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Esoteric Grandioso S1X Stereo Power Amplifier

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The Grandioso S1X is a new Class-A stereo amplifier from Esoteric, embodying the company's ideals of dynamic sound and grand scale. It offers a powerful 2,400W/1 ohm and a compact form factor while delivering the transparent and detailed expressiveness of Class-A technology. A milestone model for audiophiles around the world.

 

Key Features
  • Newly designed drive stage with 5-parallel push-pull drive by large bipolar transistors
  • Pure Class-A operating range of 50W/8ohm provides a full musical expression that combines precision and dynamism
  • “ES-Link Analog” transmission pushes the limits of fidelity between preamp and amplifier
  • Superior power linearity for unparalleled dynamics (50W/8Ω to 100W/4Ω)
  • Large toroidal-core power transformer that is extremely responsive to dynamic current supply changes
  • 3-transformer configuration with independent power transformers for the pre-drive stage, main drive stage, and control system
  • Channel independent high-capacitance Grandioso custom capacitors (10,000μF × 6/ch)
  • Pure copper busbars, ultra-thick wiring, and shortest pattern connections significantly reduce internal impedance
  • Balanced audio connections in each circuit block to ensure low noise
  • High-quality parts such as FET switch for input switching, discrete amplifier module IDM-01, etc.
  • Stereo mode and bi-amp mode for further system upgradability with multiple units
  • Enlarged chassis to M1X size with newly designed Class-A construction
  • The chassis design optimizes internal vibration control by thoroughly pursuing a balance between “rigidity” and “flexibility”
  • Dual honeycomb grille and semi-floating top panel for heat dissipation and open sound characteristics
  • Pinpoint isolation foot with a unique structure to reduce mechanical stress
  • Unique wave-shaped heat sink to reduce peak resonance
  • DC trigger input for power on/off

 

Spec description

Output: 

Rated Output- 50W + 50W (8Ω Class-A)

100W + 100W (4Ω)

Compatible Speaker Impedance- 4Ω to 16Ω

Analog Audio Inputs: 

ES-Link Analog- x 1 pair

XLR- x 1 pair

RCA- x 1 pair

General:

Power- AC 120V, 60Hz

AC 220-240V, 50Hz

Power Consumption- 310W (270W at no signal)

Overall Dimensions (WxHxD)- 491 x 221 x 536mm (including protrusions)

Weight- 48kg

 

Audio performance

Frequency Response- 5Hz to 100kHz (+0dB, -3dB, 8)Ω

S/N ratio- 109dB (IHF-A, XLR)

Total Harmonic Distortion- 0.006% (1kHz, 8Ω, 50W)

Gain- 28.5dB (XLR)

34.5dB (RCA)

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