Audio Database

SU-Z55
Commentary

Pre-main amplifier with an information concentrated display on the front.

Two decks can be connected.

Model Rating
Type Stereo pre-main amplifier
<Overall characteristics of tuner, aux → Spout>
Effective power 60W + 60W (8 ω, 1 kHz, EIAJ)
Total harmonic distortion factor 0.003% (at 1 khz, rated output -3dB)
Load impedance Main or remote : 8 Ω ~ 16 Ω
Frequency characteristic 5 Hz ~ 80 kHz + 0 -3dB
Signal-to-noise ratio (IHF-A) 100dB
Residual noise 0.8mV
Damping factor 40 (8 Ω)
<Other characteristics>
Input Sensitivity / Impedance Phono MM : 2.5mv/47k Ω
Tuner, Aux, Tape : 150mV/22k Ω
Phono SN ratio MM : 81 dB (2.5 mV input)
Phono frequency characteristics 20 Hz to 20 kHz RIAA ± 0.8 dB
Tone control Bass : ± 10 dB (50 Hz)
Treble : ± 10 dB (20 kHz)
Loudness control + 9 dB (50 Hz, VR-30dB)
<General>
Pwer 100 VAC, 50Hz/60Hz
Power consumption 80W
External dimensions Width 430x Height 86x Depth 241 mm
Weight 5.1kg