Esoteric Grandioso S1 Stereo Power Amplifier – Made in Japan

$32,000.00 inc. GST

Esoteric Grandioso S1 Stereo power amplifier
Esoteric Grandioso S1 Stereo Power Amplifier – Made in Japan

$32,000.00 inc. GST

Following in the footsteps of the  M1 flagship mono amplifiers, the Esoteric Grandioso S1 benefits from its knowledge and technology. Featuring many of the M1 technologies, the S1 offers 600w (@2ohm) per channel and the same attention to detail in the hand-selected components and chassis construction. The S1 stands amongst the great stereo power amplifiers currently available, built with know-how that only ESOTERIC can offer.

Esoteric Grandioso S1 Information:

  • 600W into 2Ω Power Linearity for Outstanding Dynamics
  • Large-Capacity Custom Power Transformer — The Heart of the Finest Power Amplifiers
  • Breathtaking Speaker-Driving Power Worthy of a Flagship Stereo Amplifier
  • Balanced Input Stage Configuration Enables High Clarity Signal Amplification
  • Large, High-Performance Bipolar LAPT Transistors Deliver 34 Amperes of Instantaneous Output
  • 3-Stage Darlington Circuit with 5 Parallel Push-Pull Configuration
  • LIDSC (Low-Impedance Drive Stage Coupling)
  • Minimized Negative Feedback (NFB) for a More Energetic and Natural Sound
  • Independently Powered Voltage Amplifier Stage for Dramatically Improved Resolution
  • High-Quality Components Selected for Outstanding Characteristics and Sensitivity
  • High-Precision Chassis Construction for the Highest Levels of Vibration Suppression


Speaker Output
Rated ouput power 150W + 150W (8Ω)
300W + 300W (4Ω)
Maximum output power 600W + 600W (2Ω)
Analog audio inputs
XLR 1 pair
RCA 1 pair
Power supply
AC 230V, 50Hz
AC 120V, 60Hz
AC 220V, 60Hz
Power consumption
AC 230V model 430W (no signal: 150W)
AC 120V model 430W (no sginal: 150W)
External dimensions (W×H×D) 445 × 221.5 × 497.8mm
17-⅝” × 8-¾” × 19-⅝” (including protrusions)
Weight 47kg / 103-⅝ lb
Included accessories Power cord × 1
Felt pads × 4
Power cord support bracket × 1
Power cord support bracket screw × 2
Owner’s manual × 1
Warranty card × 1


Audio performance

Frequency response 5Hz to 100kHz (+0dB, –3dB, 8Ω)
S/N ratio 115dB (IHF-A)
Total harmonic distortion 0.003% (1kHz, 8Ω, 150W)
Gain 29dB
Damping factor 1000


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