What is Themis
Themis is a full-analog, solid-state preamp and headphone amplifier: with a fully interchangeable core. The very high performance of an integrated operational amplifier in low level signals are well known to all engineers, their use is the most disparate in electronics. Themis is basically an op-amp buffer, created to drive even the toughest loads. Thanks to its very low distortion and very low output impedance, it offers high precision on all frequencies and perfect headphone control.
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
