TRIO KA-5002
¥ 65,000 (around 1971)
Commentary
Pre-main amplifier with common basic circuit with KA-7002.
Pure complimentary service circuit directly connected to all stages is adopted for the circuit structure.
Equipped with a head amplifier for low output cartridge.
Equipped with input / output jacks and control volume for 4D stereo.
Load impedance selection switch for MM is mounted.
Model Rating
| Type | Pre-main amplifier |
| Power Amplifier Unit | |
| Music Power (IHF) | 150W (4 Ω) 120W (8 Ω) |
| Effective power | 60W/60W (single-channel operation, 4 Ω) 50W/50W (single-channel operation, 8 Ω) 48W + 48W (both channel operation, 4 Ω) 35W + 35W (both channel operation, 8 Ω) |
| Total harmonic distortion factor | 0.5% (8 Ω at rated output) 0.05% (8 Ω at rated output of -3dB) |
| Cross modulation distortion factor | 0.3% (8 Ω at Rated Output) 0.08% (8 Ω at rated output of -3dB) |
| Output bandwidth | 2 Hz to 60 kHz (IHF) |
| Input sensitivity | Main in : 1V/50k Ω |
| Residual noise | 0.5 mv (8 Ω) |
| Damping factor | 45 (8 Ω) |
| Preamplifier Section | |
| Input Sensitivity / Impedance (for rated input) |
Phono1 : 2.5mV/30k Ω, 50k Ω switching Phono2 : 0.06mV/200 Ω 2.5mV/50k Ω Mic : 2.5mV/50k Ω Aux1/2, Tuner : 200mV/100k Ω |
| Recorded output | Tape rec A/B(Pin):200mV Tape rec A/B(DIN):40mV Dubbing A-B:200mV |
| Frequency characteristic | 20 Hz to 50 kHz ± 1 dB |
| Maximum Input Voltage | 310 mv (Phono1, P-P, 1 khz) |
| Tone control | Bass : ± 10 dB (100 Hz) Treble : ± 10 dB (10 kHz) |
| Loudness contour | + 8 dB (100 Hz), + 3 dB (10 kHz) |
| Filter | Low : 80 Hz, 12dB/oct. High : 7 kHz, 12dB/oct. |
| Equalizer | ± 0.1 dB to the RIAA standard curve |
| Signal-to-noise ratio | Phono1:70dB(2.5mV) Phono2:50dB(0.06mV) 70dB(2.5mV) Mic:70dB(2.5mV) Aux, Tuner, Tape : 80 dB |
| <General> | |
| Accessory circuit | 2-speaker switching Tape monitor (2 systems) and dubbing Head amplifier for low output cartridge Null Balance Audio Muting Premain and separate Output terminal for mono Power transistor protection circuit Stereo horn jack DIN standard recording and re-connector (2 systems) |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Rated power consumption (Electrical Appliance and Material Control Law) | 15W (No signal) 200W at maximum output |
| External dimensions | Width 408x Height 134x Depth 280 mm |
| Weight | 9kg |
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