Tube Amplifier Preamp - AIYIMA B2D1909

Audio Amplifiers
$429.99 $289.99
Tubes: 1 x 6n9p, 2 x 6p3p, 1 x 5z4p
output power : 7W x 2  (effective power , load resistor 8 ohm , 1khz , thd = 10%)
Frequency Response : 13 ~ 33k hz-3db ( load resistor 8 ohm , output power 1w effective value )
THD : 1.5% ( load resistor 8v, 1khz , output power 1w effective value )
SNR : >= 93db )
Power consumption of the whole machine: ≤80W
Input impedance : 100k ohm
Input sensitivity : 0.8vrms
Impedance : 4 ohm/ 8 ohm
Input voltage: 110v/ 220V
Product Details:
1. Tube amp must connected with speakers before turning ON. Strictly prohibit send signals to amp without connected loads (speakers) or load short circuit when the switch is ON. 
2. Too high or too low power supply voltage does irreversible harm to the amp,preferably less than 5% of the specified voltage. If your mains voltage exceeds this value, often best to use with the AC power supply.
3. Temperature is higher when tube amps working, placing attention to ventilation, cooling. 
4. In the boot or just shut down for a period of time (within 30 minutes) Do not spill liquid on the tubes.
5.  You should take about 100h time to operate the amp.RUN-IN to the amp gives it's best and stable during the first 100h use time the sound maybe is not the best,you can also use your own run-in method. 
6. If you donot sure how to plug the tubes, please contact us before try it
Packing List :
1 x tube amplifier

All items in store may take 2 to 5 business days to process.  Please add processing time to your shipping estimate below.

Here is an estimate of the shipping times.  Due to factors that often affect international shipments, such as holidays, customs, and weather delays, we can only offer an estimate of shipping times. 


Estimated Shipping Time

United States

10-30 business days

Canada, Europe

15-40 business days

Australia, New Zealand

15-45 business days

Mexico, Central America, South America

20-60 business days 

Middle East (UAE, Saudi Arabia)

20-40 business days


IMPORTANT: We are not responsible if a package is undeliverable because of missing, incomplete, or incorrect destination information. Please enter the correct shipping details when checking out. If you realize you have made an error, simply e-mail us at as soon as possible. However there is a 72-hour wait list for email, therefore, if your order has left our warehouse within 72 hours, it is out of our control.
Aiyima is not responsible for destination country tax and/or any duty charge that may incur. Customers will be held accountable for any restrictions, duties, taxes, and any other fees collected from the destination country.
Aiyima will not be responsible for any Duties, Taxes, or Customs fees under any circumstances.
If the order arrives in your country and...
• The customer refuses to accept the package
• The number of attempts is made in the country of destination to deliver the package.
Aiyima reserves the right to abandon the package(s) and will not be responsible for any refund.

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Tube Amplifier Preamp - AIYIMA B2D1909
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