Themis V2 is a universal analog buffer and headphone amplifier developed to handle balanced and unbalanced signal conversion while also providing dedicated headphone drive. Compared with the original Themis, the V2 platform shifts from a simpler preamp/headphone role toward a broader signal-interface function inside mixed audio systems.

The product overview describes the board as supporting balanced/unbalanced conversion, zero-gain buffer operation, dual discrete amplification stages, and automated voltage regulation. In the standard configuration, the board uses a pre-mounted NE5532 operational amplifier, combining a conventional analog front end with a wider routing and interface role than the first version.

Themis V2 operates from dual rails between ±5 V and ±35 V, with ±15 V recommended. When the input exceeds 12 Vdc, the board is specified as automatically regulated. Power delivery is rated at 1.5 W program power and 3.5 W maximum power, with 0.3 W standby power, 1 A minimum recommended supply current, and a minimum load impedance of 16 Ohms.

The measured performance targets remain strong. THD+N is specified at 0.001% at 1 kHz, 32 Ohms, 1 W, and IMD THD at 0.002%. Slew rate is 9 V/us, output impedance is 3.5 mOhm at 60 Hz into 32 Ohms, input impedance is 10 kOhm, and output gain is +13 dB.

The frequency response extends from DC to 2 MHz (-3 dB), with audio-band linearity of ±0.01 dB. Noise is specified at 98 dB non A-weighted SNR and 103 dB A-weighted SNR. These figures indicate that the V2 revision pushes bandwidth further while retaining the same low-impedance output behavior and headphone-load capability class as the underlying amplifier stage.

Connectivity includes unbalanced and balanced 6.3 mm jack I/O for input, buffer output, and amplified output stages, plus dedicated 6.3 mm and 3.5 mm headphone outputs. The board measures 110 mm x 220.5 mm. In practical terms, Themis V2 is aimed at systems where signal adaptation, routing flexibility, and headphone amplification need to exist on the same analog platform.

Read instead about Themis [V1]