Pioneer SM 83 vs Pioneer ER 420 vs Fisher x100A.

This is a comparison of vintage tube amplifiers of the same class.
The same two microphones were used for each video - Oktava MK 012 01. The sound source was a Technics RS-B100 cassette deck.
The loudness of the amplifiers is measured and it is the same. All other parameters such as sensitivity of the microphones, recording settings etc. are also the same

The Pioneer SM83 amplifier plays in this recording.

Link to Pioneer ER 420:
https://youtu.be/rsX8ih5Qqmc

Link to Fisher x100a:
https://youtu.be/eypVYgvZVQY

Enjoy!

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