The Esoteric C-03Xs preamplifier and S-03 power amplifier specifications detail features, performance data, and installation notes.
The C-03Xs Stereo Linestage Preamplifier offers independent dual‑mono design, high‑precision ball‑bearing controls, and a quad volume control system. It provides 52 dB (MM) or 72 dB (MC) gain, low distortion, and a 19 W power consumption in a compact chassis.
The S-03 Stereo Power Amplifier delivers up to 580 W into 2 Ω, with a 2×2 dual‑mono power supply, high‑current LAPT transistors, and a robust 940 VA transformer. It features low‑impedance output, a 1,000 damping factor, and extensive connectivity options.
| Gain (MM/MC) | 52 dB / 72 dB |
|---|---|
| Input Sensitivity (MM/MC) | 5 mV / 0.5 mV |
| Signal‑to‑Noise Ratio (MM/MC) | 91 dB / 76 dB |
| Power Consumption (C‑03Xs) | 19 W |
| External Dimensions (C‑03Xs) | 445 × 162 × 457 mm |
| Weight (C‑03Xs) | 28 kg |
| Rated Power Output (S‑03) | 145 W per channel into 8 Ω |
| Maximum Power Output (S‑03) | 580 W into 2 Ω |
| Power Consumption (S‑03) | 440 W (no signal: 160 W) |
| External Dimensions (S‑03) | 445 × 221.5 × 476 mm |
| Weight (S‑03) | 48 kg |
| Frequency Response (C‑03Xs) | 1 Hz – 200 kHz (-3 dB) |
| Total Harmonic Distortion (C‑03Xs) | 0.0006 % (RCA) |
| Signal‑to‑Noise Ratio (C‑03Xs) | 116 dB (2 V input, A‑weighted) |
The C‑03Xs preamplifier consumes 19 W.
The S‑03 can deliver up to 580 W into 2 Ω and 145 W per channel into 8 Ω.
It uses Esoteric‑QVCS, a quad volume control system with four precision switched resistor ladder networks.
Both the C‑03Xs and S‑03 are proudly made in Tokyo, Japan.