Features:
- Original 6J1 tubes and original NE5532 adopted
- Original 680UF / 16V used as main filter capacitors and imported capacitors 1UF used as the coupling capacitors
- High-precision chip resistors ensure good SNR of the whole machine
- 1.6mm premium PCB with 2.0OZ copper and spraying process ensures good passing performance
- Gold-plated RCA sockets as input and output terminals are durable and beautiful
- QCC3008 5.0 support for APTX lossless playing
- With reasonable wiring, the board operates with low current noise
- Adjustable volume of treble and bass

Applications:
- Compatible Audio Inputs: It can be connected to your MP3, laptop PC, desktop PC, HIFI player, mobile phone, DVD and the like.
- Compatible Audio Outputs: It can be connected to your power amplifier, active speakers, etc.

Front Panel Design:
- Power Switch
- Bass Knob
- Treble Knob  
- Indicator
- Volume Knob

Rear Panel Design:
- Audio Input Interfaces for Left & Right Channel
- Audio Output Interfaces for Left & Right Channel
- DC12V Power Socket (5.5*2.1)

Basic Parameters:
- Power Supply: DC12V 2A (DC12V regulated power supply is needed. It cannot be higher than 12V)
- N.W.: 0.4kg

Technical Parameters:
- Distortion: 0.03%
- SNR: 100dB
- Bass: ±13dB
- Treble: ±7dB
- Frequency Response: ±1.5 (20Hz-20KHz)
- Input Interface: RCA
- Output Interface: RCA
- Operation: Turn the power switch, rotate treble/bass knob and volume knob
- DC Power Supply: 12V 2A

Package Included:
- 1 x Tube Preamplifier with Antenna

Note:
- Items with different colors will be delivered at random. Thank you for your understanding!
- This is a tube preamplifier instead of power amplifier. Please use it together with a post-amplifier or active speakers. Please not directly connect it to passive speakers, speakers, headphone as a power amplifier. It is not for uses in cars for it might burn out due to unstable vehicle voltage.
- High quality audio cables and power supply are recommended, because ordinary audio cables or power supply is not well filtered, and noises are likely to occur.
- Pleas make sure that your sound source is perfect for the device.
- Please ensure that the tubes are well installed before powering on.

Package: Normally we use the standard exporting packaging. We also can according to clients' request .

 Shipping : 

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier  we are co-operating at present.

2. By Air: Delivery from the Shanghai airport to customers’ destination city air port.

3. By Sea: Delivery from the Shanghai sea port .

Q1. Can I have a sample order?

A: Yes, we welcome sample order to test and check quality.

Q2. What about the lead time?

A: Samples arrived often need 3-5 days.

Q3. Do you have any MOQ (minimum order quality)limit?

A: Low MOQ, 1pc for sample checking is available.

Q4. How do you ship the goods and how long does it take to arrive?

A: We often ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping is also optional.

Q5. How to proceed an order?

A: Initially, let us know your requirements or application. Besides, We quote according to your requirements or our suggestions. Thirdly, customers confirms the samples and places deposit for formal order. Finally, We arrange the production.

Q6. Is it acceptable to print my logo on the product?

A: Yes. Please inform us formally before our product and confirm the design firstly based on our sample.

Q7: Do you offer guarantee for the products?

A: Yes, we offer one-year warranty for our products.

Q8: How to deal with the flaw?

A: Our products are produced in strict quality control system and the percent of pass is often maintained over 99.8%

Please do not hesitate to contact me if you need any further information

Whatsapp/Tel/Wechat: 8619902906050

Web: 

Address: Room 303 Building 2,Youpin Cultural and Creative Park,Zhangkeng,Minzhi Street,Longhua District,518131,Shenzhen,China(Mainland)