¡Obtenga asesoría en español!  Llámenos hoy a (800) 222-4701
(800) 222-4700 Talk to an expert!
Loading Cart
Your Cart Is Empty

See what's new at Sweetwater.

My Cart this.cartQty

Jupiter JEP1105M Quantum MK II Marching Euphonium - Clear Lacquer , $3,424.00 - Add to Cart Skip to Product Information

Jupiter JEP1105M Quantum MK II Marching Euphonium - Clear Lacquer

Euphonium with 11" Yellow Brass Bell, 0.592" Bore, Nickel-silver Leadpipe, 3 Stainless Steel Valves, 3rd-valve Slide Finger Ring, and 1st-valve Slide Thumb Trigger - Clear Lacquer
Be the first to review Item ID: JEP1105M
Jupiter JEP1105M Quantum MK II Marching Euphonium - Clear Lacquer
Jupiter JEP1105M Quantum MK II Marching Euphonium - Clear Lacquer

We Can Get It!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with Jupiter. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated September 2026

Ask An Expert Our Expertly trained Sales Engineers are ready to help! What is a Sales Engineer?
Jupiter JEP1105M Quantum MK II Marching Euphonium - Clear Lacquer
We Can Get It!

While this isn't an item we normally stock, we can still get it to you as fast as possible due to our great relationship with Jupiter. Go ahead and place your order and we'll follow up shortly to let you know when to expect it. Estimated September 2026

Command the Field with Rich, Resonant Tone

This article was Written By

Our Product Research Team

Get to know them!

Tucked between the powerful brass and the percussive heartbeat of the field, the Jupiter JEP1105M Quantum MK II euphonium brings a rich, velvety tone that adds depth and warmth to any marching band’s sound. The combination of its 0.592-inch bore, nickel-silver leadpipe, and 11-inch yellow brass bell projects this rich, dark sound all the way to the press box. Meanwhile, the 1-piece bracing and valve section design optimize this instrument’s resonance and responsiveness. The JEP1105M benefits from a unique annealing process, enhancing its timbre for a pure, warm sound and a broad dynamic range. Additionally, you’ll appreciate the lightweight, balanced design of this instrument, which minimizes fatigue during full-day rehearsals and marathon drill blocks. Finally, you get a first-valve slide trigger and a third-valve slide finger ring for easy intonation adjustment, a right-hand carrying ring for ergonomic comfort, and smooth stainless steel pistons for fast action and agile playability. With unmatched tonal richness and a player-focused design, the JEP1105M Quantum MK II stands as a commanding presence in any ensemble.

Jupiter: guaranteed through graduation

A staple in classrooms everywhere, Jupiter band instruments are beloved by music teachers for good reason. Since 1980, the company has built high-quality band instruments for students of every development level. Innovations such as the Waveline flute headjoint and the patented Ergonomic trombone are just two examples of the company’s player-centered design philosophy. Each Jupiter instrument is inspected for quality throughout the manufacturing process, ensuring that it can endure bumps and bruises as easily as it can navigate technical passages. Sweetwater believes that every student should have access to the rich musical culture that unites us all. And with Jupiter’s player-first focus, anyone is welcome to embark upon an exciting and fulfilling musical journey through high school graduation and beyond.

Jupiter JEP1105M Quantum MK II Features:

  • A durable marching euphonium with a rich, velvety tone
  • 0.592-in. bore, nickel-silver leadpipe, and 11-in. yellow brass bell offer stunning projection
  • 1-piece bracing and valve section design optimize resonance and responsiveness
  • Unique annealing process delivers a pure, warm sound with a broad dynamic range
  • Lightweight, balanced design minimizes fatigue during full-day rehearsals and marathon drill blocks
  • 1st-valve slide trigger and a 3rd-valve slide finger ring supply easy intonation adjustment
  • Right-hand carrying ring provides ergonomic comfort
  • Smooth stainless steel pistons yield fast action and agile playability
  • Includes an ABS case with an aluminum valance

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.