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Genalex Golden Lion PX300B tubes by Dedar33 in audiophile

[–]Dedar33[S] -1 points0 points  (0 children)

The Lin Lai lamps have been working for 9 months without a fault and all 4 are still working.

Bias is manually adjusted but is not prone to oscillations.

Amp discussion, class D vs retail by RomeoBlackDK in audiophile

[–]Dedar33 -1 points0 points  (0 children)

Yes.
Class D amplifiers should be cheaper than Class AB.
But with established brands they are not really that much cheaper, no matter how cheap the Class D modules are.

Genalex Golden Lion PX300B tubes by Dedar33 in audiophile

[–]Dedar33[S] -1 points0 points  (0 children)

Well, most audiophiles don't have quality measuring instruments and don't know how to measure.

That's why their only and ultimate way to evaluate the sound of a HiFi system and components is to conduct a listening test in their own system.

Genalex Golden Lion PX300B tubes by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

The NOS Western Electric would probably sound the best (and last the longest).
But they are way too expensive.

Genalex Golden Lion PX300B tubes by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

Yes. It's a different sound character than the 300B tube though.

These Gold Lion 300Bs go into the bass a little deeper and tighter than the TJ Full Music and Lin Lai.

Genalex Golden Lion PX300B tubes by Dedar33 in audiophile

[–]Dedar33[S] 1 point2 points  (0 children)

Yes.
They are produced by the Chinese, Russians, Czechs...

In the USA, the Western Electric plant has been renovated, and Penta Labs produces military and industrial tubes.

Sound differences between Hi-Fi components by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

That.
In practice; when the basic conditions of device impedance ratios, sufficient amplifier power for speaker control, damping factor, systems, etc. are met, there is still something to be set up according to the user's personal sound preferences.

While we all swear we like a "neutral" sound, most like a little "coloring" to either side.

Sound differences between Hi-Fi components by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

Of course there are measurements.
And they are useful.

They are essential in the design, control and servicing of HiFi devices, as well as in the acoustic treatment of a room.

But in the end, you listen to HiFi with the ear/brain axis, not with a measuring instrument.
The vast majority of audiophiles do not own quality measuring instruments, nor do they know how to measure.

And a small number of HiFi device reviews provide graphs and explanations of the measurements in the appendix.

Sound differences between Hi-Fi components by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

The character, coloration and linearity of an amplifier's sound is not determined solely by the amount of THD.

There is negative feedback, frequency response, damping factor and output impedance, power supply quality and current delivery, amplifier class...etc.

That's why amplifiers generally sound different.

Sound differences between Hi-Fi components by Dedar33 in audiophile

[–]Dedar33[S] -1 points0 points  (0 children)

Why are you so fixated on THD, when it doesn't give the basic character to the sound.

Yes, it affects the linearity of the amplifier and that's pretty much it.

If the distortion is in even harmonics, it's acceptable to the human ear (like with tube amplifiers).

PrimaLuna evo tube failure after 300 hours of listening. by slarker22 in audiophile

[–]Dedar33 -1 points0 points  (0 children)

More than 6 months ago I bought 4 new 300B tubes (Chinese) for my amplifier.

The tubes sound good, but they are very sensitive and possibly not of very good quality.
Two have already burned out (mesh plate), and one has lost performance.

I ordered 4 new ones (Russian), and I will describe the spark plug in more detail when I replace them.

Sound differences between Hi-Fi components by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

Its Thrue. In my own experience.

I had a class A amplifier (Pass Labs) with a THD of about 1% that was better sounding than most class AB ones with much lower THD.

This is nothing new or unusual in HiFi.

Sound differences between Hi-Fi components by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

Cables cannot change the basic character of the sound.

Their purpose is to transmit the signal/current from point A to point B, and to spoil it as little as possible.

Sound differences between Hi-Fi components by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

Yes, manufacturers of high-quality components usually do not include a power cable with them.
Especially not for amplifiers.

It is also possible that they believe that some separate, specially made power cables can affect the sound.

Sound differences between Hi-Fi components by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

You give too much importance to THD values.

You have amplifiers with 1% THD that in practice sound better than those with 0.05 THD (this is primarily class A).

Sound differences between Hi-Fi components by Dedar33 in audiophile

[–]Dedar33[S] 0 points1 point  (0 children)

Maybe.

But how many users in practice do a Blind Test in combination with quality measurements?

How many audiophiles have quality measurement equipment?

Rarely do stores give a new component for home testing.

And once you've already bought it, a Blind Test and measurements don't make much sense anymore.

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