Audio Database

SU-VX500
Commentary

Class AA integrated amplifier.

Panasonic / Technics Class AA system has been adopted.
In this circuit, voltage amplification and current drive, which were conventionally performed by a single amplifier, are each performed by a dedicated amplifier, so that phase shift of current / voltage due to fluctuation of signal level and load impedance is suppressed, and stable transmission and amplification are maintained.

A high-purity OFC winding is used for the power transformer, and an X-Pro twin capacitor is installed in the electrolytic capacitor to suppress mechanical vibration and magnetic radiation.

Equipped with Power Amp Direct, signal degradation can be minimized by shortcutting the signal path such as tone control.

Model Rating
Type Integrated amplifier
Rated output 60W + 60W (6 Ω, 20 Hz to 20 kHz, 0.01%)
Total harmonic distortion factor 0.005% (20 Hz to 20 kHz, Power Amp Direct, Rated Output -3dB, 8 Ω)
Damping factor 60 (8 Ω)
Frequency characteristic Tuner, CD, Aux, Tape1/2 : 3 Hz to 100 kHz + 0 -3dB
20 Hz ~ 20 kHz + 0 -0.2 dB
Power Amp Direct : 2 Hz ~ 120 khz + 0 -3dB
20 Hz ~ 20 kHz + 0 -0.2 dB
Input Sensitivity / Impedance Tuner, CD, Aux, Tape1/2 : 150mV/22k Ω
Power Amplifier Direct : 1V/18k Ω
Phono MM : 2.5mV/47k Ω
Phono MC : 170 μ V/220 Ω
Signal-to-noise ratio Tuner, CD, Aux, Tape1/2 : 90 dB (EIAJ)
99dB(IHF'66)
Power Amp Direct : 97 db (EIAJ)
115dB(IHF'66)
Phono MM:83dB(EIAJ)
85dB(IHF'66)
Phono MC:70dB(EIAJ)
67dB(IHF'66)
Tone control Bass : + / - 10 dB (50 Hz)
Treble : ± 10 dB (20 kHz)
Pwer 100 VAC, 50Hz/60Hz
Power consumption 155W
External dimensions Width 430x Height 125x Depth 316 mm
Weight 7.9kg