[ VERSION 2 ]
What is Themis - [ VERSION 2 ]
Themis V2: A full-analog universal buffer, converter, and powerful headphone amplifier. Building on the first Themis, it offers seamless unbalanced to balanced signal conversion, 0-gain buffer for amplifier inputs, and high-power headphone output (3.5W) with both 3.5mm and 6.3mm options. Features interchangeable op-amps, auto-regulated voltage, and precision ALPS step potentiometer for ultimate audio 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 | +15, 0, -15 | Vdc |
| Maximum supply voltage (automatically regulated by the board if >12Vdc) | +35, 0, -35 | Vdc |
| Program power (on all load impedances) | 1.5 | W |
| Maximum power (on all load impedances) | 3.5 | W |
| Standby power | 0.3 | W |
| Minimum raccomended supply current | 1 | A |
| Output gain | + 13 | dB |
| Minimum load impedance | 16 | Ohm |
| Nominal output current (+15Vdc, -15Vdc supply) | 0.95 | A |
| THD+N @ 1kHz | 32 Ohm | 1W | 0.001 | % |
| IMD THD | 32 Ohm | 1W | 0.002 | % |
| Slew rate (op-amp limited) | 9 | V/us |
| Output impedance @ 60 Hz | 32 Ohm | 3.5 | mOhm |
| Input impedance | 10 | kOhm |
| Bandwidth (-3dB) | DC - 2 | MHz |
| Audio bandwidth linearity | +- 0.01 | dB |
| SNR (non A-weight) @ 1kHz - 100W | 98 | dB |
| SNR (A-weight) @ 1kHz - 100W | 103 | dB |
| Inputs | 1 x unbalanced 2 x balanced | 6.3mm (1/4") jack |
| Outputs (buffer) | 1 x unbalanced 2 x balanced | 6.3mm (1/4") jack |
| Outputs (amplified) | 1 x unbalanced 2 x balanced | 6.3mm (1/4") jack |
| Headphone outputs | 1 | 6.3mm (1/4") jack |
| 1 | 3.5mm jack | |
| Board dimensions | 110 (H) x 220.5 (W) | mm |
Board dimensions
