SPEC RSA- F33EX Integrated Amplifier

"...the sweet and rich tonal character in the mid to high ranges of the amplifier is almost like the tone of the best triode tube amplifiers"


Real, new-generation class-D amplifiers with latest highly accurate PWM switching devices
By employing the latest developed class-D amplifier devices, power MOS-FET achieves ideal highly accurate current switching in the power stage, and high-voltage gate driver IC with excellent time-axis control maximizes the ultimate PWM switching. The exceptional performance of the class-D devices ensures ultimate real-sound with quality damping in the mid to low ranges even when driving low-efficiency speakers. Furthermore, the sweet and rich tonal character in the mid to high ranges of the amplifier is almost like the tone of the best triode tube amplifiers.

Superb power source ensures the real musical sound
In order to maximize the potential of the unprecedented high performance of this amplifier (power utilization in the power stage at maximum output; 96%), we daringly employed a classical and very simple plus/minus power source composed of minimal numbers of high quality components, such as only transformers, bridge-diodes and capacitors.

Specially selected parts of low-pass filter contribute to the Real-Sound
The sound of this class-D amplifier owes a lot to the individual parts of low-pass filter in the final stage of the amplifier. The capacitor and the coil employed for the low-pass filter were custom-ordered after careful listening tests and guarantee the excellent musical sound of RSA-F33EX.




Wooden base-chassis and insulators to realize rich and beautiful instrument-like sound
In an unusual endeavour for an audio amplifier, natural wood was used for the base chassis and insulators.



Specifications
RSA-F33EX
Maximum output: 120 W × 2 (4O), 90 W × 2 (6O),
60 W × 2 (8O)
Frequency response: 10 Hz - 30 kHz ±1dB (6O, 1W)
Harmonic distortion ratio: 0.02% (at 1 kHz, 80% output)
Input sensitivity, gain: 300 mVrms, 37.3 dB (at MAX volume, 6O, 1kHz, unbalanced input)
Line input terminals: XLR input: 1 RCA inputs: 3
Speaker terminal: One
Power voltage: 220 V AC, 50 Hz
Electrical consumption With no signal: 15 W, during maximum output: 215 W (8 O, 100 Hz)
External dimensions: 450 mm (width) × 130 mm(height)
× 422 mm (depth)
Weight: 20kg