Srila Prabhupada: Srila Madhvacarya is the original acarya for those who belong to the Madhva-Gaudiya-sampradaya." (Srimad Bhagavatam, 6.1.40.purport) "This Madhva-Gaudiya-sampradaya is also known as the Brahma-sampradaya because the disciplic succession originally began from Brahma. Brahma instructed the sage Narada, Narada instructed Vyasadeva, and Vyasadeva instructed Madhva Muni, or Madhvacarya." (Krsna Book, Introduction).
Srila Narayana Maharaja: After Ramanuja came Madhvacarya. He established a certain portion of the Vedas, and his philosophy is called visuddhadvaita or dvaitadvaitavada. In this philosophical understanding there are five differences. You should explain the five differences.
Sriman Prema Prayojana Dasa: Madhvacarya established the philosophy that there is a difference between brahma and maya, there is a difference between jiva and maya, there is difference between jiva and jiva, and between different manifestations of maya there are also differences. These five types of differences are called dvaitavada.
Srila Narayana Maharaja: His practice was bhakti and his aim and object was the service of the Supreme Lord in the form of Vasudeva. Which Vasudeva? He who has a churning rod in His hand. This form was also accepted by Sri Caitanya Mahaprabhu.