SPEC Unveils RSA-EX1000: An Amplifier Designed Like a Musical Instrument

SPEC has introduced their latest integrated amplifier, the RSA-EX1000, a Class D powerhouse that's built with the philosophy of a musical instrument. This 200W per channel amplifier is not just about raw power; it's a fusion of technical precision and artisanal craftsmanship aimed at delivering an elegant and realistic sound.

At the heart of the RSA-EX1000 is a newly designed main circuit board. SPEC's engineers have meticulously minimized the signal paths from the volume controller to the low-pass filter. By shortening these routes, the amplifier preserves even the minutest harmonics—those subtle high-frequency signals that are essential for capturing the true tone of musical instruments. This attention to detail ensures that the delicate nuances of a violin or the rich overtones of a cello are transmitted without loss or distortion.

Understanding that wiring can introduce inductance and affect signal integrity, SPEC has reduced the circuit size, thereby minimizing the wiring effects. The Class D operation not only contributes to energy efficiency but also enables the use of smaller heat sinks mounted directly on the board. This design choice results in a compact yet powerful unit with outstanding characteristics.

The power supply is anchored by a custom-designed 600VA R-core transformer, known for its high efficiency and stable performance under dynamic musical passages. SPEC has also employed a thoughtful approach to capacitor selection, blending various capacitors placed strategically to match their specific functions within the circuit. This careful curation contributes to the amplifier's crisp, natural tones and faithful bass reproduction.

To combat noise and electromagnetic interference, SPEC has gone the extra mile with a comprehensive shielding strategy. The internal chassis is coated with EMC paint, and electromagnetic wave-absorbing sheets are used to achieve further isolation. Important units within the amplifier are separated by shielded structures, reducing any potential crosstalk or interference to an absolute minimum.

But what truly sets the RSA-EX1000 apart is SPEC's belief that amplifiers are musical instruments in their own right. This philosophy is evident in the choice of materials for the amplifier's construction. The RSA-EX1000 features side panels made of maple and a chassis constructed from laminated spruce—the same combination of woods traditionally used in violins. This not only enhances the aesthetic appeal but also actively contributes to the resonance and overall acoustic performance of the amplifier.

In terms of connectivity, the RSA-EX1000 is equipped with two balanced XLR inputs and three unbalanced RCA inputs, catering to a variety of audiophile setups. It supports speaker impedances from 4 to 16 ohms and boasts a frequency response range from 10 Hz to 30 kHz (±1 dB), ensuring it can handle the full spectrum of audio with finesse.

The amplifier comes with a remote control for convenient volume adjustments, and despite its robust build, it maintains a reasonable footprint with dimensions of 450 mm (W) x 180 mm (H) x 523.5 mm (D) and a weight of 28 kg.

The SPEC RSA-EX1000 is now available for purchase at a recommended retail price of $38,000 USD. For those seeking an amplifier that marries technical excellence with the soulful qualities of a finely crafted musical instrument, the RSA-EX1000 presents a compelling proposition.

SPEC Unveils RSA-EX1000: An Amplifier Designed Like a Musical Instrument

SPEC has introduced their latest integrated amplifier, the RSA-EX1000, a Class D powerhouse that's built with the philosophy of a musical instrument. This 200W per channel amplifier is not just about raw power; it's a fusion of technical precision and artisanal craftsmanship aimed at delivering an elegant and realistic sound.

At the heart of the RSA-EX1000 is a newly designed main circuit board. SPEC's engineers have meticulously minimized the signal paths from the volume controller to the low-pass filter. By shortening these routes, the amplifier preserves even the minutest harmonics—those subtle high-frequency signals that are essential for capturing the true tone of musical instruments. This attention to detail ensures that the delicate nuances of a violin or the rich overtones of a cello are transmitted without loss or distortion.

Understanding that wiring can introduce inductance and affect signal integrity, SPEC has reduced the circuit size, thereby minimizing the wiring effects. The Class D operation not only contributes to energy efficiency but also enables the use of smaller heat sinks mounted directly on the board. This design choice results in a compact yet powerful unit with outstanding characteristics.

The power supply is anchored by a custom-designed 600VA R-core transformer, known for its high efficiency and stable performance under dynamic musical passages. SPEC has also employed a thoughtful approach to capacitor selection, blending various capacitors placed strategically to match their specific functions within the circuit. This careful curation contributes to the amplifier's crisp, natural tones and faithful bass reproduction.

To combat noise and electromagnetic interference, SPEC has gone the extra mile with a comprehensive shielding strategy. The internal chassis is coated with EMC paint, and electromagnetic wave-absorbing sheets are used to achieve further isolation. Important units within the amplifier are separated by shielded structures, reducing any potential crosstalk or interference to an absolute minimum.

But what truly sets the RSA-EX1000 apart is SPEC's belief that amplifiers are musical instruments in their own right. This philosophy is evident in the choice of materials for the amplifier's construction. The RSA-EX1000 features side panels made of maple and a chassis constructed from laminated spruce—the same combination of woods traditionally used in violins. This not only enhances the aesthetic appeal but also actively contributes to the resonance and overall acoustic performance of the amplifier.

In terms of connectivity, the RSA-EX1000 is equipped with two balanced XLR inputs and three unbalanced RCA inputs, catering to a variety of audiophile setups. It supports speaker impedances from 4 to 16 ohms and boasts a frequency response range from 10 Hz to 30 kHz (±1 dB), ensuring it can handle the full spectrum of audio with finesse.

The amplifier comes with a remote control for convenient volume adjustments, and despite its robust build, it maintains a reasonable footprint with dimensions of 450 mm (W) x 180 mm (H) x 523.5 mm (D) and a weight of 28 kg.

The SPEC RSA-EX1000 is now available for purchase at a recommended retail price of $38,000 USD. For those seeking an amplifier that marries technical excellence with the soulful qualities of a finely crafted musical instrument, the RSA-EX1000 presents a compelling proposition.