| Schiit Audio Kara F Preamp & Headphone Amp (Forkbeard Compatible) Specifications | |
| Type | Passive |
| THD+N | Unmeasurable with APx555; below analyzer capability |
| Balanced to Balanced Gain | 1 (0dB) / 4 (12dB) |
| Frequency Response (Balanced to Balanced) | 20Hz-20kHz, -0.1dB / 3Hz-500kHz, -3dB (Gain 1) 20Hz-20kHz, -0.1dB / 3Hz-300kHz, -3dB (Gain 4) |
| THD (Balanced to Balanced) | <0.0002%, 20Hz-20kHz, at 4V RMS (Gain 1) <0.0004%, 20Hz-20kHz, at 4V RMS (Gain 4) |
| IMD (Balanced to Balanced) | <0.0002%, CCIR (Gain 1) <0.0004%, CCIR (Gain 4) |
| SNR (Balanced to Balanced) | >129dB, A-weighted, referenced to 4V RMS (Gain 1) >123dB, A-weighted, referenced to 4V RMS (Gain 4) |
| Balanced to SE Gain | x1 |
| Frequency Response (Balanced to SE) | 20Hz-20kHz, -0.1dB / 3Hz-500kHz, -3dB |
| THD (Balanced to SE) | <0.0003%, 20Hz-20kHz, at 2V RMS |
| IMD (Balanced to SE) | <0.0003%, CCIR |
| SNR (Balanced to SE) | >123dB, A-weighted, referenced to 2V RMS |
| SE to Balanced Gain | x1 |
| Frequency Response (SE to Balanced) | 20Hz-20kHz, -0.1dB / 3Hz-500kHz, -3dB |
| THD (SE to Balanced) | <0.0015%, 20Hz-20kHz, at 4V RMS |
| IMD (SE to Balanced) | <0.0022%, CCIR |
| SNR (SE to Balanced) | >122dB, A-weighted, referenced to 4V RMS |
| Headphone Gain | x1 |
| Maximum Power Output | 1W RMS per channel (32 ohms & 300 ohms) |
| Headphone SNR | >123dB, unweighted, referenced to 2V RMS |
| Headphone Crosstalk | >-90dB |
| Headphone Output Impedance | 0.25 ohms |
| Topology | Nexus™; current feedback with nested differential stages; discrete summed single-ended outputs with high-current headphone capability; intelligent headphone oversight and protection |
| Input Impedance | 10K ohms |
| Output Impedance | 75 ohms SE, 600 ohms balanced |
| Crosstalk | >110dB typical in all modes |
| Inputs | 2 XLR pairs, 3 RCA pairs (selectable via front switch or remote) |
| Outputs | 1 XLR pair, 2 RCA pairs (selectable via front switch or remote) |
| Volume Control | Relay-switched stepped attenuator with discrete thin-film resistors, 128 steps (0.625dB each) |
| Power Supply | 48VA transformer with dual series regulated +/-32V rails (Quietude™ topology) and regulated 5VDC for microprocessor |
| Remote | Standard IR remote for volume, input select, gain, mute, etc. Forkbeard control system for advanced functions and system integration |
| Power Consumption | 22W typical |
| Dimensions | 16” x 8” x 2” |
| Weight | 11 lbs |
