The Esoteric S-05 witnessed the birth of an all-new stereo power amplifier, borrowing from the engineering techniques utilized in our flagship Grandioso M1X monoblock. The new S-05 – a class-A power amplifier thoroughly focused on delivering all of music’s unique tonal qualities from a more compact stereo configuration, embracing the philosophy of the Grandioso M1X: “minimal circuitry – maximum output”.
Esoteric S-05 Features and Specifications:
– Finely detailed Class-A sound with super dynamics – an Esoteric’s signature tone
– Dual monaural construction in all stages including a current smoothing circuit for better channel separation
– Esoteric’s proprietary “ES-Link Analog” delivers music signals with exceptional high power and fidelity.
– High capacity bi-polar 3 parallel push/pull circuit that instantaneously responds to the music signal
– 940VA large EI-core power transformer that responds to dynamic current supply changes with high speed
– Large “Grandioso grade” custom capacitors on each channel (10,000µF × 4/ch)
– BTL / Bi-amp mode switch for dual amplifier configuration
Specifications:
| Speaker output | |
| Rated output power | 30W + 30W (8Ω, Class-A) 60W + 60W (4Ω) 120W (BTL mode, 8Ω) |
| Compatible Speaker Impedance | 4Ω to 16Ω 8Ω to 16Ω (BTL mode) |
| Analog audio inputs | |
| ESL-A | 1 pair |
| XLR | 1 pair |
| RCA | 1 pair |
| General | |
| Power consumption | 245W (210W at no signal) |
| External dimensions (W×H×D) | 445 × 191 × 444mm 17-½” × 7-½” × 17-½” (including protrusions) |
| Weight | 30.7kg / 67-¾ lb |
Audio performance
| Frequency response | 5Hz to 100kHz (+0dB, –3dB, 8Ω) |
| S/N ratio | 102dB (IHF-A, XLR) |
| Total harmonic distortion | 0.007% (1kHz, 8Ω, 30W) |
| Compatible Speaker Impedance | 4Ω to 16Ω 8Ω to 16Ω (BTL mode) |
| Gain | 28.5dB |
