After the microphone and music are amplified, they can be output independently or mixed output. There are three output ports in total, and the mixed output port can directly drive headphones to listen. The 3.5mm interface with bias can be used with electrets and common condenser microphones, and the 6.5mm interface is a dynamic microphone, which can amplify wired and wireless microphones. The 6.5 port of the dynamic microphone is amplified by 75 times, the 3.5 port condenser microphone is amplified by 22 times, and the stereo music input 3.5 port port is amplified by 5 times. The power supply is DC 5-12V, and the new rail-to-rail operational amplifier MC33202 is used. Please use a high-quality low-ripple power supply, as the power supply is not good enough to easily produce . The power interface is DC5.5x2.1, inside + outside - not include the power supply. The input 3.5mm interface has a built-in bias voltage and can be connected to an electret microphone or a 3.5 interface condenser microphone; (What is an electret microphone? You can search for relevant knowledge on the Internet. This type of microphone is widely used in various electronic products. It is everywhere around us) The output 3.5mm interface can be connected to the microphone interface of other audio equipment or line input interfaces such as AUX and LINE. It cannot be connected to headphones for listening; Amplification gain is adjustable from 0-20db; This machine has a built-in lithium battery, capacity: 150mah. It can be using a mobile phone charger. It can be used continuously for more than 10 hours on a single charge. size: about 5.5 x 4 x 2.2cm Material: Metal+Plastic colour: black Package Contents: 1 x amplifier 1 x Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
After the microphone and music are amplified, they can be output independently or mixed output. There are three output ports in total, and the mixed output port can directly drive headphones to listen. The 3.5mm interface with bias can be used with electrets and common condenser microphones, and the 6.5mm interface is a dynamic microphone, which can amplify wired and wireless microphones. The 6.5 port of the dynamic microphone is amplified by 75 times, the 3.5 port condenser microphone is amplified by 22 times, and the stereo music input 3.5 port port is amplified by 5 times. The power supply is DC 5-12V, and the new rail-to-rail operational amplifier MC33202 is used. Please use a high-quality low-ripple power supply, as the power supply is not good enough to easily produce . The power interface is DC5.5x2.1, inside + outside - not include the power supply. The input 3.5mm interface has a built-in bias voltage and can be connected to an electret microphone or a 3.5 interface condenser microphone; (What is an electret microphone? You can search for relevant knowledge on the Internet. This type of microphone is widely used in various electronic products. It is everywhere around us) The output 3.5mm interface can be connected to the microphone interface of other audio equipment or line input interfaces such as AUX and LINE. It cannot be connected to headphones for listening; Amplification gain is adjustable from 0-20db; This machine has a built-in lithium battery, capacity: 150mah. It can be using a mobile phone charger. It can be used continuously for more than 10 hours on a single charge. size: about 5.5 x 4 x 2.2cm Material: Metal+Plastic colour: black Package Contents: 1 x amplifier 1 x Charging Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
Sellers offer a range of delivery options, so you can choose the one that’s most convenient for you. Many sellers offer free delivery. You can always find the postage cost and estimated delivery date in a seller’s listing. You'll then be able to see a full list of delivery options during checkout. These can include: Express delivery, Standard delivery, Economy delivery, Click & Collect, Free local collection from seller.
Your options for returning an item vary depending on what you want to return, why you want to return it, and the seller's return policy. If the item is damaged or doesn't match the listing description, you can return it even if the seller's returns policy says they don't accept returns. If you've changed your mind and no longer want an item, you can still request a return, but the seller doesn't have to accept it. If the buyer changes their mind about a purchase and wants to return an item, they may need to pay return postage costs, depending on the seller's return policy. Sellers can provide a return postage address and additional return postage information for the buyer. Sellers pay for return postage if there's a problem with the item. For example, if the item doesn't match the listing description, is damaged or defective or is counterfeit. By law, customers in the European Union also have the right to cancel the purchase of an item within 14 days beginning from the day you receive, or a third party indicated by you (other than the carrier) receives, the last good ordered by you (if delivered separately). This applies to all products except for digital items (e.g. Digital Music) that are provided immediately to you with your acknowledgement, and other items such as video, DVD, audio, video games, Sex and Sensuality products and software products where the item has been unsealed.
Sellers have to offer a refund for certain items only if they are faulty, such as: Personalised items and custom-made items, Perishable items, Newspapers and magazines, Unwrapped CDs DVDs and computer software. If you used your PayPal balance or bank account to fund the original payment, the refunded money will go back to your PayPal account balance. If you used a credit or debit card to fund the original payment, the refunded money will go back to your card. The seller will effect the refund within three working days but it may take up to 30 days for Paypal to process the transfer. For payments funded partially by a card and partially by your balance/bank, the money taken from your card will go back to your card and the remainder will return to your PayPal balance.