SPEC CORPORATION

SPEC CORPORATION is a Japanese high-end audio manufacturer headquartered in Chuo-ku, Tokyo. Established on 6 January 2010 and led by President & Representative Director Naoki Harasawa, the company designs and markets premium audio components under the guiding philosophy that "the joy of music is only found in 'Real-Sound'." Its product range spans integrated and monaural power amplifiers, stereo power amplifiers, digital-to-analog converters, network players, line preamplifiers, phono equalizers, USB bridges, turntable accessories, and a variety of audio tuning accessories such as insulators, sound boards, and speaker bases. SPEC's flagship offerings include the RSA-EX1000 Real-Sound Amplifier, the RPA-MG1000 300W Monaural Power Amplifier, the RMP-DAC3EX digital-to-analog converter, and the RSP-55E Real-Sound Processor. The company has gained recognition in the audiophile press, with products reviewed in publications such as 6moons and High Fidelity, and has received awards including the FINGERPRINT AWARD 2025 for the RSA-EX1000, the FIDELITY AWARD 2022 for the RPA-MG1000, and multiple GOLD FINGERPRINT and BLUE MOON awards. The RPA-MG1000 was also selected for High Fidelity's "20 products out of 20 years" ranking. While based in Japan, SPEC actively seeks international distribution and works with exporter Muson Project, Inc. to reach markets outside Japan. The company demonstrates its products at international events such as High End 2014 in Munich. Its product lineup emphasizes advanced Class D amplification for high speaker drive power and energy efficiency, combined with analog technologies for phono reproduction. SPEC positions itself in the ultra-high-end segment of the audio market, targeting discerning audiophiles and music enthusiasts who prioritize realistic sound reproduction.

SPEC CORPORATION was established on 6 January 2010 in Tokyo, Japan, with Naoki Harasawa serving as President & Representative Director. The company was founded on the belief that "the joy of music is only found in 'Real-Sound'," and it has since dedicated itself to developing and marketing high-end audio products that communicate the sensations and excitement of realistic music reproduction. From its headquarters in Chuo-ku, Tokyo, SPEC has built a portfolio of audio components that includes integrated amplifiers, monaural and stereo power amplifiers, digital-to-analog converters, network players, line preamplifiers, phono equalizers, USB bridges, and a range of accessories. The company's product naming often incorporates the "EX" suffix, denoting its Real-Sound series. SPEC gained international attention through participation in trade shows such as High End 2014 in Munich, where it demonstrated four integrated amplifier models—the RSA-F3EX, M3EX, V1EX, and 717EX—featuring Class D amplification for high speaker drive power and energy efficiency. The company also introduced the REQ-S1EX phono equalizer amplifier, combining semiconductor and analog technologies for high-resolution vinyl playback. Over the years, SPEC's products have been reviewed in audiophile publications including 6moons, High Fidelity, and image hifi. The RPA-MG1000 monaural power amplifier earned multiple accolades, including the GOLD FINGERPRINT AWARD 2019, the BLUE MOON AWARD, and the FIDELITY AWARD 2022, and was selected for High Fidelity's "20 products out of 20 years" ranking. The RSA-F33EX won the GOLD FINGERPRINT award in 2017, and the RSA-EX1000 received the FINGERPRINT AWARD 2025. The RSP-W1EX processor was reviewed in High Fidelity, and the RMP-UB1 received positive evaluation from Musical Mecanics. SPEC continues to operate from its Tokyo headquarters, seeking distributors outside Japan and working with exporter Muson Project, Inc. to serve international customers. Its current product lineup includes the RSP-55E Real-Sound Processor, RSA-EX1000 Real-Sound Amplifier, RSA-BW7EX Real-Sound Amplifier, and RMP-DAC3EX digital-to-analog converter, among others.

• SPEC CORPORATION established in Tokyo, Japan.

• Demonstrated four integrated amplifier models (RSA-F3EX, M3EX, V1EX, 717EX) at High End 2014 in Munich.

• RSA-F33EX won the GOLD FINGERPRINT award 2017.

• RPA-MG1000 won the GOLD FINGERPRINT AWARD 2019.

• RPA-MG1000 won the FIDELITY AWARD 2022.

• RSA-EX1000 featured in HIGH FIDELITY and won the FINGERPRINT AWARD 2025.

Ultra-high-end audio manufacturer emphasizing realistic sound reproduction through its "Real-Sound" philosophy, targeting discerning audiophiles and music enthusiasts.

• RSA-EX1000

  Flagship Real-Sound amplifier, featured in HIGH FIDELITY and winner of the FINGERPRINT AWARD 2025.

• RPA-MG1000

  High-power monaural amplifier, winner of GOLD FINGERPRINT AWARD 2019, BLUE MOON AWARD, and FIDELITY AWARD 2022; selected for High Fidelity's "20 products out of 20 years" ranking.

• RMP-DAC3EX

  Digital-to-analog converter for "Real-Sound", real-life sound.

• RSP-55E

  New Real-Sound processor.

• RSA-BW7EX

  Real-Sound amplifier for realistic musical performance.

• RPA-MG3000

  High-power stereo power amplifier.

• RPA-MGCEX

  Pure direct controller.

• RMP-UB1EX / RMP-UB1SFPEX

  USB bridge for Diretta protocol.

• RSA-BW1EX

  Real-Sound amplifier.

• RSA-M99

  Real-Sound amplifier.

• RSA-G3EX

  Real-Sound amplifier.

• RPA-W3EX

  Real-Sound power amplifier, winner of BLUE MOON AWARD.

• RPA-W7EX

  Real-Sound power amplifier.

• RSA-F33EX

  Real-Sound amplifier, winner of GOLD FINGERPRINT award 2017.

• RSA-777EX

  Real-Sound amplifier, reviewed in 6moons.

• H-SL55

  Line selector.

• RSP-W1EX

  Real-Sound processor, reviewed in HIGH FIDELITY.

• RSP-AZ9EX

  Real-Sound processor.

• RMP-X3EX

  Real-Sound network player.

• H-VC5

  Volume controller.

• AP-CS5-K

  MM type cartridge with headshell.

• AP-UD1a / AP-UD1

  Analog disc sheet.

• AC-USB1-K

  USB noise remover.

• H-K3 / H-K4

  Wood insulator.

1. 1SPEC CORPORATION Official Websitespec-corp.jp
2. 2PRODUCTS : SPEC CORPORATIONspec-corp.jp
3. 3ABOUT US : SPEC CORPORATIONspec-corp.jp
4. 4SPEC Corporation (Japan) - Wikidatawikidata.org