An amplifier for the music. It's a Reference Model of SPEC
Real-Sound Power Amplifier
RSA-F33EX
An amplifier for the music. It's a Reference Model of SPEC
Real-Sound Power Amplifier
The top of a violin is made of spruce.
The back and ribs are made of maple.
Because an amplifier which has high gain is sensitive to rigidity and vibration, wooden structure provides suitable vibrational damping property.Like a musical instrument maker , we select materials and consider grounding method.As a result,the bottom plate is made of spruce, and the insulator is made of maple with hickory embedded in the center. They are the same as the material used for a violin.They vibrate with music and bring out the beautiful sound.This is why we say "the amplifier is a musical instrument".
The parts made of natural materials play the sound which is gentle to listen and fine textured.
These PAPER-OIL-CAPACITORS have been tuned exclusively by SPEC. It's a CAPACITOR for the MUSICALITY. Inner KRAFT PAPER brings completely beautiful tone.
PAPER-OIL-CAPACITORS
Mica capacitoers used in SPEC amplifiers are made of highest quality ruby mica.It is produced only at the foothills of the Himalayas. It is made by orogeny of the Himalayas.Mica of high purity is a great benefit from Himalayan orogeny movement and we can hear a profound silence.
PMICA CAPACITORS
We blend several capacitors to obtein the sound with MUSICALITY.
And,EMC coating absorbs internal noise reflections to offer especially transparent sound playback. As a result,the sound is warm,smooth and exceptionally creamy while keeping details.
R-core transformer plays a dynamic and powerful sound.
Because Class D system is using switching technology, the power stage doesn't generate heat at all. Therefore, HEAT SINK is not required.
In addition,you can't find any cooling hole on the amplifiers. This SEALING STRUCTURE prevents entering of the dust to the inside of an amplifier.
No heat and no dust mean long life with clean environment.From circuit point of view, small size circuit will playback highspeed and detailed signal as it is.It is most important for the Musical expressions.
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.
| 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 mm (height) × 422 mm (depth) |
| Weight | 20 kg |
| Included items | |
| Power cord | 1 |
| Operation manual | 1 |
* Due to improvements the above specifications and external appearance may be changed without notice.
The following separately sold accessories are available.
