Esoteric Grandioso S1X - Stereo Power Amplifier

Great S1X
Open, dynamic, yet incredibly pure.
A new milestone in Class A stereo amplifiers: Grandioso S1X.

Pure Soundscape

With the birth of the Grandioso M1X, our flagship monoblock power amplifier, the Esoteric amplifier design platform has been completely revamped. The Grandioso S1 is now reborn as the Grandioso S1X, the new flagship of an entirely different class of Class A stereo power amplifiers.
The M1X monoblock embodies Esoteric's idea of ​​the ideal amplifier. The dynamic sound of the M1X, produced by a completely redesigned drive stage and a powerful power supply incorporating a huge amount of material, has captivated audiophiles around the world. The S1X, a Class-A stereo model, beautifully follows the M1X's signature sound of "a sense of dynamism that unleashes the full power of the music" and "a sense of grand scale." In exchange for its high power of 2,400 W/1 ohm, the S1X offers a halved spatial form factor and the transparent, detailed expressiveness that only Class-A can provide. Here is a foundational model that realizes Esoteric's ideals of the Class-A stereo amplifier.

Main features
Newly developed drive stage with 5-parallel push-pull drive via large bipolar transistors
Pure Class A operating range of 50W/8ohm for full musical expression combining precision and dynamism
"ES-Link Analog" transmission pushes the limits of fidelity between preamplifier and amplifier
Superior power linearity for unmatched dynamics (50 W/8 Ω to 100 W/4 Ω)
Large toroidal core power transformer extremely responsive to dynamic variations in the power supply
3-transformer configuration with independent power transformers for the pre-drive stage, main drive stage and control system
Custom Grandioso high-capacity channel-independent capacitors (10,000 μF × 6/ch)
Pure copper busbars, ultra-thick wiring and shorter connection pattern 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, IDM-01 discrete amplifier module, etc.
Stereo mode and bi-amp mode for further system upgradeability with multiple units
Chassis enlarged to M1X size with newly developed Class A construction
The frame design optimizes internal vibration control by carefully seeking a balance between "stiffness" and "flexibility"
Double honeycomb grille and semi-floating top panel for heat dissipation and open sound characteristics
Precise isolation foot with unique structure to reduce mechanical stress
Unique wave-shaped heat sink to reduce peak resonance
DC trigger input for power on/off