According to the different components used, the power amplifiers include "Bold" [electronic tube amplifier], "Stone" [transistor amplifier] and "IC amplifier" [integrated circuit amplifier]. In recent years, due to the application of new technology and new concepts in the gallbladder machine, the electronic tube, an ancient vacuum device, shines brilliantly, and its beautiful sound makes many fans fall in love. Almost all experienced enthusiasts have one. "IC power amplifier" is rarely seen in HI-FI power amplifier, because its timbre is not as good as two power amplifiers.
Power amplifiers can generally be divided into three categories: professional power amplifiers, civil power amplifiers and special power amplifiers.
"Professional amplifier" is generally used to amplify the sound of conferences, performances, halls, auditoriums, venues and museums. The design is based on high output power, perfect protection circuit and good heat dissipation. When the timbre of most "professional power amplifiers" is used for HI-FI playback, the sound is very unpleasant.
The detailed classification of "civil power amplifier" includes "HI-FI power amplifier", "AV power amplifier" and "KALAOK power amplifier" which integrates various common functions.
I recommend a stereo to you. Philip, the rambler is good. Philips is more expensive and there are more fakes. Consumers are more passive when choosing, and it is difficult to distinguish. Rambler is cheaper, but it still has shortcomings, that is, it mainly makes low-cost audio, so the sound quality is still lacking and cannot be too demanding. Similar to these two, AB HIFI of bt-audio is better. Adopt super instantaneous response unit, the high tone is durable, the low tone is not sticky, the strong tone is not dry, and the weak tone is not empty. The warm and mellow timbre shows the infinite charm of music, and you can feel the charming melody of British legend, appreciate the pedigree, sound quality and workmanship.
The style contained in AB bookcase comes from the unique design of BT-audio audio engineer, a desktop HIFI speaker with bedroom and study, with exquisite and elegant appearance. First-class workmanship and sound quality have created the myth of high-end and low price in the audio industry, and completely brought the concept of parity to the extreme!
I hope my answer can help you.