tube amplifier


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tube amplifier

An audio amplifier that uses vacuum tubes instead of transistors. Most aficionados of high-quality audio believe that vacuum tubes provide a more musical and more pleasing sound than transistor-based amplifiers. These are subjective opinions that often depend on the hearing ability of the listener. Many people cannot hear much difference between medium-quality and high-quality sound systems. Nevertheless, the most expensive amplifiers are tube based, and high-end preamplifiers may also use only tubes (see preamp). See hybrid amplifier, audiophile, stereophile, high-resolution audio and vacuum tube.


LAMM ML3 Tube Amplifier
Considered one of the finest manufacturers of audio equipment on the market, LAMM has been making amplifiers for more than two decades. Using gold-plated speaker terminals, a pair of ML3 amps cost USD $139,000 in 2014. (Image courtesy of LAMM Industries, Inc., www.lammindustries.com)







For the Do-It-Yourselfer
This do-it-yourself Gowegroup tube amplifier kit sold for USD $249, a tad more down to earth than the model above. (Image courtesy of Amazon.com.)
References in periodicals archive ?
Modjeski essentially tells his life's story--from his early childhood experiences with tube amplifiers, to his to running a hi-fi repair shop in Richmond, Virginia, to opening a high-end store, to working for Harold Beveridge, and to finally founding Music Reference in 1981.
For example, traveling wave tube amplifiers (TWTAs) typically are operated in saturation so the amplifier's power rating is the saturation power.
First, most tube amplifier designs sound different from most solid state designs.
In recent years, significant advances have been made in solid-state technology that have resulted in solid-state power amplifiers (SSPA) becoming a truly viable alternative to the traveling-wave tube amplifier (TWTA) for microwave high power amplifier applications.
Sources describe DO-SAR ARMS as incorporating a traveling wave tube amplifier, a solid-state receiver, multilook processing, digital signal and frequency generation, a datalink subsystem and differential Global Positioning System motion compensation.
There are still folks who swear by tube amplifiers. These amplifiers really can sound different, largely because their frequency response tends to deviate from flat with different speaker loads, but by and large, the differences are probably not worth getting excited about -- speaker placement in the room will affect the sound much more than will switching from a transistor to a tube amplifier.
I believe this old tweak tale got its start from the heyday of the tube amplifier when aging tubes had to constantly be rebiased for their always changing electrical parameters.
For example, suppose tube amplifier J costs $550 and puts out 20 watts per channel into 4 ohms.
According to the company, the new products include: Audio Dock with Vacuum Tube Amplifier (model DA-E750) and Audio Dock for Galaxy S and Apple devices (DA-E670).