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Electronic Pre-amp Preamplifier
Tube Preamplifier Board Home Tube DIY Suite Electronic Pre-amp Preamplifier Buffer Valve AC 12V
Tube Preamplifier Board Home Tube DIY Suite Electronic Pre-amp Preamplifier Buffer Valve AC 12V
Tube Preamplifier Board Home Tube DIY Suite Electronic Pre-amp Preamplifier Buffer Valve AC 12V
Tube Preamplifier Board Home Tube DIY Suite Electronic Pre-amp Preamplifier Buffer Valve AC 12V

Tube Preamplifier Board Home Tube DIY Suite Electronic Pre-amp Preamplifier Buffer Valve AC 12V

Regular price $15.99 Sale price $24.99 Unit price per
Tax included. Shipping calculated at checkout.

100% brand new and high quality!
With reasonable optimization, the performance is more stable, and the performance of the tube is increased by 10%.
This machine uses a single 12V AC input, so you don't have to worry about finding a high voltage power supply.
This board comes with a booster, allowing you to enjoy the charm of high-voltage tubes under low power.
Can effectively filter the digital flavor, the human voice is better.
Bold and strong, cost-effective!

1, AC 12V input: DC3.5/5.5*2.5 mm socket, AC 12V power adapter, if you want to use a plugless AC 12V transformer, you need to solder the power line on the circuit board. 
Remember: you can't use DC power input, otherwise it won't work!
2, left channel input / right channel input: for the audio signal input terminal, can be connected to mobile phones, computers, M3, MP4, and other music players.
3. Left channel output/right channel output: It is the audio signal output terminal, which can be connected to the audio signal input end of the power amplifier and power amplifier board to provide bizarre music enjoyment to the later stage power amplifier!
4, power switch / volume knob: turn the knob counterclockwise just start to reduce the volume, when the volume is off to the minimum, if you continue to rotate, until "tick", then the power is off, 
the light is off; in the closed state, Turn the knob clockwise and hear a “tick” sound. The light is on, indicating that the power has been turned on. 
At this time, the volume is the smallest, and then continue to rotate clockwise to increase the volume.

Material: plastic, metal
Channel type: 2.0/stereo
Power input: AC AC12V 0.8A / 5.5*2.5 plug
Knob function: power switch / volume adjustment
Size: 77 x 75 x 52MM(approx)
Color: green

1 pc x Tube preamplifier

1. Due to the light and screen difference, the item's color may be slightly different from the pictures.
2. Please allow 1-2 cm differences due to manual measurement.

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Shipping Timeframe:

US, Australia, New Zealand: 2~3 weeks  France: 2~4 Weeks

UK, Germany, Canada: 3~5 weeks  Other European Countries: 3~5 Weeks

Asian Countries: 3~5 Weeks       Others: 3~8 Weeks·

 Items will be shipped in within 4 days after payment is received. 

Items are shipped from China using Post Air Mail Registered (HongKong Post, Sweden Post or Singapore Post).

The Parcel Status Can Be Tracked Via Post Official Website or 8-10 Days Later After Sending.The Real Delivery Date Is Subject to the Custom & Local Logistic Status.

In Case Express Service Required, Please Contact Us About the Detailed Freight.

If You Don't Receive the Item On Time, Please Take Time to Contact us.


We're not responsible for any custom duty or import tax.

 If you are not satisfied with the item you received, Please contact us for parcel return & payment refund.The returned parcel shouldbe sentback in original package (or well protected)in14days after the receipt.

If item is founddefective in 1 months, We will send you a replacement free of chargeor arrange the refund after the receipt of the defective item. But you have to pay for the returned freight.

We strive for 100% customer satisfaction on every sale we complete. If, for any reason you are not satisfied with your purchase, please contact us before leaving neutral or negative feedbacks.We'll work with you to solve the problem. We'll automatically leave positive feedbacks after received positive feedbacks from you.


We are family owned business, and we have served thousands of customers from all over the world. Our products are direct from factory, so we can provide quality items at very competitive price.


If you have any question, please contact us by the contact seller now button, leave us message or send us emails. Most emails are responded within 24 business hours. We work 5 days a week (Note: Buyers who use free email like AOL, Yahoo, the reply email may fall into your junk mail box. Please send email directly or try send email by other account).

Packaging Details
  • Unit Type: piece
  • Package Weight: 0.087kg (0.19lb.)
  • Package Size: 13cm x 13cm x 4cm (5.12in x 5.12in x 1.57in)

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