TRIO W-45A
¥ 35,300 (around the early 1960 s)
Commentary
Deluxe type pre-main amplifier.
The output is 36W for monaural and 18Wx2 for stereo.
Uses a full DC ignition system to eliminate hum.
Equipped with a rumble filter.
It has a headphone port.
Equipped with a new type balance meter, you can accurately balance the left and right channel amplifier outputs while watching.
You can adjust the phase of the speakers with the switch on the back. You can also adjust the phase of the speakers after they are connected.
Equipped with a loudness control.
There was a tuner AF 270 which was sold separately and matched in performance and design.
Model Rating
| Type | Stereo pre-main amplifier |
| Output | Stereo : 18W + 18W (harmonic distortion 1% or less) mono:36W |
| Input sensitivity (input required for output 15W) | MAG:3mV Tape HD:4mV Tuner:45mV Aux:145mV |
| Tone control | Bass : + 13 dB ~ -12.5 dB (50 Hz) Treble : + 13 dB ~ -16dB (10 kHz) |
| Loudness control (Vol -30dB) | 50 Hz : + 16 dB, 10 kHz : + 2.5 dB |
| Equalizer | RIAA (LP records) NARTB (tape recorder) |
| Residual noise (maximum volume, tone control flat) | MAG:20mV Aux:2.0mV Tape HD:20mV |
| Accessory circuit | Balance meter Rumble filter Loudness control Stereo headphone jack |
| Used vacuum tubes, etc. | 12AX7x4 12AU7x2 6BQ5x4 5AR4 OA-79x2 |
| External dimensions | Width 390x Height 135x Depth 290 mm |
| Weight | 9.7 kg, 21 lbs |