Esoteric S-05XE Class A Stereo Power Amplifier

Experience the transparency unique to Class A operation combined with ESOTERIC’s signature sense of scale and richly dimensional soundstage. The S-05XE has been refined with cutting-edge new technologies, including a newly designed fully symmetrical balanced input buffer amplifier, a high-capacity 1,000VA toroidal core power transformer, and a unique dual-mono power supply smoothing circuit. The result is the S-05XE — a new benchmark in Class A stereo power amplification. Immerse yourself in ESOTERIC’s meticulously refined and further expanded signature sound to your heart’s content. Release date: March 2026.

Key Features

  • Simple, direct circuit design philosophy derived from the flagship Grandioso series amplifier architecture
  • Delivers ESOTERIC’s uniquely dynamic sound character with the precision of pure Class A operation
  • High-capacity bipolar transistors in a triple-parallel push-pull configuration for instantaneous response
  • Output power: 30W + 30W (8 ohms, Class A operation) / 60W + 60W (4 ohms) / 120W (BTL mode, 8 ohms)
  • Dual-mono construction throughout all stages, including power supply smoothing circuits, ensures complete left/right channel independence
  • Minimal negative feedback (NFB) for a more lively and engaging sonic character
  • Large-capacity 1,000 VA toroidal core power transformer for enhanced dynamic performance (S-05XE)
  • Newly redesigned power supply smoothing circuits improve left/right separation and channel independence (S-05XE)
  • Channel-independent, high-capacity Grandioso-grade custom block capacitors (10,000 µF × 4 per channel)
  • Newly developed Fully Symmetrical Balanced Input Buffer Amplifier minimizes noise and delivers exceptionally precise sound reproduction (S-05XE)
  • Proprietary ES-LINK Analog current transmission input for lossless delivery of musical energy
  • Three drive modes (Stereo / BTL / Bi-amp), with system expansion possible using two units
  • Trigger connection enables synchronized power on/off with the N-05XE
  • Semi-floating top panel and patented Pinpoint Isolation feet
  • Special wave-shaped heat sinks designed to reduce peak resonance
  • Top panel design inspired by the dual honeycomb heat-dissipation grilles of the Grandioso series (S-05XE)

Proudly made in Tokyo