Press release

A Class-A Stereo Power Amplifier, the “S-05” will be available in October 2022.


TAMA, TOKYO, JAPAN, SEPTEMBER 5, 2022 – ESOTERIC COMPANY is proud to announce that a Class-A Stereo Power Amplifier, the S-05 will be available in October 2022.


Product Name Model Name Estimated Delivery Date Sales Region
Class-A Stereo Power Amplifier S-05 October, 2022 Worldwide


S-05 (Silver)

S-05 B (Black)


The S-05 is an all-new stereo power amplifier, borrowing from the engineering techniques utilized in our flagship Grandioso M1X mono block power amplifier. The new S-05 – a class-A power amplifier thoroughly focused on delivering all of music’s unique tonal qualities from a more compact stereo configuration, embracing the philosophy of the Grandioso M1X: “minimal circuitry – maximum output”.



Key Features
  • Lavish material employment, simple and straight circuit design concept borrowed from the Grandioso M1X
  • Finely detailed Class-A sound with super dynamics – an Esoteric’s signature tone
  • Dual monaural construction in all stages including current smoothing circuit for better channel separation
  • Esoteric’s proprietary current signal transmission, “ES-Link Analog” delivers music signal with exceptional high power and fidelity.
  • High capacity bi-polar 3 parallel push/pull circuit that instantaneously responds to the music signal
  • 940VA large EI-core power transformer that responds to dynamic current supply changes with high speed
  • Large “Grandioso grade” custom capacitors on each channel (10,000μF × 4/ch)
  • Balanced input amplifier for stable, noise-free signal transmission
  • BTL / Bi-amp mode switch for dual amplifier configuration
  • DC Trigger for sequential power ON/OFF with the N-05XD
  • Esoteric’s unique isolation feet and semi-floating top panel
  • Unique shaped heat-sink to minimize its own peak resonance

Key Specifications
  • Rated Output Power: 30W + 30W (8Ω, Class-A), 60W + 60W (4Ω)
  • Analog Inputs: ES-Link Analog x 1 pair, XLR x 1 pair, RCA x 1 pair
  • Overall Dimensions: 445 x 191 444mm (W x H x D, including protructions)

The design goal of ESOTERIC is to recreate the original master sound. ESOTERIC is a high end audio manufacturer established in 1987. Based in Tokyo, all products (ranging from network audio players, SACD players, DACs to amplifiers) are hand built in our factory to exacting standards. Cutting edge technologies, engineering excellence, state-of-the-art Japanese craftsmanship and passion for innovation -all coming together to unveil new dimensions in musical experience.