Technics SU-8055
¥ 51,800 (around 1979)
Commentary
A DC pre-main amplifier that eliminates the capacitor with a time constant between the high-level input and the speaker output.
In the first stage of the power amplifier section, a single-package dual transistor with uniform characteristics is adopted. This transistor is operated by a current mirror load capable of selecting an operating current with low distortion, and is fed to the voltage amplifier stage through an emitter follower.
Power Pack ICs composed of 2-stage Darlington connection pure complimentary service circuit are mounted on the output-stage.
It uses a newly developed recording and playback selector that makes the Rec selector and Input selector independent.
Equipped with an FL peak power meter that lights up in a bar graph style from 0.1W to 100W to display output.
Model Rating
| Type | Stereo pre-main amplifier |
| Effective output (both channel drive) | 45W + 45W (8 ohm, 20 hz to 20 khz) |
| Output bandwidth | 5 hz to 30 khz -3dB |
| Total harmonic distortion factor | 0.03% |
| Phono maximum allowable input | 150mV |
| Signal-to-noise ratio | Phono:82dB Tuner, Aux, Tape : 97 dB Mic:70dB |
| Tone control | Bass : ± 10 dB (50 Hz) Treble : ± 10 dB (20 kHz) |
| Subsonic filter | 30 Hz, -6dB/oct. |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 100W |
| External dimensions | Width 430x Height 142x Depth 255 mm |
| Weight | 7.2kg |