The King Headphone Amplifier provides a low impedance, low distortion, and wide frequency response output with high musical transparency. The output stage is a two-stage differential amplifier process; where it uses a dual-triode tube for the input stage followed by a P-channel MOSFET differential driver stage.The driver stage supplies complementary drive to the N-channel output devices. Overall negative feedback is taken back to the input stage to include the input triode in the feedback loop. The circuit is DC-coupled from input to output and a servo control circuit keeps the output DC offset to within millivolts of zero. The overall symmetry of the circuitry eliminates even-order harmonic distortion.
- Dual 1/4″ unbalanced jacks
- True SPL power meters calibrated for specific headphones
- Clipping and overload indicators
- RCA signal inputs
- XLR inputs (converted internally to unbalanced)
- Filtered and fused AC power module
- 110/220 VAC voltage selector
- Machined aluminum chassis
- Shock absorbing feet
Output Power | 6 W into 20 ohms load with less than 0.1% THD |
Frequency Response | 10 Hz to 100 kHz, -0.1 dB |
Total Harmonic Distortion | Less than 0.1%, 20 Hz to 20 kHz, full output |
SNR | -120 dB, A weighted |
Output Impedance | 0.3 ohms |
Input Impedance | 10k Ohms |
Power Requirements | 110 to 120 VAC, 50/60 Hz; 220 to 240 VAC, 50/60 Hz, externally switchable |
Power Consumption | 30 W maximum |
Dimensions | 11.8 x 4.33 x 12.8″ (30.0 x 11.0 x 32.5 cm) |
Weight | 3.5 lb (9.0 kg) |
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