Amplifier Board - AIYIMA B2D353

Audio Amplifiers
$33.99 $21.99

Performance parameters:

Power supply voltage: Dual AC 18V (the max voltage Canrsquot exceed Dual AC 19V, no less than 18v, otherwise the tube not bright, the sound distortion. If you need to use AC 12v, need to modify the filament buck resistor 2.2 ohm, then output power will be slightly lower)

Headphones Amp/Pre-Amp output: magnification about 0.8times

LM1875T amplifier output power: typical 20W (Max 30W)

Speaker impedance: 4Omega-8Omega

Total harmonic distortion: <0.04%

SNR: 105dB

Frequency response: 14Hz-100kHz

This product uses 6j1 tube for pre-level lm1875 amplifier, with headphones function. the sound more sweet, soft. Better listen than lm3886, tda7294 .

music fax X-10D circuit principle design, and optimize reasonable on it, more stable than the original machine performance, the tube to play increased by 10%.

This machine uses Dual AC 18V input, enjoy yourself in the low power supply.

Power Working principle: turn on power supply, tube filament begin heat, then boost from the zero voltage begin to boost, when tube filament hot, the boost is just boost finished, so this is the same with the bile rectification, 4pcs 470UF capacitor filter is very clean, excellent power supply system wonrsquot noise, DC 12V power supply the filament, need the two tube filament is in series, the use of DC filament is also to reduce noise.

Headphones amplifier/ Pre-amp output function: 6j1 tube pre output signal can also drive headphones, but slightly smaller than the digital audio sounds.

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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Amplifier Board - AIYIMA B2D353
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