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Ernie Ball Music Man Kaizen 7-string Electric Guitar - Kryptonite Certified Open Box , $3,149.99 - Add to Cart Skip to Product Information

Ernie Ball Music Man Kaizen 7-string Electric Guitar - Kryptonite Certified Open Box

7-string Solidbody Electric Guitar with Alder Body, Maple Neck, Ebony Fingerboard 2 Humbucking Pickups, and Multi-scale Tremolo Bridge - Kryptonite
Item ID: Kaizen7Kd1
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Ernie Ball Music Man Kaizen 7-string Electric Guitar - Kryptonite

Certified Open Box Savings!

Save $649.06 What is Certified Open Box?

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Savings: $649.06 New for $3,799.05
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Ernie Ball Music Man Kaizen 7-string Electric Guitar - Kryptonite Certified Open Box

Certified Open Box Savings!

Save $649.06 What is Certified Open Box?

The price below reflects your savings.

Savings: $649.06 New for $3,799.05

A Groundbreaking Collaboration with Tosin Abasi

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Our Product Research Team

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A new design, the Kaizen 7 is not a signature guitar — it’s a collaborative design between Tosin Abasi and Music Man. Shaped from alder, the original body design is contoured all the way around, leaving no flat surfaces on the instrument. The body is loaded with two all-new pickups — a slanted mini-humbucker in the neck and a full-size Custom HT heat-treated humbucker in the bridge — that deliver huge, tight tones. The roasted maple neck features a multi-scale ebony fingerboard with a 24.75–25.65-inch scale length. Music Man and Tosin also developed an innovative Infinite Radius fingerboard profile that allows you to see every inch of the fretboard while playing. Players at Sweetwater also appreciate the tremolo tailpiece — a rare sight on a multi-scale 7-string guitar. If you’re ready to experience something totally new, you’ll want to add the Kaizen 7 to your stable of guitars.

Exclusive humbucking pickup configuration

Ernie Ball Music Man developed two brand-new pickups for the Kaizen 7. The slanted neck pickup is a mini-humbucker mounted directly into the contoured alder body. With its naturally narrow field, the mini-humbucker gives you all the focused midrange bite you love with extra high-end clarity. Meanwhile, Tosin specified a custom-wound HT humbucker for the bridge position. Bolstered by a proprietary heat treatment, the HT humbucker showcases greater output, a huge dynamic range, and boosted presence. The Kaizen 7 has a 3-way pickup selector switch and Master Volume and Tone controls for shaping your sound.

All-new Infinity Radius fingerboard

Kaizen 7 is outfitted with Music Man’s Infinity Radius fingerboard design. Infinity Radius is an all-new concept with a slightly conical profile. The ebony fretboard is slightly thicker on the treble side with the cone’s pinnacle at the high E string. The Infinity Radius design lets you see the whole fretboard and fret markers from your playing position. Paired with the slick roasted maple neck, the Infinity Radius fingerboard is comfortable and sure to impress.

Multi-scale stainless steel frets and other thoughtful appointments

Tosin and Music Man spared no detail when designing the Kaizen 7. The guitar has an ebony fingerboard, 24 multi-scale stainless steel frets, and a 24.75–25.65-inch scale length. Multi-scale frets offer better intonation, keep the low strings at a higher tension, and allow the higher strings to bend with ease. The Kaizen 7 also has Steinberger gearless locking tuners that keep the strings arrow-straight from the tuning machine to the bridge. This design choice ensures you enjoy outrageous tuning stability under all playing conditions. Speaking of the bridge, Kaizen 7 has a custom-designed multi-scale tremolo bridge and tailpiece for even more expressive playing.

Ernie Ball Music Man Kaizen 7 Features:

  • Forward-thinking collaboration between Tosin Abasi and Music Man
  • Alder body provides a lightweight and solid tonal foundation
  • Extensively contoured body delivers a more comfortable playing experience
  • Custom-wound mini-humbucker in the neck position produces focused, growling tones
  • Heat-treated bridge humbucker offers extra high-end content and improved touch sensitivity
  • Flame maple neck plays like a dream
  • Infinity Radius fingerboard provides extra fretboard visibility
  • 24.75–25.65-inch multi-scale frets improve intonation
  • Steinberger gearless locking tuners and multi-scale tremolo bridge provide amazing tuning stability
  • Stainless steel frets offer silky-smooth playability

Why Buy Your Guitar from Sweetwater?

See how Sweetwater goes to great lengths to give you the very best online guitar buying experience. From our online Guitar Gallery that allows you to see and select the exact instrument you want to our 55-point Inspection process and our in-house guitar techs, we take the guesswork out of buying your next guitar online.

What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.