Maintained in 2021. The BA303 was released as Sansui's last vacuum tube power amplifier. Since it is made up of all triodes, it has the characteristic that the characteristics of the high frequency range hardly deteriorate compared to the middle range, and the characteristics of the speaker are fully demonstrated. Exterior, dullness, abrasions, and light rust can be seen (Kobayashi Hitoshi)
Maintenance information: 2021.2.6 Maintained (coupling capacitors, electrolytic capacitors, vacuum tube sockets, power switches, RCA/SP terminals, fuse replacement. Repolish the bias VOL decomposition contacts and apply grease to prevent oxidation and sulfation. Bias adjustment, input/output waveform confirmation, load test (1kHz sine wave, 8Ω load: 27W+27W, OK), sound output test)
Accessories: none
Main specifications: KT88×4, 6AQ8×2, 12AU7×2 W432×H332×D181mm 26.5kg