What is Themis
Themis: A full-analog, solid-state preamp and headphone amplifier with an interchangeable core. Designed as a high-precision op-amp buffer, it delivers ultra-low distortion and output impedance, ensuring flawless performance across all frequencies and exceptional control, even for demanding headphone loads.
Specs
| Parameter | Value | Unit |
|---|---|---|
| Amplifier class | AB | |
| Pre mounted operational amplifier | NE5532 | |
| Supply voltage type | dual voltage | |
| Minimum supply voltage | +5, 0, -5 | Vdc |
| Recommended supply voltage | +12, 0, -12 | Vdc |
| Maximum supply voltage | +15, 0, -15 | Vdc |
| Program power (on all load impedances) | 5 | W |
| Maximum power (on all load impedances) | 10 | W |
| Standby power | 0.3 | W |
| Minimum raccomended supply current | 3 | A |
| Output gain | + 23.5 | dB |
| Minimum load impedance | 16 | Ohm |
| Nominal output current (+15Vdc, -15Vdc supply) | 0.95 | A |
| THD+N @ 1kHz | 32 Ohm | 5W | 0.002 | % |
| IMD THD | 32 Ohm | 5W | 0.003 | % |
| Slew rate (op-amp limited) | 9 | V/us |
| Output impedance @ 60 Hz | 32 Ohm | 3.5 | mOhm |
| Input impedance | 10 | kOhm |
| Bandwidth (-3dB) | DC - 570 | kHz |
| Audio bandwidth linearity | +- 0.01 | dB |
| SNR (non A-weight) @ 1kHz - 100W | 98 | dB |
| SNR (A-weight) @ 1kHz - 100W | 103 | dB |
| Inputs | 2 x unbalanced | RCA jacks |
| Outputs | 2 x unbalanced | RCA jacks |
| 1 | 6.3mm (1/4") jack | |
| 1 | 3.5mm jack | |
| Board dimensions | 99 (H) x 156 (W) | mm |
Board dimensions
