Tag: Amplifiers

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Surround Sound - Part III
If you buy separate processor, then you will need power amplifiers to go with it. . .



Single Ended Amp
The function of all the grids is to modify the current flowing between. . .


Push Pull Amp
To get more power out of a tube amplifier, tetrode and pentode . . .


Transistor Amplifiers
Solid state (transistor - semiconductor) amplifiers are manufactured in the millions . . .


Power Supply
Some of the newer design preamplifiers, power amplifiers, and...


Slew Rate
The "slew rate" is an interesting factor that is sometimes...


Harmonics
In the world of acoustics, there are discussions of "harmonics"...


High Voltage & High Current
You will find Pure Class A and exceptional quality Class AB equipment. . .


Class of Operation
High Fidelity Amplifiers operate in what is known as Class A...


Current
In order to understand what the various parts in an amplifier do...


Negative Feedback
Natural sounds (not recorded) contain many harmonics...


Speaker Sensitivity
Sensitivity is measured in terms of dB/watt/meter or dB/2.83 volts/meter...


Subwoofers
If you are not using full range speakers...


Parasound 2100 Stereo Preamplifier and 2250 Stereo Power Amplifier
parasound-2100-2250-teaser.jpgAs I said at the beginning of this review, now is a good time to be an audiophile. The Parasound 2100 preamplifier and 2250 power amplifier offer sound quality across the board so good I would have thought you’d have to pay at least $3,000 to get them. But, at a mere $1800, the Parasounds are a steal.


McIntosh MA6300 Integrated Stereo Amplifier

McIntosh MA6300Although I have always been interested in McIntosh products, I was really intrigued by the McIntosh MA6300 because I could finally afford one.  Modest power output and all solid state construction will let you into the world of McIntosh ownership for just $3,000.




Denon AVP-A1HDCI Surround Sound Processor and POA-A1HDCI Power Amplifier
Denon AVP-A1HDCI SSP and POA-A1HDCI AmplifierDenon's new AVP-A1HDCI sports 12 configurable XLR fully balanced output channels. It handles all the newest codecs, including DTS-HD Master Audio and Dolby TrueHD. Using its Denon Link, along with a DVD player that also has the Denon Link, you can play SACDs with the native DSD bitstream being sent to the processor for decoding (no conversion to PCM like most other systems do). Weighing in at nearly 60 pounds, the A1HDCI has massive built quality, and has wireless network capabilities that will allow it to be receive firmware updates. The A1HDCI's performance and features make it the finest SSP Secrets has ever tested. The accompanying POA-A1HDCI is a 10-channel power amplifier that is designed specifically to go with the SSP. At 132 pounds, it is a monster. Together, these represent state-of-the-art surround sound technology.


Jaton Operetta 2300a Class A/B Amplifier - First Look

jaton-operetta-2300a-amplifier-fig-1-leadin.jpgThe Jaton company has been around for over 25 years. They started with manufacturing PC video cards, and have since branched into home theater and hi-fi gear. Lyra's HD-661 DX speakers were recently reviewed at Secrets, and their interesting design and great sound made me want to try out their amplification. George from Jaton was kind enough to send me a rather large and heavy Class A/B Stereo amplifier capable of putting out 300 watts RMS per channel into 4 ohms. Initial problems with the amplifier has required Jaton to redesign it, and the revised version will be sent to me for review In the meantime, here are some initial observations on the unrevised unit.






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