Inner-magazines’ long- time technical advisor Mr. Mauri Pännäri is having his 75th Anniversary on 3 April 2024, and Inner-magazines gratefully congratulates him on the big day. Pännäri has published more than twenty DIY articles in various magazines over the past 50 years of hobbying. His contributions to the INNER include:
Revenge 6BX7 amplifier. A novelty low- wattage triode split load PP topology a’la MacIntosh/Köykkä (September 20, 2017)
The Legendary Lohstroh-Otala Amplifier revisited, Description and background information on the legendary TIM-free amplifier design of its time (July 28, 2019)
The Swiss Uniton. A Swiss 50W transistor Hifi amplifier rarity restored and described thoroughly with help from the UNITON factory ( May 21, 2021)
Revenge EL/PL36 SE amplifier. A novelty SE amplifier making unexceptional use of a TV tube with high quality components overall. (October 5, 2023)
He has also acted as a contributing technical expert in the following articles:
Current please, no voltage. The famous book of ESA Meriläinen on current drive of loudspeakers explained/analyzed ( September 16, 2012)
The tactics of three holes. A legendary Finnish amplifier system made by Salora, based on the patented Köykkä’s Orthoperspecta system with three loudspeakers, the system is described and some background history of Salora OY is provided in addition. ( September 26, 2017)
Pegaso. An Italian top level tube/ semiconductor hybrid amplifier thoroughly described and analyzed. (August 25, 2023).
Inner is looking forward to publishing other great contributions by Mr Pännäri on exciting subjects that we know he has spare!
