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2. List of Bose portable audio products - Wikipedia

   en.wikipedia.org/wiki/List_of_Bose_portable...

   [5] [6] It used Bluetooth to communicate with the source device. [7] Reviewers praised the unit's audio quality, but criticized the high price and lack of a microphone (to enable its use as a speakerphone). [8] [9] The SoundLink Mobile was replaced by the SoundLink Bluetooth Mobile Speaker II, sold from 2012 until 2014.

3. Keyboard amplifier - Wikipedia

   en.wikipedia.org/wiki/Keyboard_amplifier

   Some keyboard players use a combo guitar amplifier, with a power amplifier and a speaker in a single wooden cabinet. The potential challenge with using guitar amps with keyboards is that a guitar amp is only designed to go down to about 82 Hz, the lowest note on an electric guitar, while an electric piano or Hammond organ may go down as low as ...

4. Powered speakers - Wikipedia

   en.wikipedia.org/wiki/Powered_speakers

   An active full-range loudspeaker. Powered speakers, also known as self-powered speakers and active speakers, are loudspeakers that have built-in amplifiers.Powered speakers are used in a range of settings, including in sound reinforcement systems (used at live music concerts), both for the main speakers facing the audience and the monitor speakers facing the performers; by DJs performing at ...

5. 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 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.

6. Bi-amping and tri-amping - Wikipedia

   en.wikipedia.org/wiki/Bi-amping_and_tri-amping

   A speaker system has to be wired to accommodate either configuration, typically with two sets of binding posts, one set for the bass and one set for the mid-highs. A single amplifier can usually power a woofer and a tweeter only through a post-amplifier crossover filter, which protects each driver from signals outside its frequency range.

7. Blackstar Amplification - Wikipedia

   en.wikipedia.org/wiki/Blackstar_Amplification

   The models contain 20, 40, 50, 60, and 100 watt amplifiers. All models except the 50W and 100W are available in combo form. The 50W and 100W is head only, and the 20W comes in either head or combo. The HT Venue series also contains three different cabinet sizes: 1×12, 2×12, and 4×12. All speakers in the HT Venue are Celestion.