Skip to main content
Home / Harmonicas / TOMBO Official 24-Hole Tremolo Harmonica 6624S PRO, Adult Professional Performance Grade with Electroplated Seat Plate

Attributes

Brand -
Category Musical Instruments/Guitars/Pianos/Accessories / Harmonicas
Origin -
Brand TOMBO
Model Number 6624S PRO
Number of Holes 24
Type Tremolo Harmonica
Key C Major
Cover Material Stainless Steel
Reed Plate Material Phosphor Bronze
Seat Plate Finish Electroplated
Target Audience Adult Professionals
Country of Origin Japan

6 reviews

A

Anonymous

Mar 23, 2026

Rating: 5/5

Professional Grade Indeed

I have been playing harmonica for over 20 years, and this is one of the best instruments I have owned. The air efficiency is excellent, requiring less breath to produce a full volume. The tuning is precise right out of the box.

A

Anonymous

Mar 12, 2026

Rating: 4/5

Great Sound, Slight Break-in Period

The sound is rich and warm, exactly what you expect from a Japanese harmonica. It felt a little stiff on the very first day, but after a few hours of playing, the reeds loosened up nicely. Now it plays like a dream.

A

Anonymous

Mar 11, 2026

Rating: 4/5

Lovely Instrument for Intermediate Players

Bought this as a gift for my husband who is advancing his skills. He loves the projection and the comfortable mouthfeel. The only reason for 4 stars instead of 5 is the price point, but the quality justifies it.

A

Anonymous

Mar 11, 2026

Rating: 5/5

Perfect for Folk Music

I primarily play folk and traditional music, and this 24-hole tremolo is perfect for that genre. The dual-reed design creates a natural vibrato that adds so much emotion to the melodies. Worth every penny.

A

Anonymous

Mar 06, 2026

Rating: 5/5

Exceptional Clarity and Tone

As a semi-professional musician, I was looking for an upgrade from my student model. The TOMBO 6624S PRO delivers incredible clarity. The tremolo effect is smooth without being overpowering, and the electroplated seat plate gives it a premium feel. Highly recommended for serious players.

A

Anonymous

Mar 03, 2026

Rating: 5/5

Beautiful Craftsmanship

The build quality is outstanding. The stainless steel covers are polished to perfection, and the instrument feels solid in the hand. The response is immediate across all octaves. It arrived in a sturdy case which is a nice bonus.

5 FAQ

Q: Is a cleaning cloth or maintenance kit included?

A: The harmonica comes with a protective hard case. While a specific cleaning cloth is not always included in the box, we recommend using a soft, dry microfiber cloth to wipe down the covers after each use.

Q: Does this harmonica come in keys other than C?

A: Yes, the TOMBO 6624S PRO series is available in various keys including G, A, Bb, and D. Please check the specific product listing or contact us to request a different key.

Q: How do I clean the electroplated seat plate safely?

A: To clean the electroplated parts, gently tap the harmonica to remove moisture and wipe the exterior with a dry soft cloth. Avoid using water, alcohol, or chemical cleaners directly on the reed plates or seat plate to prevent damage.

Q: Can beginners use this model or is it too advanced?

A: While this is a professional-grade instrument, a dedicated beginner can certainly use it. However, due to the 24-hole layout and sensitivity, some starters may find a 16-hole model slightly easier to manage initially.

Q: What is the warranty period for this product?

A: TOMBO harmonicas purchased through authorized dealers come with a standard 1-year manufacturer warranty covering defects in materials and workmanship.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Automatic Dairy Beverage Filling Machine - Fully Automatic Equipment for Milk, Soy Milk, and Drink Bottling

Automatic Dairy Beverage Filling Machine - Fully Automatic Equipment for Milk, Soy Milk, and Drink Bottling

$1,316.00

Compact Invisible Retainer Case - Leak-Proof Sealed Storage Box for Children's Orthodontic Aligners

Compact Invisible Retainer Case - Leak-Proof Sealed Storage Box for Children's Orthodontic Aligners

