Why are 300B tubes so expensive?

To get better sound you have to select better tubes. Why Western Electric 300B tubes are so expensive, because they were made to sound best in simple amplifiers where everything relied on tubes. Such amplifiers can nor drive properly any speakers. They need speakers that have particular mechanical damping.

How long do 300B tubes last?

The Western Electric 300B (the original &amp, first 300B) lasts for over 40,000 hours. That’s listening to your hi-fi for 24/7 for ~ 5 years straight. The tube was designed for extremely low maintenance &amp, a very long life in licensed Western Electric theater amps (vintage mid 1930’s).

What are 300B tubes used for?

In the 1980s it started to be used increasingly by audiophiles in home audio equipment. The 300B has good linearity, low noise and good reliability, it is often used in single-ended triode (SET) audio amplifiers of about eight watts output, a push-pull pair can output 20 watts.

DO 300B tubes glow?

None. Every 300b based amp I’ve seen in the past had that blue glow, so I thought there might be something wrong. But, the amp worked beautifully. I have a Line Magnetic 300b based integrated and the tubes have never had a blue glow.

How often should tubes be replaced?

On average, tubes can last from 500 to 1,000 hours, so if you play with your amp two to three hours every day, you can safely expect to get around a year or less from your vacuum tubes.

Where are Psvane vacuum tubes made?

In Oct 2011, Psvane Audio made another major movement by buying out all the equipment and production team of Guiguang Tube Factory in southern China.

What is a single ended triode amp?

A single-ended triode (SET) is a vacuum tube electronic amplifier that uses a single triode to produce an output, in contrast to a push-pull amplifier which uses a pair of devices with antiphase inputs to generate an output with the wanted signals added and the distortion components subtracted.

Where are Cary Audio products made?

Wright states that Cary Audio is proud to be an American manufacturer of high-performance hand-crafted products that employs 21 dedicated employees in a 10,000-square feet factory in Raleigh, North Carolina.

What color should amp tubes glow?

This type of glow is usually violet in color and most noticeable around the inside surface of the glass bulb. It is most pronounced on power tubes and is the product of electron bombardment of the glass taking place within the tube.

What color should amp tubes be?

Check the Filaments Glow!

Within your tubes, sits a heater filament and when working optimally, will illuminate with a satisfying warm orange glow. These filaments when glowing, emit electrons at high temperature producing heat for the tube which is needed to maintain the amplifiers optimal tone.

Are amp tubes supposed to glow red?

The tube is fine! It actually indicates that the vacuum inside the tube is very good, which is what allows this phenomenon to occur. It will not have any effect on the performance or tone of the amp. HOWEVER: If you notice a red glow on the metal plates of the tubes, turn off the amp immediately.