DOWNLOAD (Sanskrit-English, OCR-layer in English, 13MB):
English annotation by Vishnudut1926: The stellar edition by Dvaita Vedanta Studies and K.T. Pandurangi. Their editions are widely renowned due to their top-notch quality, so no my annotation is actually needed.
Quite a doleful fact - I have only Volume 01 of Principal Upanishads up to now, Volume 02 will appear in my E-Library as soon as I will manage to obtain the quality scan.
If you are searching for the other editions by K.T. Pandurangi, you can also download the following pdf-scans from my E-Library:
1. VISHNUTATVAVINIRNAYAH [VISHNU-TATVA-NIRNAYA] by ~OM VishnuPad Shree MadhvAcharya~ #translated by professor K.T. Pandurangi# [Dvaita Vedanta] 1991 - http://vishnudut1926.blogspot.ru/2017/12/vishnutatvavinirnayah-vishnu-tatva.html
2. "Philosophic Vision of Sri MahaBharata TatParyaNirnaya and BhagavataTatparyaNirnaya of Sri AnandaTeertha BhagavatPadAcharya Sarvamoola Grantha" #by prof. K.T. Pandurangi# ~2015~ - http://vishnudut1926.blogspot.ru/2018/01/philosophic-vision-of-sri-mahabharata.html
3. "Essentials of Upanishads according to Sri Madhvacharya's Bhasya" by Prof. K.T. Pandurangi, 2010 - http://vishnudut1926.blogspot.com/2019/04/essentials-of-upanishads-according-to.html
4. "Ishavasya Talavakara Kathaka Upanishads according to Sri Madhvacharya's Bhashya and Sri RaghavendraTirtha Khandartha" #ENG by K.T. Pandurangi# ~1985~ - http://vishnudut1926.blogspot.ru/2018/01/ishavasya-talavakara-kathaka-upanishads.html
5. "SHATPRASNA ATHARVANA MANDUKYA UPANISHADS" with English translation and notes ACCORDING TO SRI MADHVACHARYA'S BHASHYA translated by prof. K.T. Pandurangi [Sriman Madhva Siddhantonnahini Sabha] - 1986 - http://vishnudut1926.blogspot.com/2018/08/shatprasna-atharvana-mandukya.html
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