I often find myself being drawn to Class 'A' type amplifiers, but why? Is that logical, or some kind of bias? I was of the opinion that they offered a better soundstage and a more natural listening experience. After this exercise, I am not so sure... In this video I also talk about 'Soundstage', what it is, and can it really be achieved? I also explain how humans detect sound sources and the importance of 'timbre' (a HiFi system's ability to differentiate between sound types).

Equipment used in this video:
Loudspeakers: Pearl Acoustics SG
Amplifiers: PassLabs INT-25, Rega Aethos, Sugden SPA-4, Musical Fidelity M8s-500s
Preamplifier: Topping Pre90
CD Player: Lyngdorf CD-2
Cables: Loudspeaker cables: Pearl Acoustics Natural Balance, Interconnects: AudioQuest
Listening Room acoustic panels: GIK

Topics covered:
00:00 - Introduction
07:14 - 'Soundstage', what is it and how good can it be?
10:13 - How do humans detect a sound source & hence imagine a soundstage.
15:11 - 'Timbre', distinguishing subtle differences in sounds
21:44 - Rega Aethos (Class AB)
22:45 - PassLabs INT-25 (Class A)
24:46 - Sugden SPA-4 (Class A)
25:41 - Musical Fidelity M8s-500s (Class AB)

Content Links:
More About Class A and AB amplifiers: https://www.electronics-lab.com/artic...
More about Soundstage: https://soundgearlab.com/learn/sounds...
How we perceive pitch: https://www.cochlea.eu/en/sound/psych...
White paper on Huygens and pitch: https://fabilsen.home.xs4all.nl/RPnat...
Wonderful 3D immersive sound experience (headphones essential)    • Virtual Barber Shop (Audio...use head...  
Chasing The Dragon Records (Clare Teal recording) https://chasingthedragon.co.uk/

Our intro & outro music ‘Philia’ by Stefan Meylaers: https://open.spotify.com/track/0w9qjK...

If you would like to discover more about Pearl Acoustics, who we are, what we do and what we believe in, please visit our website at: https://pearlacoustics.com/ or email us with your questions: [email protected]

Pearl Acoustics loudspeakers: https://pearlacoustics.com/loudspeakers/
Pearl Acoustics 170, vacuum tube, Class A amplifier: https://pearlacoustics.com/170-single...

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