's a fantastic pedal for switching on and forgetting—adding depth and personality to an amp when you can't crank it up into its sweet spot.
Throughout its gain and EQ ranges, the Hosstortion consistently delivers a very enjoyable blend of articulation, girth, and, at times, a raw edge that lends texture without getting harsh or blocky. Higher gain settings elicit smooth complex-but-saturated overdrive that tends more toward singing solos or chunky power chords, while retaining an edgy bark that is signature MOSFET. Even with the gain up to 3 o'clock, it's still extremely transparent. It's also very responsive to guitar volume attenuation, leaving you with a beefy but characterful near-clean tone when you turn down.
I don't have an original Ibanez MT10 on hand to A/B with the Hosstortion (and acquiring one on the vintage market would probably cost $400 to $600), but to the extent that memory serves me, the Hosstortion sounds and feels much like the Mostortion that I occasionally played in the late '90s, and it's an impressive encapsulation of the natural, warm-to-mildly-aggressive tones and response that made MOSFET overdrives appealing in the first place.
The Verdict
The Hosstortion isn't just a ruggedly built and cleverly conceived reimagining of the iconic Ibanez Mostortion of the early '90s. It's a characterful and dynamic overdrive by any measure. It maintains surprising transparency amid the thick, rich textured voicing, and it's an excellent alternative to the more ubiquitous TS-style template.
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