Esoteric
Esoteric Grandioso S1X Stereo Power Amplifier
Best ultimate fidelity for discerning audiophiles.
Experience unparalleled audio purity with the Esoteric Grandioso S1X Stereo Power Amplifier. This state-of-the-art amplifier delivers a stunning 50W per channel in pure Class-A, offering exceptional clarity, dynamic range, and vivid tonal colors. Esoteric's innovative ES-Link Analog system ensures pristine signal transmission from your preamplifier. Featuring a robust dual mono power supply with oversized toroidal transformers, the S1X provides ample current for the most demanding musical passages. Its versatile configuration options, including stereo, bi-amp, and mono-block modes, make it the ultimate centerpiece for a high-fidelity audio system.
$37000.00
More Grandioso Options
Owner Satisfaction
4.8
/ 5
Category Rank
38
/ 2552
#38 in Power Amplifiers
Price vs Category Average
+348%
Above average
Rated Output
505081001004
/ W + W (ohms Class-A), W + W (ohms)
Who it's for
- Discerning audiophiles seeking the ultimate in musical reproduction and emotional engagement.
- Luxury audio collectors appreciating meticulous engineering and a statement piece.
- Listeners with demanding speakers requiring immense power and precise control.
Who should skip it
- Budget-conscious enthusiasts or those seeking value for money.
- Apartment dwellers or those with limited space and setup flexibility.
- Newcomers to high-end audio or those preferring simpler plug-and-play setups.
Performance breakdown
Sonic Purity
Pure Class-A operation delivers unmatched transparency and vivid tonal richness.
Signal Integrity
ES-Link Analog technology ensures a pristine, noise-free path from your preamp.
Current Delivery
Oversized toroidal transformers provide effortless power for demanding musical transients.
Build Robustness
Massive 48kg chassis offers exceptional vibration control and long-term durability.
System Versatility
Seamlessly adapts between stereo, bi-amp, and mono-block configurations for any setup.
Harmonic Precision
Ultra-low distortion levels maintain absolute fidelity even at high output volumes.
Key Specs
Rated Output
50W + 50W (8ohms Class-A), 100W + 100W (4ohms)
Compatible Speaker Impedance
4ohms to 16ohms
Analog Audio Inputs
ES-Link Analog × 1 pair, XLR × 1 pair, RCA × 1 pair
Power Supply
AC 120V, 60Hz / AC 220-240V, 50Hz
Power Consumption
310W (270W at no signal)
Overall Dimensions (W×H×D)
491 × 221 × 536mm (including protrusion)
Weight
48kg
Frequency Response
5Hz to 100kHz (+0dB, –3dB, 8Ω)
Features
- Pure Class-A amplification for exceptional sonic purity
- ES-Link Analog for pristine preamp-to-amp signal transfer
- Dual mono power supply for robust current delivery
- Over-sized toroidal transformers for ample power
- Flexible stereo, bi-amp, and mono-block configurations
- Advanced heat dissipation for stable performance
- Minimalist circuit design for sonic clarity
- Robust build quality for durability and vibration control
What customers say
Customers consistently praise the Esoteric Grandioso S1X for its unparalleled sonic purity and robust power delivery, elevating the listening experience to an extraordinary level. Enthusiasts frequently highlight its exquisite craftsmanship and luxurious design, noting how the amplifier becomes a centerpiece in any high fidelity audio setup. The meticulous attention to detail in its construction resonates deeply, affirming its status as a benchmark product. While a significant investment, owners often describe it as a transformative component, delivering a profound sense of musical immersion that justifies its premium positioning. It truly redefines high end audio amplification.
Know before you buy
Pure Class-A amplification ensures that the transistors are always fully conducting, which eliminates switching distortion. This results in a remarkably smooth, natural, and detailed sound profile that excels at reproducing the nuances of delicate musical passages.
Yes, the S1X is designed for versatility and can be configured for mono-block operation. This allows you to use two units to drive your speakers with significantly increased power and separation for a more authoritative performance.
ES-Link Analog is a proprietary transmission system that provides a highly stable, current-based signal transfer between your Esoteric preamp and the amplifier. It is designed to minimize signal degradation and noise, ensuring the purest possible path for your audio.
The S1X is a substantial piece of equipment, weighing 48kg (105.82 lbs) and measuring 491 x 221 x 536mm. Because it operates in Class-A, it generates significant heat, so you must ensure it is placed on a sturdy, well-ventilated surface with plenty of clearance for airflow.
Yes, the S1X is highly compatible. It features standard XLR balanced and RCA unbalanced inputs, allowing it to integrate seamlessly into almost any high-end audio system, regardless of the brand of your preamplifier.
While 50 watts may seem modest on paper, the S1X’s robust dual mono power supply and oversized toroidal transformers provide massive current delivery. This allows it to drive even demanding, low-impedance speakers with ease and authority, maintaining control across the entire frequency range.
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