Uploaded March 2026 | Updated September 2026, 3 weeks ago

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This is a technical review of Zapco Z-150.6AP amplifier. Yes, it is class B. Why? Watch the video to find out. In this video I will explain the differences between A, B and AB classes, I will demonstrate what bias adjustment does and we will have a look how this audiophile grade amplifier actually performs. As well we will compare it to some other amplifiers. This is a long one so strap in.

Barevids video about the build quality of this amplifier:
youtube.com/watch?v=odr8esNT0jg

Two videos made by Russian content creators:
youtube.com/watch?v=ljLQst7dJTc&list=WL&index=10
youtube.com/watch?v=zTEx5CJjagE&list=WL&index=7

Zapco REFERENCE 250.2 review by Ahmed:
youtube.com/watch?v=xNhWT3IkAUc

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