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Volume 4

The case for subjective listening tests
The “Terrible Twins” – a push-pull amplifier with solid state pentodes
€19,90 

Volume 3

Book review Burkhard Vogel The Sound of Silence (2nd edition)
Book review Morgan Jones Valve Amplifiers (4th edition)
€19,90 

Volume 1

Letter to the Editor Dave Kimber
Letter to the Editor Peter van Willenswaard
€19,90