TRIO KA-3042

Commentary

A 4-channel demodulator premain amplifier with built-in CD-4 demodulator, SQ decoder and RM circuit.

All stages are directly connected and pure complimentary service circuit is adopted for the power amplifier section, and performances as KA-3004 are obtained. same class

By adding another pre-main amplifier and two rear speakers to the KA 3042, you can enjoy all four channels.

Model Rating

Type	4-channel de-modulator pre-main amplifier
Power Amplifier Unit
Effective power	20 Hz to 20 kHz, both channel operation : 14W + 14W (8 Ω) 1 kHz Single channel operation : 26W/26W (4 Ω) 18W/18W (8 Ω) Both channel operation : 20W + 20W (4 Ω) 16W + 16W (8 Ω)
Music Power (IHF)	80W (4 Ω) 52W (8 Ω)
Total harmonic distortion factor (8 Ω)	0.5% (at rated output) 0.07% (Rated Output -3dB)
Cross modulation distortion factor	0.5% (at rated output) 0.2% (Rated Output -3dB)
Output Bandwidth (IHF)	10 Hz to 45 kHz
Optimum load impedance	4 Ω ~ 16 Ω
Damping factor	32 (8 Ω)
Output terminal	Speakers and headphones : 4 Ω ~ 16 Ω
Preamplifier Section
Input Sensitivity / Impedance	Phono1 : 1.5mV/100k Ω Phono2 : 1.5mV/50k Ω Tuner, AUX, Tape Play (Pin) : 200mV/50k Ω Tape (Din) : 40mV/5k Ω
Signal-to-noise ratio	Phono1, 2 : 60 dB Tuner, AUX1, 2, Tape Play (Pin) : 75 dB
Maximum Input Voltage	Phono(1kHz):250mV(P-P) AUX(RMS):5V
Tone control	Bass : 100 Hz ± 10 dB Treble : 10 kHz ± 10 dB
Filter	Low : 40 Hz, 6dB/oct. High : 7 kHz, 6dB/oct.
Loudness control (rated output -30dB)	100Hz:+8dB 10kHz:+3dB
Front Out output	300mV/50 Ω
Matrix Decoder Unit
Phase shift	90 ° ± 10% (120 Hz to 9 kHz) 90 ° ± 3% (1 kHz)
CD-4 Demodulator Part
Separation (1 kHz, Standard Signal)	Left ⇔ Right : 50 dB Front ⇔ Rear : 30 dB
<General>
Power supply voltage	100 VAC / 117 V, 50Hz/60Hz
AC outlet	Power switch interlock : 1 system
Rated power consumption (Electrical Appliance and Material Control Law)	55W
External dimensions	Width 435x Height 153x Depth 300 mm
Weight	9kg