This machine has two microphone input channels. The overall design is based on room requirements. The Kara OK effect processor uses 24 bit. The 96 khz high-speed ADC DAC chip handles human voice effects, making the singing more natural and beautiful
MP3 player with USB stick and memory card, FM radio with automatic channel  search function
Built-in MP3 player with infrared remote control receiving function
Built-in bluetooth Receiving Function
This machine has perfect protection measures
Output short circuit protection system
Overheat overload protection

Rated voltage: DC12V/AC 220V
Rated power: 50W+50W
Max power: 400W+400W
Resolution: 20-20 KHZ
Distortion rate: 0.4
Impedance: 4-16 ohms
Signal to noise ratio: ≥80dB
Effective frequency range: 20HZ-20KHZ
Input sensitivity: 150-300mv
Overload source electromotive force: ≥1.5V
Tone adjustment:
Degree of separation: ≥54dB
Crosstalk attenuation: ≥53dB
Channel gain difference: ≤1dB
Maximum noise: 6mV
MIC input sensitivity: 10mV
MIC overload source electromotive force: ≥350mV
MIC frequency response: 25Hz-15KHZ
Channel: 2.0 channel
Output connection: Left and right channel power output interface
Dimensions(mm): 200(L)X190(W)×55(H)
Attachment: Remote control
Package Included:

1 x bluetooth Amplifier
1 x Remote Control
1 x Manual

(1) FREE Shipping 10 - 15 business days, (2) Standard Shipping 7 - 12 business days.

Shipping and Delivery Estimates

We ship in-stock orders as soon as possible. This is often within two business days, but there are situations where it may take longer. All estimates are based on business days.


(1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.

(2) Business days do not include Saturday/Sunday and any public holidays.

(3) These estimates are based on normal circumstances and are not a guarantee of delivery times.

(4) We are not responsible for the failures or delays in delivery resulting from any force majeure event, such as natural disaster, bad weather, war, customs issues, and any other event beyond our direct control.

Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can't offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

for more information please visit our Refunds & Returns Policy page.

Not enough items available. Only [max] left.
Add to WishlistBrowse WishlistRemove Wishlist
Shopping cart
Free Shipping for all orders over [money]
Almost there, add [money] more to get FREE SHIPPING!
Congratulations! You've got free shipping!

Your cart is empty.

Return To Shop

Add Order NoteEdit Order Note
Add A Coupon

Add A Coupon

Coupon code will work on checkout page

BT-309A 220V 800W 2CH Home Stereo bluetooth Amplifier Support USB FM AUX MIC Microphone

$157.99 $104.99