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SPEC RPA MG1000 Both Units 1
RPA MG1000 Amp Unit Rear
RPA MG1000 Power Unit Rear
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spec rpa-mg amp japanese maple spruce woodmaking
  1. SPEC RPA MG1000 Both Units 1
  2. RPA MG1000 Amp Unit Rear
  3. RPA MG1000 Power Unit Rear
  4. image 13
  5. image 05
  6. spec rpa-mg amp japanese maple spruce woodmaking

SPEC RPA-MG1000 300W Monaural Power Amplifier

SKU: 81743 Category: Availability: Within 4 weeks

63.000,00 €

Experience music like never before. The SPEC RPA-MG1000 is an amp designed for those who want to feel the true essence of music, not just hear it. It delivers unparalleled sound pressure, clarity, and three-dimensionality. Built in Japan with premium materials like spruce and maple, it faithfully reproduces the artist’s performance, making it an essential addition to any high-end audio system. Enjoy the pure, dynamic sound that only SPEC can provide.

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Description

SPEC RPA-MG1000 300W Monaural Power Amplifier

To people who want to feel “MUSIC”

And, to people who feel the following:

  • Who want to feel the sound pressure of bass more.
  • Who feel that the sound of a violin should be softer and more comfortable.
  • Who think trumpet or human voice should feel more sound pressure.
  • Who think live music should be smoother and more transparent, not harsh.
  • Who want to feel the natural three-dimensionality of the stage.
  • Who don’t prefer about being different from the live tone.
  • Who don’t want fine sounds to be mixed into large particles.

Unprecedented realistic stage, RPA-MG1000 frees you from such worries. We aim to manufacture the best amps to experience music. The sound full of “musicality” faithfully reproduces the artistry of the performer.

The amplifier is a musical instrument

The most important concept of SPEC is “the amplifier is a musical instrument”.

The wooden panels integrated with the amplifier provides beautiful and natural tones in the music. The bottom panel is made of thick SPRUCE wood, which is the same material used as the front panel of a violin. The side panels are made of MAPLE wood, similar to backside of a violin. They vibrate with music and enhance the beautiful natural tones.

violin image 02
violin image 03


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Like a musical instrument maker, we carefully selected materials and considered different combinations.

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Wooden feet of maple wood with hickory embedded in the center are designed in such a way that only the hickory located in the center is grounded.

The RPA-MG1000 is built as an instrument.

Music is a tone color

The sounds of instruments and human voice contain an enormous amount of detailed harmonic signals, which form a beautiful sound. The PURE DIRECT SYSTEM of RPA-MG1000 amplifies all these minute signals faithfully without exception.

playing violin
image 08

The sounds of violins contain a lot of detailed harmonics.

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Complex and miniscule harmonic overtones result in beautiful audio

Therefore,
SPEC takes special concern in the faithful representation of minute audio signals

Music is a Sound Pressure

800VA R-COER TRANSFORMER supplies powerful energy to the speakers to reproduce the sound pressure energy. Sound pressure is the energy of the instrument itself.


image 13

A high musical expression capabilities based on Class D.


300W FETs and PWM controller
Music signals are always changing sharply, so it is important to MOVE and STOP the speakers sharply and accurately for music expression. Class D method has high dynamic drive capability, so it is indispensable for music expression.　In addition, live musical instruments and voices are giving off strong sound pressure. Sound pressure is exactly the energy of music.


spec pwm fet amplifier flowchart
Very small FETs by Infineon Technologies supplies powerful energy directly to the speakers reproducing the sound pressure of the instrument. That’s because Class D works just as a switch instantaneously. Sound pressure is the energy of the instrument itself. Additionally, simple and small circuit enables the sound with high-speed and highly clear tone. This is possible due to FETs almost completely preventing heat generation. There is no huge heat sink. Only a small heat sink is on the board.

spec spatial expression image

Not only for timbre expression but also for spatial expression, the leading role is minute signal.

Stereophonics represent a stereo image of sound with a slight difference between the left and right signals.

With the reliable reproduction of minute signals, we can feel realistically a three-dimensional effect.

Therefore,
SPEC takes special concern in the faithful representation of minute audio signals

The leading role in musical expression is a minute signal.

SPEC delivers “music” to you in a system that does not compromise on minute signals.

PURE DIRECT CONNECTION

Direct connection at source device level. Conventional, pre-amplifier-based connections are small level connections. For small signals, transmission at a large level is advantageous because, the small signal in the small level signal shrinks further and could disappear completely. PURE DIRECT CONNECTION with Volume Controller is essential for the most fresh and most realistic reproduction.

ANALOG SYSTEM

DAmplifies almost all minute signals with analog attenuator and analog PWM. The SPEC system amplifies the “amplitude” by analog processing, so it can be called an analog amplifier.

CLASS D POWER STAGE

The CLASS D POWER STAGE absorbs the Counter electromotive force and drives the speakers accurately with its very low impedance.

spec pure connection graph schema

 

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The Class D FET (under the heat sink) and the low pass filter placed very close to the FET.

 

MUSICALITY SELECTOR

1. Neutral: Very close to the actual sound of the instruments.
2. Sophisticated: Artistic quality beyond the actual sound.

This method is quite different from conventional tone control. The frequency characteristics remain unchanged; each mode depends on the specific parts used.

But isn’t that the job of a pre-amplifier? ..No! The class D circuit has a very sensitive point. In the post-stage of Class D, musicality change can be achieved very effectively. We do not alter the frequency characteristics; instead, we modify the resonance characteristics of special parts in the post-stage of Class D.

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mica capacitor
“Huge monolith” mica capacitor
Ultrafast soft recovery diode
Ultrafast soft-recovery diode to make silence

 

spec maple sidepanel
Side panel for the sound (MAPLE)

 

RPA-MG1000 User Manual

Specifications

Maximum output 300 W × 2 (4Ω), 150 W × 2 (8Ω)
Speaker Impedance 4Ω-16Ω
Frequency response 10 Hz – 30 kHz ±1dB
Line input terminals XLR input: 1 RCA inputs:1
Speaker terminal NO.1,NO2
Power voltage 230V AC, 50 Hz/60Hz
External dimensions
(POWER UNIT)		 450 mm (width) × 180 mm (height) × 430 mm (depth)
External dimensions
(AMP.UNIT)		 450 mm (width) × 180 mm (height) × 455 mm (depth)
Weight (POWER UNIT) 27 kg
Weight (AMP.UNIT) 18 kg

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