TRIO KA-2600
¥ 37,500 (around 1969)
Commentary
A pre-main amplifier developed by inheriting the technology of KA-6000 and KA-4000.
An all-silicon transistor configuration is adopted, resulting in a low distortion factor design.
Equipped with tone control, both Bass and Treble can be changed by ± 10 dB.
It also has a cancellation circuit to eliminate waviness when the tone control is set to the "0" position.
Equipped with a muting circuit.
A preamplifier and a power amplifier can be used separately.
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Model Rating
| Type | Pre-main amplifier | ||||
| Power Amplifier Unit | |||||
| Rated output |
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| Music power | 55W (4 ω, IHF) 70W (8 ω, IHF) |
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| Frequency characteristic | 15 Hz to 70,000 Hz ± 1 dB | ||||
| Output Bandwidth Characteristics (IHF) | 15 hz to 70,000 hz -3dB | ||||
| Total harmonic distortion factor (8 Ω load) | 0.5% 0.05%(-3dB) |
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| Intermodulation distortion factor (60 Hz : 70 kHz, 8 Ω load, at rated output) | 0.5% 0.09%(-3dB) |
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| Input Sensitivity / Impedance | Main In : 100mV/100k Ω | ||||
| Residual noise | 0.8 mv (8 Ω) | ||||
| Damping factor | 80 (8 Ω) | ||||
| Preamplifier Section | |||||
| Input Sensitivity / Impedance | Phono1, 2 : 2mV/50k Ω Tape : 200mV/50k Ω MIC : 2mV/100k Ω AUX, Tuner : 200mV/50k Ω |
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| Recorded output | Tape Rec(PIN):200mV Tape Rec(DIN):40mV Dubbing:200mV |
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| Frequency characteristic | 20 Hz to 30,000 Hz ± 1 dB | ||||
| Maximum Input Voltage | 180 mv (Phono P-P, 1 khz) | ||||
| Tone control | Bass : 100 Hz ± 10 dB Treble : 10 kHz ± 10 dB |
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| Loudness control | + 10 dB (100 Hz), + 5 dB (10 kHz) | ||||
| Filter | Low Filter : 80 Hz, 6dB/oct. Hihg Filter : 8 kHz, 6dB/oct. |
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| Equalizer | Within ± 0.5 dB of the RIAA standard curve | ||||
| Signal-to-noise ratio | Phono1, 2 : 65 dB MIC:65dB Tuner, AUX, Tape Play : 80 dB |
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| <General> | |||||
| Accessory circuit | Audio muting switch Pre-Main jumper circuit DIN standard recording and re-connector Tape monitor switch 2-speaker selector switch Dubbing terminal for Tape Rec Power transistor protection circuit Stereo horn jack Tone control circuit |
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| Semiconductor used | Transistor : 19 Diode : 11 units |
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| Power supply voltage | 100 VAC / 117 V, 50Hz/60Hz | ||||
| Power consumption | No signal : 15W Maximum output : 110W |
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| External dimensions | Width 408x Height 134x Depth 280 mm | ||||
| Weight | 7.5kg | ||||