does this circuit have dc blocking caps?

I don't know since I have never seen a schematic for this product. Why not, just assume none were provided and install them external to the board .... just to be safe rather than sorry !

Can this be used with an electret mic?

YES, but only as far as for amplification. You will need to come up with the voltage to be applied to the Mike Element. Might I mention that his board has no easy means of gain adjustment. I think there are other Pre-Amplifier boards that provide the voltage to supply the element. and pads to solder on adjustment resistors to select gain.

What is the input impedance

Impedance is not mentioned, check out the Velleman K-1803 which was my second purchase. mono pre-amp. Works like a champ !

How do I verify operation? I have tried two different boards with two different microphones. I am not getting any output.

my has a heat sink under not all the board work the same waith till i get mine and try to tell a is wirwd

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Acxico 3Pcs AD828 Stereo Dynamic Microphone Preamplifier Board Pickup Module DC 3.8V-15V MIC Preamp Module

Product ID: 386936871

⚡3.8V-15V power range

🎸Ultra-small size

🔊2-channel design

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Description

🎶 Elevate Your Audio Game!

EFFORTLESS SETUP - Simple installation with a single lithium battery.
COMPACT POWERHOUSE - Ultra-small design fits seamlessly into any setup.
UNLEASH YOUR SOUND - Experience crystal-clear audio with minimal noise interference.
HIGH QUALITY COMPONENTS - Equipped with AD828 op-amp for superior performance.
VERSATILE COMPATIBILITY - Perfect for guitars, erhu, and more musical instruments.

The Acxico 3Pcs AD828 Stereo Dynamic Microphone Preamplifier Board is a compact and efficient audio solution designed for musicians. With a dual-channel setup and a wide voltage range of 3.8V-15V, this preamp module ensures high-quality sound reproduction while minimizing environmental noise. Ideal for various instruments, it’s a must-have for any serious audio enthusiast.

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115.94 DT

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In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

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TrustScore 4.5 | 7,300+ reviews

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Item Weight	9 g
Package Dimensions	12.19 x 7.9 x 1.19 cm; 9 Grams
Manufacturer reference	LB 011
Color Name	3PCS

Acxico 3Pcs AD828 Stereo Dynamic Microphone Preamplifier Board Pickup Module DC 3.8V-15V MIC Preamp Module

Description

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Common Questions