King 623 Diplomat Baritone Horn Overview
The King 623 Diplomat is a compact Bb baritone horn designed around a 3/4-size body, an upright bell, and a straightforward three-valve layout. Its manageable format makes it a practical choice for school programs and developing low-brass players who need the traditional role and range of a baritone in a more compact instrument.
King 623 Diplomat Baritone Horn Specifications
- Instrument Type: 3/4-size baritone horn
- Key: Bb
- Bore Size: .562 inches
- Bell: 10-inch upright yellow brass bell
- Valves: Three top-action nickel-plated piston valves
- Finish: Clear lacquer
- Case: King-branded hard case
- Accessories: Bach 6-1/2AL small-shank mouthpiece and Bach Synthetic+ piston valve oil
- Serial Number: 662125
Condition & Setup
This used baritone is in excellent playing order and has been professionally serviced, set up, and play-tested before sale. The clear lacquer finish shows light scratches and scuffs, most notably around the bell flare and interior, along with faint handling marks on some reflective surfaces. The included King hard case shows light exterior rubbing and scuffing, with its handle and latches present.
Who the 623 Diplomat Baritone Horn Is For
The 623 Diplomat is well suited to student musicians, school programs, community ensembles, and players seeking a compact traditional American baritone configuration. Its 3/4-size body is easier to manage than many full-size low-brass instruments, while the upright bell and three top-action valves provide a familiar concert-band layout. Players who specifically need a four-valve euphonium configuration should consider a larger instrument designed for that role.
Common Questions About the King 623
How does the 3/4-size body affect the instrument?
The compact body can provide a more comfortable physical fit for younger or smaller players while retaining the Bb baritone's established ensemble range and function.
How does the King 623 differ from a full-size euphonium?
The King 623 uses a compact 3/4-size body and three-valve baritone layout. Full-size euphoniums are generally larger and frequently add a fourth valve for expanded fingering options in the low register.
What mouthpiece configuration does this instrument use?
This instrument includes a Bach 6-1/2AL small-shank mouthpiece, a familiar low-brass mouthpiece format that is compatible with the supplied receiver.
We are proud to be an authorized King dealer
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99
King 623 'Diplomat' Student Bb Baritone Horn in Clear Lacquer
King 623 Diplomat Baritone Horn Overview
The King 623 Diplomat is a compact Bb baritone horn designed around a 3/4-size body, an upright bell, and a straightforward three-valve layout. Its manageable format makes it a practical choice for school programs and developing low-brass players who need the traditional role and range of a baritone in a more compact instrument.
King 623 Diplomat Baritone Horn Specifications
- Instrument Type: 3/4-size baritone horn
- Key: Bb
- Bore Size: .562 inches
- Bell: 10-inch upright yellow brass bell
- Valves: Three top-action nickel-plated piston valves
- Finish: Clear lacquer
- Case: King-branded hard case
- Accessories: Bach 6-1/2AL small-shank mouthpiece and Bach Synthetic+ piston valve oil
- Serial Number: 662125
Condition & Setup
This used baritone is in excellent playing order and has been professionally serviced, set up, and play-tested before sale. The clear lacquer finish shows light scratches and scuffs, most notably around the bell flare and interior, along with faint handling marks on some reflective surfaces. The included King hard case shows light exterior rubbing and scuffing, with its handle and latches present.
Who the 623 Diplomat Baritone Horn Is For
The 623 Diplomat is well suited to student musicians, school programs, community ensembles, and players seeking a compact traditional American baritone configuration. Its 3/4-size body is easier to manage than many full-size low-brass instruments, while the upright bell and three top-action valves provide a familiar concert-band layout. Players who specifically need a four-valve euphonium configuration should consider a larger instrument designed for that role.
Common Questions About the King 623
How does the 3/4-size body affect the instrument?
The compact body can provide a more comfortable physical fit for younger or smaller players while retaining the Bb baritone's established ensemble range and function.
How does the King 623 differ from a full-size euphonium?
The King 623 uses a compact 3/4-size body and three-valve baritone layout. Full-size euphoniums are generally larger and frequently add a fourth valve for expanded fingering options in the low register.
What mouthpiece configuration does this instrument use?
This instrument includes a Bach 6-1/2AL small-shank mouthpiece, a familiar low-brass mouthpiece format that is compatible with the supplied receiver.
We are proud to be an authorized King dealer
Pairs well with
In stock! Ships within 1-2 business days.
30-day risk-free trial
2-Year Warranty
Complimentary shipping for all U.S. orders over $99
King 623 'Diplomat' Student Bb Baritone Horn in Clear Lacquer
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
Orders valued over $99 ship via FedEx 2-Day within the U.S. and via DHL internationally. A physical address (no P.O. Boxes) and signature are required. Smaller accessories ship via USPS (2–5 day service) and do not require a signature if valued under $99. Please see our FAQ for additional details.
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Return Policy
We offer an unconditional 30-day return policy to ensure you’re completely satisfied. If you’re unhappy for any reason, return the item for a full refund or full exchange credit (reeds and other consumables are non-returnable once opened). Every instrument we sell is guaranteed to be free of mechanical defects—if an issue arises, contact us and we’ll either reimburse a local repair or provide a prepaid return label for repair, exchange, or refund. If you simply change your mind, you may still return the item for a full refund, but return shipping costs are the customer’s responsibility unless free returns were purchased through Redo at checkout. Please see our FAQ for additional details.
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Shop Warranty:
Brand new items are covered by the full manufacturer’s warranty unless otherwise noted (see the individual maker for details). Open box/refurbished, used, and vintage items include a two-year warranty serviced by our in-house repair shop, and we guarantee every instrument will be free of mechanical defects. Warranty coverage does not include damage from accident, misuse, negligence, improper operation, unauthorized alterations or removed serial numbers, normal wear and routine maintenance, environmental damage (including perspiration, corrosion, or extreme temperature and humidity), lacquer or plating wear, or consumable parts such as springs, pads, and felts. Please see our FAQ for additional details.