Technics SU-5
¥ 34,800 (released in 1982)
Commentary
Slim compact body pre-main amplifier with 315 mm width and 43.7 mm height.
It uses a bridge type MFB and is equipped with a super base that enhances the low frequency range. Since only fo is emphasized, the medium and low frequencies are not enhanced unnaturally compared with the conventional loudness and tone control. Even small speakers can enjoy heavy bass playback.
SLPT is used for the output transistor to realize low distortion and wide and flat frequency characteristics.
It uses a unique direct connector, and no pin cord is required when connecting to a 315 mm wide tuner ST-5 or graphic equalizer SH-E5.
Uses a slide-type volume.
It is equipped with an electronic protection circuit to protect the amplifier and speaker from overcurrent.
Model Rating
| Type | Stereo pre-main amplifier |
| Effective power (EIAJ) | 33W + 33W (8 ohm, 1 khz) |
| Total harmonic distortion factor | 0.005% (at 1 khz, rated output -3dB) |
| Frequency characteristic | Phono : 20 Hz to 20 kHz RIAA ± 0.8 dB Tuner, Aux, Tape : 10 hz to 70 khz -3dB |
| Signal-to-noise ratio (IHF-A) | Phono:73dB Tuner, Aux, Tape : 95 dB |
| Residual noise | 0.8mV |
| Damping factor | 30 (8 Ω) |
| Load impedance | 8 Ω ~ 16 Ω |
| Input Sensitivity / Impedance | Phono : 2.5mV/47k Ω Tuner, Aux, Tape : 150mV/27k Ω |
| Phono maximum allowable input | 130 mv (1 khz, R. M.S.) |
| Tone control | Bass : ± 10 dB (50 Hz) Treble : ± 10 dB (20 kHz) |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 44W |
| External dimensions | Width 315x Height 50x Depth 290 mm |
| Weight | 3.6kg |