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In this role it is widely used for the preamplifier (input and mid-level) stages of audio amplifiers. It has relatively high Miller capacitance, making it unsuitable for radio-frequency use. Typically a 12AX7 triode is configured with a high-value plate resistor, 100 kohms in most guitar amps and 220 kΩ or more in high-fidelity equipment.
Any conventional stereo amplifier can be operated in bridge or parallel mode provided that the common loudspeaker terminals (normally black) are connected and common to the ground rail within the amplifier. This would turn the stereo amplifier into a mono amplifier. Some two channel amplifiers, or stereo amplifiers, have the built in facility ...
They use the wireless Bluetooth technology to "stream" audio to the boombox from a compatible Bluetooth device, such as a mobile phone or Bluetooth MP3 player. An example of this is the JAMBOX, [ 14 ] which is marketed as a "Smart Speaker" as it can also function as a speakerphone for voice calls in addition to being an audio playback device.
The Pro-Ject Juke Box line integrates a turntable, phono stage, amplifier, and Bluetooth receiver into a single unit, offering a comprehensive audio solution. Models like the Juke Box E and Juke Box E1 are praised for their user-friendly setup and robust performance, making them ideal for vinyl enthusiasts seeking simplicity without sacrificing ...
Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus 1 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.
The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10.