Audio Database

The

SANSUI BA-303
109,000yen(around the 1970 time)

Description
 
Tube power amplifier which the SANSUI put on the market.
The power amplifier of the period tube long after BA-202 and BA-303 was not put on the market.

Circuitry serves as the Williamson type.
Since the circuitry of this synopsis has no less than three steps of time constants in low-pass, it does not turn to high feedback amplifier, but since it is realized with the all triode, it has the special feature that the property of a high region hardly deteriorates compared with a mid range.

Output-tube KT-88 is used for BA-303.

Bias checking meter is carried.


Rating of a mode
Form Stereo power amplifier
Effective output 27W+27W (8ohms)
Music power 60W (8ohms)
Frequency band 15Hz - 50000Hz
THD 0.3% (at the time of an Output power 8ohms)
Input sensitivity/impedance 0.9V/100kohm
SN ratio 80dB (at the time of an Output power)
Dumping factor 1, 2, 4, 8, 15, 30 (8ohms)
* Change-over-switch loading
Valves employed etc. Thermionic-tube x8 (6AQ8x2, 12AU7x2, KT-88x4)
Diode x6
Dimensions Width 432x height 332x depth of 181mm
Weight 26.5kg