The word “Tattvavādī” refers to the followers of Śrīla Madhvācārya. To distinguish his disciplic succession from the Māyāvādī followers of Śaṅkarācārya, Śrīla Madhvācārya named his party the Tattvavādīs. Impersonal monists are always attacked by these Tattvavādīs, who attempt to defeat their philosophy of impersonalism. Generally, they establish the supremacy of the Supreme Personality of Godhead. Actually the disciplic succession of Madhvācārya is known as the Brahmā Vaiṣṇava sect; that is the sect coming down from Lord Brahmā. Consequently the Tattvavādīs, or followers of Madhvācārya, do not accept the incident of Lord Brahmā’s illusion, which is recorded in the Tenth Canto of Śrīmad-Bhāgavatam. Śrīla Madhvācārya has purposefully avoided commenting on that portion of Śrīmad-Bhāgavatam in which brahma-mohana, the illusion of Lord Brahmā, is mentioned. Śrīla Mādhavendra Purī was one of the ācāryas in the Tattvavāda disciplic succession, and he established the ultimate goal of transcendentalism to be attainment of pure devotional service, love of Godhead. Those Vaiṣṇavas belonging to the Gauḍīya-sampradāya, the disciplic succession following Śrī Caitanya Mahāprabhu, are distinct from the Tattvavādīs, although they belong to the same Tattvavāda-sampradāya. The followers of Śrī Caitanya Mahāprabhu are therefore known as the Madhva-Gauḍīya-sampradāya.
Ref>>Srila Prabhupada Vani.