Bluetooth 5.0 6K4 Vacuum Tube Amplifiers Audio Board Bile Preamplifier Preamp

Descrtion:

The product is a preamplifier. It is not audio amplifier. It needs to be connected to an active speaker and a rear amplifier.

Power supply: DC12V 2A (Without supply power) Audio input: Bluetooth/ AUX (connected to MP3, computer CD, DVD, mobile phone, etc. ) Audio output: connected to amplifier, active speaker and other signal input Size (L*W*H): 137*104*41MM (without tube height) With and ba adjustment Specifications: Black with Bluetooth 5.0/ Sier with Bluetooth 5.0 Feature: 1. Using  6K4 tube, Bluetooth 5.0 version 2. The main filter capacitor is from 1000UF/25V, and the coupling capacitor is with 1UF Phils capacitor. 3. The resistor uses a five-ring 1% metal resistor to ensure a good signal-to-noise ratio. 4. The adopts 1.6mm thick double-sided sheet, 2.0 oz copper thickne, and the whole proce of tin-spraying ensures the good paing performance of the current. First-cla quality. 5. The output is made of gold-plated RCA lotus seat, which is durable and beautiful! 6. The board layout is reasonable, beautiful, and the current is small. Note: 1. The product is a preamplifier, not a power amplifier. It should be used with a post-amplifier or an active speaker. It is not allowed to directly connect paive speakers, speakers and earphones to the power amplifier; if it is not used, the car will be burnt if the voltage is unstable. 2, The general audio line or power supply filtering is not good, the probability of the bottom noise current is very large, it is recommended to use a good audio cable or power supply. 3. Make sure that there is no problem with your own audio source. The preamplifier has its own preamplifier function. If the audio source itself has noise, then the preamplifier will only amplify its noise. Please use a good sound source test. 4. Check if the tube is plugged into the base. Please insert the tube and the base. Be sure to insert the tube in case of power fai.

Package list:

1Pcs 6K4 Tube Amplifier Bile Preamplifier

About shping
Shping and Packaging All it will be double checked and well packed before sending.It will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for e areas,it may take a little longer). 

Special Announcement:
Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resoe the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .

Your 100% satisfaction is very ant to us
If the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.