$12.50

07521 Scouring Pad Roll for Woodworking, Furniture, Paint Sanding, Metal Deburring, and Brushed Finish - Purple 600 Grit

07521 Scouring Pad Roll for Woodworking, Furniture, Paint Sanding, Metal Deburring, and Brushed Finish - Purple 600 Grit

$81.00

Shiya Insulated Display Cabinet, Constant Temperature Warmer for Commercial Use, Crispy Pork Belly, Roast Duck, Roast Chicken, and Cooked Food

Shiya Insulated Display Cabinet, Constant Temperature Warmer for Commercial Use, Crispy Pork Belly, Roast Duck, Roast Chicken, and Cooked Food

$388.00

Wooden Soap Trimmer with Drawer, Soap Planer and Edge Shaper, Free Shipping

Wooden Soap Trimmer with Drawer, Soap Planer and Edge Shaper, Free Shipping

$32.00

Hell Training Rock Guitar by Shinichi Kobayashi Electric Guitar Textbook Tutorial Speed Picking

Hell Training Rock Guitar by Shinichi Kobayashi Electric Guitar Textbook Tutorial Speed Picking

$106.00

Zhao Mengfu Running-Cursive Calligraphy Copybook - Spring River in the Flower Moon Night Tang Poems for Tracing and Practice

Zhao Mengfu Running-Cursive Calligraphy Copybook - Spring River in the Flower Moon Night Tang Poems for Tracing and Practice

$16.00

Precision Transcription Service for David Tao's 'Small Town Girl' Saxophone Arrangement by Mr. Chui, Three-Piece Set

Precision Transcription Service for David Tao's 'Small Town Girl' Saxophone Arrangement by Mr. Chui, Three-Piece Set

$10.00

CANDLE.LAB | Small Wax Melting Pot 180ml with Stainless Steel Measuring Spoon for DIY Scented Candles 26

CANDLE.LAB | Small Wax Melting Pot 180ml with Stainless Steel Measuring Spoon for DIY Scented Candles 26

$16.00

Chengdu University City Laboratory Exhaust Piping and High-Purity Gas Pipeline Engineering - Consultation Welcome

Chengdu University City Laboratory Exhaust Piping and High-Purity Gas Pipeline Engineering - Consultation Welcome

$33,610.00

Premium Factory Supply Decorative Chains - Pendant Light Chains, Advertising Sign Hanging Chains, Anti-Static Iron Chains, Small Iron Links

Premium Factory Supply Decorative Chains - Pendant Light Chains, Advertising Sign Hanging Chains, Anti-Static Iron Chains, Small Iron Links

$61.15

[Damai Holds Micro-Needle Hair Transplant Patent] Precision Eyebrow Transplant – Custom Aesthetic Design

[Damai Holds Micro-Needle Hair Transplant Patent] Precision Eyebrow Transplant – Custom Aesthetic Design

$12,797.60

Commercial Dumpling & Bun Filling Machine – Automatic Stainless Steel Vegetable Chopper

Commercial Dumpling & Bun Filling Machine – Automatic Stainless Steel Vegetable Chopper

$4,400.00

HVAC Fan VFD Control Cabinet, Central Air Conditioning Ventilation Equipment with Power Frequency to Variable Frequency Conversion Distribution Panel

HVAC Fan VFD Control Cabinet, Central Air Conditioning Ventilation Equipment with Power Frequency to Variable Frequency Conversion Distribution Panel

$1,238.00

Export Quality Original Bathroom Paint Pens, Yellow and Green (2-Pack), Draw on Tiles and Glass

Export Quality Original Bathroom Paint Pens, Yellow and Green (2-Pack), Draw on Tiles and Glass

$4.93

Imported Automotive Transmission Differential Bearing B39-4 580704A

Imported Automotive Transmission Differential Bearing B39-4 580704A

$338.00

Fully Automatic Carbon Steel and Stainless Steel Filter, Self-Cleaning Vertical Filter, Automatic Blowdown Filter

Fully Automatic Carbon Steel and Stainless Steel Filter, Self-Cleaning Vertical Filter, Automatic Blowdown Filter

