Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Chip Model | MAX9814 |
| Operating Voltage | 2.7V - 5.5V |
| Gain Setting | Adjustable via Resistor (Default 40dB) |
| Frequency Response | 20Hz - 20kHz |
| Signal-to-Noise Ratio | Typically 92dBA |
| Microphone Type | Electret Condenser Capsule |
| Output Interface | Analog Audio Out |
| PCB Dimensions | 22mm x 14mm |
| Mounting Hole Diameter | 3mm |
| Application | Voice Recognition, Recording, IoT Projects |
Anonymous
Mar 22, 2026
Rating: 4/5
Good value, minor soldering needed
The performance is solid for sensor applications. I had to solder my own header pins as they weren't pre-attached, but that's standard for this type of module. Very sensitive pickup.
Anonymous
Mar 06, 2026
Rating: 3/5
Decent but sensitive to power noise
The module itself is fine, but it picked up some electrical noise from my breadboard power rail. Once I moved it to a clean regulated supply, the output was much cleaner.
Anonymous
Mar 06, 2026
Rating: 4/5
Works as described
Easy to integrate into my Raspberry Pi setup. The voltage range is flexible which helped when powering it from a 3.3V pin. Just ensure you have a decent power supply to avoid hum.
Anonymous
Mar 06, 2026
Rating: 5/5
Perfect for Arduino Voice Projects
This module works flawlessly with my Arduino Uno. The sound quality is surprisingly clear for the price point, and the automatic gain control handles varying voice volumes well without clipping.
Anonymous
Mar 05, 2026
Rating: 5/5
Excellent Signal Clarity
Used this for a home automation voice trigger. The noise floor is very low, and it picks up speech clearly from about 3 meters away. Highly recommended for DIY audio sensors.
Anonymous
Mar 04, 2026
Rating: 5/5
Best budget mic amp
I've tested several modules in this category, and the MAX9814 chip consistently outperforms competitors in dynamic range. Great for prototyping voice interfaces.
Q: Does this module come with the microphone capsule included?
A: Yes, the module includes an integrated electret microphone capsule ready for use.
Q: Can I run this directly off a 3.3V ESP32 pin?
A: Absolutely. The operating voltage range is 2.7V to 5.5V, so it is fully compatible with 3.3V logic and power systems like the ESP32.
Q: What is the distance range for clear voice capture?
A: For clear voice recognition, it typically performs best within 1 to 3 meters in a quiet indoor environment, depending on your specific gain settings and ambient noise.
Q: Is the output digital or analog?
A: The output is analog. You will need to connect it to an ADC (Analog-to-Digital Converter) pin on your microcontroller to process the signal digitally.
Q: How do I adjust the gain if 40dB is too loud?
A: The gain is set by an external resistor on the board. You can replace the default resistor with one of a different value according to the MAX9814 datasheet to lower or increase the gain.
