Technics SU-V40
¥ 46,800 (around 1986)
Commentary
Pre-main amplifier with classAA technology.
ClassAA has a VC-4 amplifier configuration with two types of amplifiers for each L and R. One is a pure class A voltage-controlled amplifier that is free from switching distortion and crossover distortion, and the other is a current-driven amplifier that drives speakers dynamically.
As a result, the voltage-controlled amplifier is freed from the burden of current supply, and the voltage can be controlled faithfully to the input signal. The current-driven amplifier supplies the current required to drive the speaker and eliminates adverse effects such as impedance fluctuations of the speaker.
The power supply section uses a large transformer and a large capacitor with an instantaneous current supply capacity of 300A and excellent linearity. In addition, the output stage and power supply section are integrated with an ingenious configuration by a unique concentrated power block, eliminating the negative effects of electromagnetic fields from the root and eliminating high-frequency distortion caused by electromagnetic radiation.
Equipped with a Route 6 input jack, you can check the selected source with an indicator.
Equipped with the CD direct function, it is possible to connect directly to a volume without using the input selector.
Uses a large metal insulator to reduce adverse effects caused by external vibration.
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Model Rating
| Type | Integrated amplifier |
| Effective output (20 Hz to 20 kHz) | 60W + 60W (6 Ω, 0.005%) |
| Total harmonic distortion factor | 0.003% (Rated Output -3dB, 20 hz to 20 khz) |
| Frequency characteristic | 20 Hz ~ 20 kHz + 0 -0.2 dB 5 Hz ~ 120 kHz + 0 -3dB |
| Signal-to-noise ratio | 100dB(IHF'66) |
| Damping factor | 60 (8 Ω) |
| Load impedance | Main or remote : 6 Ω ~ 16 Ω Main and remote : 12 Ω ~ 16 Ω |
| 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 | 30 Hz to 15 kHz, RIAA ± 0.8 dB |
| Tone control | Bass : ± 10 dB (50 Hz) Treble : ± 10 dB (20 kHz) |
| Loudness control (VR-30dB) | +9dB(50Hz) |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 125W |
| External dimensions | Width 430x Height 97x Depth 290 mm |
| Weight | 6.3kg |