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2. Technics (brand) - Wikipedia

   en.wikipedia.org/wiki/Technics_(brand)

   SE-A1 Amp: Top of the line Technics amp at a cost of US$6,000. SU-A2 Pre-Amp: Top of the line for Technics at a cost of US$8,000. SB-E100 and SB-E200 Loudspeakers: These were both designed with the SB-10000 in mind. The SB-E100 looked like the 10000 with the bass enclosure turned on its end with the mid/tweeter section mounted on top.

3. Need new earbuds? These are the best, on sale right now - AOL

   www.aol.com/news/earbuds-best-sale-now-195634874...

   Apple AirPods Pro (2nd Generation) $ at Amazon. Apple AirPods Pro (2nd Generation) $ at Walmart. Apple AirPods Pro (2nd Generation) $ at Best Buy. Jabra Elite 3. Another one of our favorites, the ...

4. The best affordable wireless earbuds still on sale for ... - AOL

   www.aol.com/lifestyle/best-cheap-earbuds-buy...

   Buds on a budget: We scoped out Best Buy, Amazon and Walmart to find 12 wireless wonders that are absolute steals right now. Snatch them up before all the post-Memorial Day sales end.

5. RF power amplifier - Wikipedia

   en.wikipedia.org/wiki/RF_power_amplifier

   A radio-frequency power amplifier (RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency (RF) signal into a higher-power signal. [1] Typically, RF power amplifiers are used in the final stage of a radio transmitter, their output driving the antenna. Design goals often include gain, power output ...

6. Power amplifier classes - Wikipedia

   en.wikipedia.org/wiki/Power_amplifier_classes

   Power amplifier classes. In electronics, power amplifier classes are letter symbols applied to different power amplifier types. The class gives a broad indication of an amplifier 's characteristics and performance. The first three classes are related to the time period that the active amplifier device is passing current, expressed as a fraction ...

7. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby ...