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2. Carousell (company) - Wikipedia

   en.wikipedia.org/wiki/Carousell_(company)

   Carousell was founded in Singapore on 14 May 2012, by co-founders Quek Siu Rui, Lucas Ngoo, and Marcus Tan. The first item sold on Carousell was an Amazon Kindle e-reader for S$75. [1] Carousell was subsequently registered as Carousell Pte. Ltd. on 2 January 2013. [2] Carousell received its first investment from Quest Ventures. [3]

3. Audio power amplifier - Wikipedia

   en.wikipedia.org/wiki/Audio_power_amplifier

   Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus One hi-fi integrated audio amplifier (1984) [1]. An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.

4. Naim Audio amplification - Wikipedia

   en.wikipedia.org/wiki/Naim_Audio_amplification

   Naim power amplifiers are given numbers according to their power output into nominal load of 4 ohms. The company's first amplifier, the NAP 160, is a two-channel power amplifier with an output of 60 watts per channel; the NAP 135, which is a one-channel amplifier based on the same design as the NAP 250 rated at 135 watts. A custom-built very ...

5. Amplifier - Wikipedia

   en.wikipedia.org/wiki/Amplifier

   An amplifier that is said to have a gain of 20 dB might have a voltage gain of 20 dB and an available power gain of much more than 20 dB (power ratio of 100)—yet actually deliver a much lower power gain if, for example, the input is from a 600 Ω microphone and the output connects to a 47 kΩ input socket for a power amplifier. In general ...

6. Philco - Wikipedia

   en.wikipedia.org/wiki/Philco

   The Philco all-transistor portable phonograph TPA-1 and TPA-2 models played only 45rpm records and used four 1.5v "D" batteries for its power supply. "TPA" stands for "Transistor Phonograph Amplifier". Its circuitry used three Philco germanium PNP alloy-fused junction audio frequency transistors. After the 1956 season ended, Philco discontinued ...

7. Trainwreck Circuits - Wikipedia

   en.wikipedia.org/wiki/Trainwreck_Circuits

   Both amplifiers are still in production by their respective manufacturers. Ken Fischer died from complications due to chronic illness in 2006. John Mark, who was Ken's longtime friend and co-builder, decided to continue building amps under the Trainwreck name. Production of Trainwreck Amps resumed in 2009 with permission from Fischer's family.

8. 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 .

9. Instrument amplifier - Wikipedia

   en.wikipedia.org/wiki/Instrument_amplifier

   An instrument amplifier is used with musical instruments such as an electric guitar, an electric bass, electric organ, electric piano, synthesizers and drum machine to convert the signal from the pickup (with guitars and other string instruments and some keyboards) or other sound source (e.g, a synthesizer's signal) into an electronic signal ...