Biliansheng Hair Transplant – No-Shave Technique for Eyebrows, Beard, Widow's Peak, and Sideburns; Aesthetic Design and Hair Restoration
$2.55
Oil Pastel Blending Stumps and Smudging Tools for Painting, Mixing, and Highlighting
$4.76
Jingyangge Calligraphy Wool Felt Arm Rest Pad, Mini Felt Mat for Chinese Painting, Inkstone Protector, Creative and Exquisite Practice Mat
$9.90
Concrete Mixing Plant Gantry Car Wash Platform, Shiji Runde Tunnel-Style Gantry Car Wash Machine
$20,000.00
Baohong Watercolor Paper Artist Grade 1/2/Full/Half Sheet, Student Grade 300g 100% Cotton Pulp, Rough/Medium/Fine Grain Roll
$33.00
Metal Garden Bed - Large Size Vegetable Planter for Balcony and Home Gardening
$1,033.00
Custom Travertine Stone Signage with Natural Marble 3D Lettering and Spherical Characters for Cafes, Clothing Stores, and Studios
$170.00
CANDLE.LAB | Realistic Cookie Series DIY Aromatherapy Plaster Candle Diffuser Handmade Silicone Mold
$12.00
Zhao Mengfu Calligraphy Copybook - Running Script 'Qingyun Zhi', Red-Traced Practice Paper for Beginners in Calligraphy
$15.80
Aesthetic Street Scene Watercolor Line Art for Coloring, 16K Landscape Watercolor Coloring Book, Painting Book, Cotton Pulp Watercolor Album
$15.80
Warehouse Nitrogen Sealing Generator - High-Purity Food-Grade PSA Skid-Mounted Container Equipment
$959.00
Ransheng UV Resin Gel, UV Crystal Glue for Gemstones, Ear Cuff Sealing, Dried Flower Molds, DIY Quick-Dry UV Epoxy
$44.00
Dairy Processing Production Line, Pasteurized Milk Equipment, Low-Temperature Sterilization and Fermentation Machine for Cow and Camel Milk
$8,203.00
Blue Lint-Free Wiping Paper - Industrial Large Roll Oil-Absorbent Shop Towels
$62.00
Green-Red AB Glue 5-Minute Fast-Drying Acrylate AB Glue for Glass Ceramic Metal Structural Adhesive Quick Set
$18.13
![Northern Wei Dynasty Inscriptions: Twenty Pieces from Longmen [Rubbing] - Original Size Wei Bei Calligraphy Copybook from Luoyang Longmen Grottoes](https://www.gosteppe.com/cache/small/product/270189/legacy-main-0c626807b3c375d4d5d6a89b.webp)
Northern Wei Dynasty Inscriptions: Twenty Pieces from Longmen [Rubbing] - Original Size Wei Bei Calligraphy Copybook from Luoyang Longmen Grottoes
$40.30
Ru Kiln Celadon Ceramic Brush Washer Set - Large, Medium, and Small Ink Dishes for Chinese Calligraphy and Painting Supplies
$88.80
Multi-Layer Over-Toilet Storage Rack for Bathroom, Laundry Room, and Balcony - Floor Standing Organizer
$44.96
Wrought Iron Solid Stainless Steel Letters – Minimalist Space Signage, Custom Metal Advertising Letters for Storefronts & Feature Walls
$10.00
Shimoyama 304 Stainless Steel Telescopic Rod - Kitchen Sink Cutting Board Support Rack for Dish Drying and Cloth Hanging
$74.80
Modified Wheel Lug Nuts Forged Steel High Strength for Lafesta Regal CT4 Civic Accord Crown Mazda3
$209.00
Milk Separator Machine - Electric Cream Skimmer and Butter Churn for Home and Commercial Use (Cow and Goat Milk)
$946.00
Three-Phase Auto-Reclosing Leakage Circuit Breaker - Smart Phase Loss, Undervoltage, Overload Protection with 485 Communication for PV Grid Connection
$693.20
Multi-Function Vegetable Cutter Commercial Electric for Cafeterias Fully Automatic Chili Scallion Chopper Imitation Hand-Cut Leek Machine
$1,600.00
Zhengtong ZT30 Fog Cannon - Micron-Level Humidification & Cooling Spray System for Steel Mills
$6,000.00
100Pcs Custom Clothing Hang Tags Personalized Plastic Securi
$125.94
Wall-Mounted Bathroom Storage Shelf, No-Drill Organizer for Sink, Shower, and Toilet Area
$5.76
Thickened 5mm Wool Felt Mat for Calligraphy Practice - Premium Writing Pad for Students and Beginners, Part of Four Treasures of the Study Set
$2.80
Multi-Function Car Tire Stone Removal Tool with Hook for Picking Out Rocks
$4.06
Label Stripping Machine – Semi-Automatic Unit for Beer, Baijiu, and Glass Bottle Label Removal; Custom Manufacturing Available
$19,980.00
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
