TRIO KA-3004

Commentary

A pre-main amplifier developed by inheriting the design philosophy of the Hi-ATC series high-grade equipment.

All stages are directly connected + pure complimentary service circuit is adopted for the power amplifier section.
The equalizer uses a two stage, two power supply system.

The tone control also has a tone defeat switch.

Model Rating

Type	Solid-state stereo premain 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) 19W/19W (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
Output terminal	Speakers and headphones : 4 Ω ~ 16 Ω
Preamplifier Section
Input Sensitivity / Impedance	Phono1, 2 : 2.5mV/50k Ω Tuner, AUX, Tape PlayA, B : 150mV/180k Ω MIC : 1.3mV/10k Ω (Maximum Volume)
Signal-to-noise ratio	Phono1, 2 : 65 dB Tuner, AUX, Tape PlayA, B : 75 dB MIC:65dB
Maximum Allowable Input (1 kHz)	280mV(P-P)
Output Level / Impedance	Tape Play A, B Pin : 150mV/110 Ω Din : 30mV/50 Ω
Frequency characteristic	Tuner, AUX, Tape Play : 20 Hz to 50 kHz ± 1 db Phono1 and 2 : RIAA deviation ± 0.5 dB
Tone control	Bass : 100 Hz ± 10 dB Treble : 10 kHz ± 10 dB
Filter	High : 7 kHz, 6dB/oct.
Loudness control (rated output -30dB)	100Hz:+8dB 10kHz:+3dB
<General>
Power supply voltage	100 VAC / 117 V, 50Hz/60Hz
AC outlet	Power switch interlock : 2 systems Power switch not linked : 1 system
Rated power consumption (Electrical Appliance and Material Control Law)	50W
External dimensions	Width 435x Height 153x Depth 300 mm
Weight	8.5kg