SPEC RSA-F33R EX
It’s an “ANALOG” amplifier "The myth that a "CLASS D" is a DIGITAL AMPLIFIER is incorrect. SPEC CORP. has adopted "Pulse Width Modulation" in our "CLASS D". This "PWM" converts "signal amplitude" to "duration switching" through “ANALOG PROCESSING”. This system doesn't digitize the audio signal. This is in fact type of analog amplifier because magnitude resolution is infinite. “CLASS D” with PWM contributes to bring you beautiful acoustical sound. In the past, some audio makers adopted delta sigma modulation for “CLASS D” . This is quite simply “1bit digital” modulation. Combination of switching technology and analog technology makes the sound realistic and beautiful." Specifications: Amplifier Maximum output 120 W × 2 (4Ω), 90 W × 2 (6Ω), 60 W × 2 (8Ω) Frequency response 10 Hz - 30 kHz ±1dB (6Ω, 1W) Harmonic distortion ratio 0.02% (at 1 kHz, 80% output) Input sensitivity, gain 300 mVrms, 37.3 dB (at MAX volume, 6Ω, 1kHz, unbalanced input) Line input terminals XLR input: 1 RCA inputs: 3 Speaker terminal 1 Power supply, other Power voltage 220 V AC, 50 Hz Electrical consumption With no signal: 15 W, during maximum output: 215 W (8 Ω, 100 Hz) External dimensions 450 mm (width) × 130 [...]