Audio Database

The

Technics SU-V60 64,800yen(around the 1986 time)

Description
@
The Integrated Amplifier which carries the classAA technology of SE-A100/SU-A200.

In classAA, it has VC-4 amplifier composition which arranged two kinds of amplifier, the voltage control amplifier of the pure Class-A operation without the influence of switching distortion and crossover distortion, and the electric-current drive amplifier for driving a speaker dynamically, on L/R of each.
Thereby, voltage control amplifier was released from a heavy burden called a current supply source, and could control the voltage to an input signal faithfully, and electric-current drive amplifier supplied the electric current required for a speaker drive, and has eliminated it from ill effects, such as an impedance variation of a speaker.

A large-sized transformer and a mass capacitor equipped with 300A thing instantaneous current supply capacity and the outstanding linearity are adopted as a power-source fraction. Moreover, the distortion of a high region by electromagnetic radiation is canceled by the original concentrated power block by unifying an output stage and a power-source part with a skillful stream composition.

The Lec mode selector which can choose the sound-recording source independently is carried.

It is possible to carry compact-disk direct functionality and to connect with a volume direct without an input selector.

The phone equalizer part serves as a high gain type of MC basic design, and has first rank amplifier of super-low-noise FET adoption, and interrupt-control-logic composition which combined high resisting pressure and quantity slew-rate operational amplifier.

The large-sized metals foot is adopted and the ill effect by an extraneous vibration is stopped.

ClassAA Electrolytic
classAA conceptual diagram Electrolytic capacitor

Rating of a mode
Form Integrated amplifier
Effective output (20Hz - 20kHz) 100W+100W (6 ohms, 0.004%)
THD 0.002% (Output-power-3dB, 20Hz - 20kHz)
Frequency characteristic 20Hz-20kHz+0 -0.2 dB
5Hz-120kHz+0 -3 dB
SN ratio 100dB(IHF'66)
Dumping factor 60 (8ohms)
Load impedance main or remote: 6ohms - 16ohms
main and remote: 12ohms - 16ohms
Input sensitivity/impedance Phono man month: 2.5mV / 47kohm
Phono MC: 170 microvolts/220 ohms
Tuner, Aux, Tape:150mV /, 22kohm
Phono SN ratio man month: 86dB (2.5mV input)
MC: 68dB (250-microvolt input)
Phono frequency characteristic 30Hz - 15kHz, RIAA}0.8dB
Tone control Bass: }10dB (50Hz)
Treble: }10dB (20kHz)
Loudness control (VR-30dB) +9dB(50Hz)
Power source AC100V, 50Hz/60Hz
Power consumption 200W
Dimensions Width 430x height 116x depth of 340mm
Weight 8.5kg