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Austin Custom Brass MV 3C Special Mouthpieces

(21 reviews) Write a Review
"I didn’t need to play around on it for more than a few minutes to know it had rendered the previous dozen mouthpieces I purchased unnecessary. It’s extraordinary." -Ryan Wooden
2.00 LBS
$7.00 (Fixed Shipping Cost)

Product Overview

My #1 selling mouthpiece at ACB!

The ACB MV 3C Special Trumpet Mouthpiece

I have often wondered why you see the eBay auctions of Bach Mount Vernon 3C mouthpieces routinely sell for $400 or more. Is there something special and different about these pieces over a traditional 3C?

Well... the answer I found out was YES!

Check out the overlay below for a comparison of my standard 3C (in red) to the ACB MV 3C:



As you can see, there are some differences in the rim, the entrance to the throat, and especially in the cup shape and volume.

I am now offering this custom mouthpiece in my line for a lot of reasons but mostly because it sounds so great! It is a bit bigger all-around (as seen in the overlay) than the traditional 3C. For me it feels a smidge smaller than a 1 1/2C. I also put my MO backbore (smaller symphonic shaped) and a #26 throat in this mouthpiece. The sound shape is tremendous and rich.


Order one today and hear for yourself why the MV 3C has become the most popular mouthpiece we sell here at ACB!

Check out some of the customer reviews below, like this one from Dieter Zimmerer:

"The ACB MV3C was my first ACB mouthpiece. Since then I must have had about 12 different ACB mouthpieces. Some are gone and about 8 are left here. They are all extremely good mouthpieces and get some playing time here and there, but the ACB MV3C gets by far the most playing time. It's just a super mix between full sound, great attack, easy playability and efficiency."


All non-standard blank ACB pieces are custom orders and take 4 weeks.

Call the Mouthpiece Hotline with questions or to place an order! +1-781-816-9664


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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(21 reviews) Write a Review

21 Reviews Hide Reviews Show Reviews

  • 5
    MV3C Quality Sound

    Posted by Greg Kalbaugh on 25th Feb 2020

    Aside from practice at home, used my recent MV3C purchase for the first time last night at a three hour gig. Must say the quality and performance was more than expected. Added a darker resonance of sound to the jazz. Both comfortable and reliable. Found it to be heads above my Bach 3C.

  • 5
    The best

    Posted by Erik on 24th Jan 2020

    I've played Monette, GR, and Curry, but when I discovered this ACB MV3C, it instantly became my favorite and I've been playing this Mpc for years now. For me, it's the great full tone, ease and evenness throughout all registers, versatility in playing all kinds of styles. It's super comfortable and it even looks cool to boot. It's just the best mouthpiece I've ever played.

  • 5
    ACB MV3C is my go to MP

    Posted by Tim O'Toole on 17th Jan 2020

    I started playing the MV3C about a year ago and I cannot even describe how much it has done for me as a player. I am playing higher with better endurance and slotting so much cleaner with this mouthpiece than my old Stork 3D. I've tried a couple of Monette MP in the past year and sadly had to sell them for a loss on ebay because they were not as comfortable and I was not getting the sound or range that I wanted. Simply put this mouthpiece is amazing! I have the same setup for my ACB Flugelhorn and it plays magnificent!

  • 5
    Stunning mouthpiece. Instant favorite.

    Posted by Ryan Wooden on 26th Sep 2019

    I just received this mouthpiece the day of this review. I didn’t need to play around on it for more than a few minutes to know it had rendered the previous dozen mouthpieces I purchased unnecessary. It’s extraordinary. While part of me wishes I had found this gem first, I am also glad I worked my way through the gamut of available options before landing here because I feel very confident ending my go-to mouthpiece search. I haven’t felt this confident in any of the others I’ve purchased, despite spending significant research and money on them. While I can’t compare this to a vintage Mount Vernon 3C because I haven’t used one, I can speak to its functionality. The rim is extremely comfortable compared to other 3Cs I’ve used and owned; it isn’t too sharp, but doesn’t shy away from the lip either. My trumpet feels more responsive with this piece, even at soft, low-pitched passages. In appearance, it is beautifully shaped and finished. If I find anything negative to report, I will return to edit this review. At this time, I am the very happy owner of my new MV 3C. P.S. Trent answered the phone when I called to check up on my order. I recognized his voice from his YouTube videos. He is refreshingly friendly and patient. I won’t hesitate to call him with questions in the future and you shouldn’t either.

  • 5
    Fantastic mouthpiece!

    Posted by Daniel Matthews on 10th Sep 2019

    I can't say enough good things about this mouthpiece. This is a far superior mouthpiece compared to the stock 3C that I've been playing on for the last few years. It's incredibly comfortable and responsive! Not to mention a great deal.... old and grimy MV 3C's go for upwards of $300 on Ebay! Looking forward to putting in many more hours on this great mouthpiece.

  • 5
    review MV 3C tpc Mpc

    Posted by Terry Allen on 6th Aug 2019

    Outstanding craftsman ship. Old school shank design , brushed silver finish. Love ACB MPC's.

  • 5
    ACB MV 3C Vintage Blank

    Posted by Brian on 30th Jun 2019

    Awesome mouthpiece, very comfortable rim with great core to the tone.

  • 5
    ACB MV3C

    Posted by Fred Bradley on 15th May 2019

    Nice piece. I found Bach mouthpieces in general too sharp on the inner rim to play comfortably. Played on a Schilke 15C4 or 15A4A. The MV3C has a nice wide comfortable rim. I’m still settling in with it but liking the overall results. I can get a nice brite legit sound or that smoky Chet Baker sound. Playing this on the MB RLGB. Thanks Trent and Josh great products / service. This is one great business to deal with!!

  • 5
    MV 3C Slug

    Posted by Peter C. Ingoglia on 16th Feb 2019

    This mouthpiece is beast! Effortless to play with a brilliant sound. Highly recommend.