Under what circumstances should I equip my headphones with an amplifier?

 

There are three kinds of situations for the ear amplifier. One is the sound source used. For example, there is no earphone dedicated output jack on the CD/DVD player. At this time, a headphone amplifier can be equipped to output from the audio line of the CD/DVD player (LINE OUT). Use two signal wires to connect to the audio input jack of the amplifier.

 

The second case is that a low-sensitivity, high-impedance earphone, if you can't push it with an existing audio source such as a Walkman, you should also purchase a headphone amplifier.

 

The third case is a medium-to-high-end earphone. Using the existing headphone jack to launch such a type of earphone can not exert the potential of the earphone. Adding a headphone amplifier can further improve the sound quality. In this case, we should consider adding A high quality headphone amplifier.

 

How to buy tube headphone amplifier cargo transistor headphone amplifier?

 

At present, the tube head power amplification on the market uses a cathode output device as the final stage power amplifier. This type of circuit structure should be said to be very reasonable. Therefore, it is adopted by most manufacturers. However, this circuit has a high output impedance and can only be used with headphones of 200 and 300 ohms or more, and the higher the impedance, the smaller the distortion.

 

The final stage of the power amplifier of the transistor earphone adopts an OTL circuit, and the impedance requirement is not strict, and the lower the impedance, the larger the output current and the greater the power. Therefore, the transistor power amplifier has high, medium and low resistance to eat, but it is better to push the medium and low impedance headphones.