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Hirschman Mutes KR Indigo Plunger Mute for Trumpet!

(7 reviews) Write a Review
Hirschman KR Indigo Plunger
1.00 LBS
Calculated at Checkout
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World's Greatest Plunger Mute?


This mute is quickly becoming a customer favorite here at ACB!

The Hirschman Mutes "KR Indigo" Plunger Mute is the culmination of a decades-long quest for the best sounding, BY FAR most in tune, easiest to play, most comfortable to hold, most expressive trumpet plunger that money can buy.

"KR" are the initials of Kenny Rampton, world-renowned trumpet player and long-standing member of the Jazz at Lincoln Center Orchestra under the direction of Wynton Marsalis. Kenny co-designed this plunger with Hirschman Mutes, incorporating feedback from some of today's top trumpet players.


Please note that no coupon or discount codes can be used on this product.

Unique features:

  • IN TUNE! — From low to high, the most in-tune plunger ever.  It also provides consistent pitch when switching between open and closed (tight) plunger, something essential for ensemble passages.  Better intonation means less "lipping" of notes, reducing fatigue and increasing endurance.  
  • Kenny Penny™ venting system —  Some players like to drill a hole through their plungers (where the wooden stick was) and some don't. Others carry two plungers in their bag to have both.  The Kenny Penny venting system provides one penny outside the plunger and another inside.  Turning the outer penny closes the plunger hole with the inner penny.  Kenny Rampton likes it closed for playing over straight mute and open for plunger alone.  There's no right or wrong, and the Kenny Penny lets you discover your ideal sound...that's our "two cents."
  • Handgrip — Our large, comfortable handgrip makes the plunger easy to pick up and hold.  No more slips or drops!
  • Pixie mute killer - Can be used with a standard sized straight mute, so there's no need to buy or lug around a stuffy, out of tune pixie mute anymore.  Throw those in the trash where they belong.
  • Tone hole — With the Kenny Penny in the open position, you can create interesting effects by covering/uncovering the tone hole with a finger.
  • Distinctive color —  Inspired by Duke Ellington's Mood Indigo and Snooky Young's/Clark Terry's blue plungers, with a design updated for the 21st century.

Choose from two sizes

The "KR Indigo MAX" (Height 3.5"/88.9mm, Outer diameter 5.145"/130.7mm, Inner lip diameter 4.21"/106.9mm) is slightly deeper and wider on the outside than the "KR Indigo", providing the ultimate in plunger sound and intonation. Works great on standard bell size trumpets (for example the Bach 37) as well as larger bell trumpets.

The "KR Indigo" model is for players that prefer a more traditionally sized plunger or have a shorter reach. Height 3.375"/85.7mm, Outer diameter 4.81"/122.2mm, Inner lip diameter (same as MAX) 4.21"/106.9mm.


Read what Thomas Gansch, Scotty Barnhart and Marcus Printup have to say about the Hirschman Mutes "KR Indigo" Plunger Mute:

Thomas Gansch — Leader and trumpet, Mnozil Brass - "Brass players listen: I got this beauty from my good friend Kenny Rampton, a master in the art of plunger playing. He developed the KR Indigo Plunger with Hirschman Mutes and it is an absolute must-have. Only the Indigo has the Kenny Penny!"

Scotty Barnhart — Leader and trumpet, Count Basie Orchestra - "Kenny Rampton’s new plunger mute is just great. The intonation is perfect, it fits nicely in my hand, and it’s easy to play in a variety of ways. I love it!”

Marcus Printup —International trumpet soloist and member of the Jazz at Lincoln Center Orchestra - “I’ve always had to teach students how to bend pitch in order to play in tune with a plunger. Bending isn't needed with the Hirschman Mutes KR Indigo because it plays PERFECTLY in tune. Great job Kenny...and you get the Kenny Penny!"


If you have additional questions send us an email

Prior to ordering please check our Shipping and Returns policy.

Also note weight indicated in the ad is shipping weight not actual weight of item.

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7 Reviews

  • 5
    Hirschman Plunger Mute

    Posted by Jeff Hedberg on 27th Jul 2021

    No need to think to twice about this mute. It is amazing! Versatile, in tune, and just downright fun! Yes, the Kenny-penny makes a huge difference, allowing for different sounds and feels. Extremely easy to play, even when fully closed, comfortable to hold. I went with the larger size for a 5.25 inch bell.

  • 5

    Posted by Jay Copenhaver - The Wally Gingers Orchestra on 26th Jul 2021

    Sweet sounding plunger mute, much better than my “Plumber’s Helper” mute!

  • 5
    Killer mute!

    Posted by J on 2nd May 2021

    Get one. You won't be disappointed.

  • 5
    Great Mute!

    Posted by Joseph Foley on 29th Apr 2021

    These are terrific plunger mutes! The ability to "plunge" without the pitch changing is awesome, and the the adjustable coin in the hole is a great idea. (Just my two cents..) Bravo, Kenny Rampton on this mute and thank you Austin Custom Brass for the speedy turnaround!

  • 5
    Awesome Mute!!

    Posted by Richard Quigley on 8th Dec 2020

    It is so easy to hold and quite very versatile compared to a standard plunger from the hardware store. With its unique design and color it has quite the cool factor. Oh, and it sounds pretty great too!!

  • 5
    KR Indigo Maxx Plunger

    Posted by Josh Meade on 22nd Sep 2020

    This plunger and the standard size are now the best plungers on the market! They play in tune when closed! What more can you ask for?

  • 5
    Great Plunger Mute

    Posted by Trevor N. Teuscher on 12th Sep 2020

    The mute is every bit as good as advertised!

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