These products are based on Berning's patented architecture known as ZOTL, which stands for ZERO Hysteresis Output Transformer-Less.
Audioism ONE Headphone Amplifier
$1,595.00Price
Color
• Sensitivity: 1.2V RMS for 40 watts output
• Output impedance 1.6 ohms
• Input impedance: 50k
• 100V / 120V / 240V operation: Auto-switching
• Hum and noise: 94dB below full output (measured between 20Hz-20kHz) • Power output with 4-ohm load: up to 51W, 0.5% THD
• Power output with 8-ohm load: up to 46W, 0.5% THD
• Frequency response (8-ohm load): 8Hz to 50kHz, +0, -.5dB
• Amplifier class: Push-pull Class AB
• Net weight: 9.7 lbs. or 4.4 kg
• Finish: Aluminum case
• Tube complement: two 12AX7s, two 12AU7s, and four KT77s- Designed by David Berning
- Hand-wound coils & impedance converters
- 40 watts per channel with little or no hum
- Frequency response flat from 8Hz to almost 50Khz
- Transformer-less design eliminates intermodulation distortion inherent in all transformer designs
- Impedance converters effectively produce theoretically ideal output transformer turns ratio
- Low impedance output easily matches a wide range of speakers and cannot be damaged with no load
- No adjustments – tubes are auto-biased
- Automatic protection circuitry
- High voltage turn on delay to maximize tube life
- 10 - 20 years tube life depending on use
- Push-pull, Class AB output stage
- No heavy power or audio transformers
- Berning-designed, custom universal voltage power supply (autosensing 100-240VAC 50/60Hz)
- Has one input through Alps volume control
- Second set of inputs bypass volume control for direct input
- Uses 4 KT77s, 2 12AU7s, 2 12AX7s
- One year warranty including tubes (international buyers pay shipping