Audio Database


Panasonic SU-VX500 39,800yen(1991 release)

Integrated amplifier which adopted the class AA scheme.

The class AA scheme original with Panasonic/technics is adopted.
In this circuitry, the phase shift of signal level, or the electric current/voltage by variation of a load impedance is stopped because amplifier for exclusive use performs the voltage amplification and electric-current drive which were conventionally performed with one amplifier, respectively, and the stable transmit and amplification are maintained.

The high purity OFC coil is used for a power transformer. Moreover, the X-Pro twin capacitor is carried in the electrolytic capacitor, and the equipment oscillation and the magnetic radiation are suppressed.

The power amplifier direct is carried and a signal failure can be suppressed as much as possible by carrying out the shortcut of the signal paths, such as a tone control.

Rating of a mode
Form Integrated amplifier
Output power 60W+60W (6 ohms, 20Hz - 20kHz, 0.01%)
THD 0.005% (20Hz - 20kHz, a power amplifier direct, Output-power-3dB, 8ohms)
Dumping factor 60 (8ohms)
Frequency characteristic Tuner, compact disk, Aux, and Tape1/2:3Hz-100kHz+0 -3 dB
20Hz-20kHz+0 -0.2 dB
Power amplifier direct: 2Hz-120kHz+0 -3 dB
20Hz-20kHz+0 -0.2 dB
Input sensitivity/impedance Tuner, compact disk, Aux, 1/2:150mV of Tape(s) / 22kohm
Power amplifier direct: 1V/18kohm
Phono man month: 2.5mV / 47kohm
Phono MC: 170 microvolts/220 ohms
S/N ratio Tuner, compact disk, Aux, Tape of 1/2:90dB (EIAJ)
Power amplifier direct: 97dB (EIAJ)
Phono MM:83dB(EIAJ)
Phono MC:70dB(EIAJ)
Tone control bass:±10dB (50Hz)
treble: ±10dB (20kHz)
Power source AC100V, 50Hz/60Hz
Power consumption 155W
Dimensions Width 430x height 125x depth of 316mm
Weight 7.9kg