Mönnig 'Diamant' Professional English Horn SN 9779 IMPECCABLE
Mönnig Diamant English Horn
The Mönnig Diamant English Horn represents the pinnacle of German woodwind craftsmanship — a masterwork of precision, resonance, and expressive power. Hand-built in Markneukirchen, Germany, the Diamant embodies the legacy of Gebrüder Mönnig, whose instruments have long been favored by top orchestral players for their rich tone and impeccable response.
Constructed from carefully selected, aged grenadilla wood, the Diamant English horn offers extraordinary tonal depth and projection. The bore is meticulously hand-reamed to produce a dark, focused core sound while maintaining fluid flexibility across registers. Intonation is balanced and secure, allowing the player to shape every phrase with ease. This instrument has typical Mönnig pads, which are a combination of half the pad being cork (in the key cup) and half being foam (the part contacting the tone hole.
Silver-plated keywork provides a comfortable, quiet mechanism with exceptional feel and reliability. The craftsmanship extends to every detail — from the handcrafted gold plated posts and pillars to the precision adjustment of each pad. The result is an English horn that responds instantly to the player’s nuance, delivering a voice that is warm, noble, and unmistakably refined.
Ideal for: Advanced and professional players seeking a world-class English horn with traditional German resonance and effortless playability.
Features:
- Handcrafted in Germany by Gebrüder Mönnig
- Select grenadilla wood body, aged for maximum stability
- Silver-plated keywork with precision hand-fitting
- Full conservatory system with left F and third-octave key
- Balanced intonation and superior projection
- Dark, resonant tone ideal for orchestral and solo performance
- Condition: excellent used condition. Freshly serviced and ready to play
- Bocals: #1 and #2 Mönnig bocals
- Includes deluxe French-style case
The Mighty Quinn Brass and Winds is proud to offer financing through our partnership with Klarna!

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Pay your way: Choose from interest-free payment plans and customizable payment options.
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Apply for financing directly through our website at time of checkout for instant approval!
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Klarna offers financing up to $10,000. If you would like to obtain financing for more than that amount, we can help! Please contact our customer service team to set up financing through United Midwest Savings Bank
We want you to be happy and satisfied with your purchase, and we offer an unconditional 30 day return policy. If you are unhappy with your item for any reason, just return it for a full refund or full credit towards an exchange. (Reeds and other consumables are non-returnable once opened.)
We warranty every item we sell to be free of mechanical defects. If you find an issue with your purchase, please contact us. We will either reimburse you to have any minor repairs completed by your local repair shop, or we will send you a label to cover all return postage charges so that we can either repair your instrument, exchange your instrument, or issue you a refund for your instrument. We stand behind our products, and we truly want you to be happy.
Please note that if you simply change your mind about the purchase of an item - if you find that it's just not the one for you - you are still entitled to a full refund. We do not routinely charge a restocking fee; however, you will be responsible for the expense involved in shipping the item back to us if you have not purchased free returns through Redo at checkout. (Redo is available for domestic sales in the US only - international customers will be responsible for return shipping). Upon receipt of your return, our technicians will go over the instrument to ensure everything is in the same condition in which it was sold. Damage to the instrument, missing accessories, or unauthorized alterations/repairs may affect your refund. Your refund will be processed within 5 business days of our receipt of your return.
If more than five returns are requested within a calendar year, a 20% restocking fee will be assessed for every return moving forward for that calendar year.
BRAND NEW ITEMS are covered by the full manufacturer’s warranty unless specifically noted otherwise. Please check individual makers for terms and conditions.
USED and OPEN BOX ITEMS include a two-year warranty serviced through our in-house repair shop. We guarantee that every instrument we sell is free of mechanical defects.
PLEASE NOTE: Warranty does not cover the following:
- Damage, deterioration or malfunction resulting from accident, negligence, misuse, abuse, operation or failure to follow instructions according to the Owner’s Manual for this product
- Any unit which has been altered or on which the serial number has been defaced, modified or removed
- Normal wear and any periodic maintenance
- Deterioration due to perspiration, corrosive atmosphere or other external causes such as extremes in temperature or humidity
- Lacquer or plating finish wear
- Springs, pads and felt parts
HISTORIC ITEMS have not been serviced in our shop and do not include a warranty.
HOW TO USE YOUR WARRANTY
Contact [email protected] attaching photos of the affected item, so that we we may determine the best course of action:
(For larger repairs) Receive a free mailing label to send the instrument back to us for repair. We will address any technical problems in our shop and send you back your horn free of charge.
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(For small repairs) Bring your instrument to a trusted local shop for a quote, and we will reimburse you their nominal shop fee to fix it at their location.






















