Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Chip Model | MAX9814 |
| Operating Voltage | 2.7V - 5.5V DC |
| Gain Control | Automatic Gain Control (AGC) |
| Signal-to-Noise Ratio | Typically 90dB |
| Frequency Response | 20Hz to 20kHz |
| Microphone Type | Electret Condenser Capsule |
| Output Interface | Analog Audio Out |
| PCB Dimensions | 16mm x 12mm |
| Mounting Hole Diameter | 2.5mm |
| Application Scope | Voice Recognition, Recording, IoT Projects |
Anonymous
Mar 29, 2026
Rating: 5/5
Saved my semester project
I needed a reliable mic amp quickly and this arrived on time. The documentation online helped me get it running with Raspberry Pi in under an hour.
Anonymous
Mar 26, 2026
Rating: 5/5
Compact and Reliable
Used this for a home automation voice trigger. The small form factor fit perfectly inside my 3D printed enclosure. Power consumption is low as advertised.
Anonymous
Mar 21, 2026
Rating: 5/5
Perfect for Arduino Voice Projects
The AGC feature works flawlessly. I connected this to my Arduino Uno and the voice clarity is impressive even when moving away from the mic. Very easy to wire up.
Anonymous
Mar 12, 2026
Rating: 4/5
Good for educational kits
Bought ten of these for our workshop. Most worked perfectly out of the box. One had a loose pin but was easily soldered back. Great for teaching signal processing basics.
Anonymous
Mar 05, 2026
Rating: 4/5
Great value, minor noise floor
For the price, this module is unbeatable. There is a slight hiss if you max out the gain in a quiet room, but for normal speech detection, it performs excellently.
Anonymous
Mar 03, 2026
Rating: 5/5
Superior AGC performance
Unlike cheaper modules without AGC, this handles loud shouts and quiet whispers without clipping or disappearing. Highly recommended for any voice interface.
Q: What is the output impedance of the audio signal?
A: The output is designed to drive high-impedance inputs typical of microcontroller ADCs, generally around 2kOhms.
Q: How long are the header pins if I want to mount this flush?
A: The standard headers are approximately 11mm tall. For flush mounting, we recommend desoldering them and using short pin headers or soldering wires directly.
Q: Is there a way to disable the Automatic Gain Control?
A: No, the MAX9814 chip has fixed AGC functionality that cannot be disabled; it is designed to maintain consistent output levels automatically.
Q: Does this module come with the microphone capsule included?
A: Yes, the module includes a pre-soldered electret microphone capsule ready for use.
Q: Can I power this directly from a 3.3V pin on an ESP32?
A: Absolutely. The operating voltage range is 2.7V to 5.5V, so 3.3V is within the safe operating limits.
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
$9.14
Smart Toilet Storage Rack for Bathroom, Multi-Tier Floor-Standing Organizer with Waterproof Tissue Holder
$273.00
Yihuashu Calligraphy Felt Mat - Thickened Grid Cloth for Student Practice, Brush Writing Pad
$1.98
![Xiankan Yunshu [Danran] Ceramic Brush Washer - Hand-Painted Elegant Lily Design under Glaze for Calligraphy Supplies](https://www.gosteppe.com/cache/small/product/269142/legacy-main-f8acbab3a83eee11ff108718.webp)
Xiankan Yunshu [Danran] Ceramic Brush Washer - Hand-Painted Elegant Lily Design under Glaze for Calligraphy Supplies
$32.90
Chunfei Grocery Store Commuter Hard Fork Low-Step Mountain Bike for Road, City, Suburb, School, and Outings
$2,224.64
Zhang Xiaofeng 'Fu Lu' Hotpot Inkstone Set – Covered Ceramic Ink Well for Calligraphy and Chinese Painting
$38.00
Invisalign Orthodontic Retainer Case, Portable Storage and Cleaning Box for Aligners and Dentures
$12.30
Natural 7A Lavender Loose Beads Single Round Bead DIY Amethyst Spacer Beads Jewelry Making Semi-Finished Accessories
$0.88
Paint Brush Cleaner - Mini Toilet Style Rinser for Watercolor and Gouache, Art Supply with Circulating Water System
$16.90
Traditional Wooden Rattle Drum with Sheepskin Head for Early Education, Visual Tracking and Hearing Training for Newborn Boys and Girls
$10.80
Car Tire Stone Removal Hook, Stainless Steel Multi-Function Tool for Cleaning Pebbles from Tires
$6.21
Factory Direct Mining Round Link Chains - High Cost-Performance Lifting Chains for Mining Applications
$153.00
Hangzhou Stomatological Hospital Dental Implant Initial Consultation Package – CT Scan, Missing Tooth Exam, and Custom Implant Plan Design
$1.00
Rockschool Acoustic Guitar Method Book (Chinese Edition) – Folk & Rock Guitar Grading Curriculum for Schools
$145.00
Commercial Food Warmer Cabinet, Small Heating Thermostat Display Counter for French Fries, Egg Tarts, Enlarged Chestnuts, and Fried Chicken
$334.00
Natural Green Peridot Crushed Stone, Small Raw Particles for Demagnetizing Energy, Aquarium Landscaping DIY Accessories
$8.50
3M 5-Inch Flocked Abrasive Disc with Hook-and-Loop Backing – Polishing Pad for Angle Grinders, Rust Removal & Cleaning
$3.20
Children DIY Art Rubbing Stick Round Painting Sponge Brush Graffiti Stamp Tool Kindergarten Rubbing Materials
$2.61
Over-Toilet Storage Rack for Bathroom - Organizer for Tissue, Toiletries, and Body Wash
$23.46
Magbase Cable Organizer with Dual Strong Magnets for Car, Office, and Home - Holds Power Cables, Ethernet, and Charging Cables
$24.90
Multi-Purpose Industrial Wiping Cloth 30*35 - Lint-Free Oil-Absorbent Paper for Aviation, Metro, and Rail Systems
$98.00
Commercial Electric Dicing Machine - Multi-Function Slicer for Carrots and Potatoes
$852.00
![[Single Pack] Handwoven Bird Nest Drop Net Cotton Rope Crochet Fruit Mesh Bag Storage Organizer](https://www.gosteppe.com/cache/small/product/269122/legacy-main-636b79526345e5fcd94b7ff1.webp)
[Single Pack] Handwoven Bird Nest Drop Net Cotton Rope Crochet Fruit Mesh Bag Storage Organizer
$10.36
Car Tire Lug Nuts - External Hex Cone Seat Wheel Bolts for Custom Rims
$80.00
Infant Sheepskin Rattle Baby Toy for Courage Building, Solid Wood Unpainted Chewable Glue-Free Version for Audio-Visual Grasping Early Education
$18.25
New Transparent Heat-Preserving Display Case for Roast Duck - Commercial Crispy Pork Belly Warmer with Eco-Friendly Design
$636.00
Electric Watercolor Spray Pen Children Hand-painted Color Pa
$46.55
Meiyike Water-Soluble Fertilizer with Major Elements – Hua Duo Duo No.1, No.2, No.10 Formulas, High Nitrogen, Phosphorus, Potassium Specialized Compound Fertilizer
$49.34
Waterproof Swim Bag, Wet Clothes Storage Tote with Handle, Large-Capacity Outdoor Hot Spring Pouch Dedicated for Mobile Phones
$59.96
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[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)
