Why tube amplifiers don’t deserve to be called “hi-fi” audio equipment?

   Why tube amplifiers don’t deserve to be called “hi-fi” audio equipment?

What should I do if the final sound of the amplifier is unpleasant?

Use tubes for the preamp!

Once a power amplifier uses vacuum tubes, it basically falls out of the category of "highly faithful audio"!

Don't jump, grab the ground with your head, let alone lift the table to cover up your guilty conscience.

Listen to what foreign professional audio consultants slowly say,

Tube power amplifier: also called vacuum tube, amplifier.

Timbre: Its scientific name is harmonics, harmonic distortion, and overtones. It is mainly composed of mid- to high-frequency frequencies, which determine whether it sounds good or not.

The difference between the voices of Zhang San and Li Si is the difference in timbre/overtones/harmonics.

The human brain likes symmetrical things, and even-order harmonics are more pleasing to the ear and feel pleasant to the ears.

Tube amplifier:

Distortion: Compared with transistor distortion, it is about 10 times larger, usually at the 3%-10% level.

Advanced transistors can range from 0.001%-0.1%.

But the electronic tube has more even-order harmonic distortion, which is like flattery. No matter how much,

This leader doesn’t have too many ears.

Drive and control:

The driving force depends on the speed of power increase: (Think about the difference between a slap hitting the face at high speed and a slap hitting the face slowly)

The (power) boost time of a transistor amplifier can be shorter than 2us milliseconds, while the tube is usually 5-10us.

Control depends on the damping: Since the signal needs to pass through the output transformer, the damping of the tube can be said to be weak.

But it also transforms a lot of clipping and distortion, and smoothes the digitally transferred square wave into an analog sound with a more rounded and coherent waveform.

When the slap hits your face, and then the hand slowly leaves your face, does it contain a hint of tenderness?

Single-ended: A set of tubes amplifies the complete signal waveform.

But it doesn’t have the high-power figures that novice audiophiles are looking for.

Push-pull amplification: cut the model in half, and each of the two groups is responsible for one half.

Then splice again, similar to the handover distortion of a relay race.

Errors in analog components and time errors are difficult to avoid.

It will also cancel out the harmonics and lose the only advantage. But the power numbers are big.

Are designers stupid? Do this? !

There is no way, many enthusiasts are novices, their value orientation is high power, heavy machines, and dense circuits!

Full of sincerity! ! !

It would be weird not to be cheated!

Unless you learn to think reversely, there is no such environment. Just take a look here and you’ll find out.

Summary: A tube machine with higher power and more tubes.

On the contrary, it is not as good as a low-power transistor machine.

So why not use high-quality transistors around 80 watts?

It's always that reason, you know.

Either the head is empty or the pocket is empty.

In short, once it comes to electronic tubes, whether it is a preamp or a amp,

You can say, fun, nice to listen to, even durable, cost-effective,

Just don’t mention high fidelity again, shut up! ! !

Because of the proportion of harmonic distortion, accurate playback of records, and respect for musicians,

The driving force and control of the speakers are incomparable.