$37,500.00

Sheepskin Rattle for Babies 0-3 Years - Chewable Intangible Cultural Heritage Handmade Toy with Solid Wood and Brass Shaker Stick, Newborn Gift Box

Sheepskin Rattle for Babies 0-3 Years - Chewable Intangible Cultural Heritage Handmade Toy with Solid Wood and Brass Shaker Stick, Newborn Gift Box

$12.78

Swiss ITI Dental Implant / Korean Imported Dentium Implant Package with Crown - Shanghai Hospital

Swiss ITI Dental Implant / Korean Imported Dentium Implant Package with Crown - Shanghai Hospital

$3,980.00

Yandi Retainer Storage Case - Double-Layer Drain & Soak Box for Invisible Aligners and Orthodontic Cleaning

Yandi Retainer Storage Case - Double-Layer Drain & Soak Box for Invisible Aligners and Orthodontic Cleaning

$30.50

Leaf-Shaped Template Stamp for Kids - Transparent Silicone DIY Mold with Sponge for Maple Leaf Rubbing and Painting

Leaf-Shaped Template Stamp for Kids - Transparent Silicone DIY Mold with Sponge for Maple Leaf Rubbing and Painting

$4.93

High-Speed Internal Clamping Double Diaphragm Coupling High Torque Servo Motor Leadscrew Module Elastic Coupler

High-Speed Internal Clamping Double Diaphragm Coupling High Torque Servo Motor Leadscrew Module Elastic Coupler

$367.30

Eye-Care Journaling Highlighters for Students - Colorful Markers for Note-Taking and Key Points

Eye-Care Journaling Highlighters for Students - Colorful Markers for Note-Taking and Key Points

$3.02

Natural Stone Abacus Beads with Large Holes 5*10mm White Crystal Rose Crystal Flat Beads Jewelry Accessories Semi-Precious Stones

Natural Stone Abacus Beads with Large Holes 5*10mm White Crystal Rose Crystal Flat Beads Jewelry Accessories Semi-Precious Stones

$1.50

Heavy-Duty Lifting Chain with Shackles at Both Ends - Manganese Steel Hoist for Pipes, Rebar, and Stones

Heavy-Duty Lifting Chain with Shackles at Both Ends - Manganese Steel Hoist for Pipes, Rebar, and Stones

$72.00

Industrial Large Roll Oil-Absorbent Paper, Jumbo Lint-Free Wiping Rolls, Cleaning Paper, Wholesale Industrial Jumbo Rolls

Industrial Large Roll Oil-Absorbent Paper, Jumbo Lint-Free Wiping Rolls, Cleaning Paper, Wholesale Industrial Jumbo Rolls

$150.00

5-Inch Flocked Scouring Pad, Stainless Steel Rust Removal and Polishing Disc, Circular Brush Cloth with Backed Flocking for Polishing

5-Inch Flocked Scouring Pad, Stainless Steel Rust Removal and Polishing Disc, Circular Brush Cloth with Backed Flocking for Polishing

$25.00

High-Temperature Fire-Resistant Cotton Incense Burner Mat, Flame-Retardant Pad for Stick Incense Boxes and Aromatherapy Burners, Heat Insulation for Burning Incense

High-Temperature Fire-Resistant Cotton Incense Burner Mat, Flame-Retardant Pad for Stick Incense Boxes and Aromatherapy Burners, Heat Insulation for Burning Incense

$2.98

80 Pairs Zhuji Ankle Socks, Solid Color All-Season Trendy Student Casual Sports Boat Socks, Disposable Short Socks

80 Pairs Zhuji Ankle Socks, Solid Color All-Season Trendy Student Casual Sports Boat Socks, Disposable Short Socks

$9.14

Smart Toilet Storage Rack for Bathroom, Multi-Tier Floor-Standing Organizer with Waterproof Tissue Holder

Smart Toilet Storage Rack for Bathroom, Multi-Tier Floor-Standing Organizer with Waterproof Tissue Holder

$273.00