The Unison Research Unico Due Hybrid Tube Integrated Amplifier combines high-fidelity sound with optimal performance through meticulous engineering. Its unique design ensures minimal distortion and high transparency across a wide range of listening conditions.
The Unico Due utilizes a hybrid architecture, integrating tube and solid-state technologies. The preamplifier stage is built around two ECC83 double triodes, which provide warm, rich tonal characteristics, while the solid-state power output stages employ a combination of bipolar and MOSFET transistors. The sophisticated symmetrical BJT circuit allows for high linearity and low distortion due to separate feedback loops for AC and DC signals. By ensuring that the output transistors never turn off completely through dynamic Class A biasing, low distortion is maintained even at low volumes, enhancing the integrity of the audio signal. The power supply features increased capacitance and a shielded power transformer, ensuring stable energy delivery to sensitive components, thus preserving the delicate nuances of audio performance.
Key Features
- Three line inputs, one configurable as a phono input: This versatility allows seamless integration with diverse sound sources, ensuring efficient signal handling with minimal loss.
- USB input to an internal DSD 128 bit DAC: Delivers superior digital audio processing and high-resolution playback, leveraging advanced digital-to-analog conversion techniques.
- Standalone DAC capability: Provides a direct analogue line output from the DAC, allowing it to function as an independent high-quality digital audio converter.
- Low impedance subwoofer output: Optimizes signal delivery to active subwoofers, enhancing bass response while maintaining system coherence.
- AV input for home theater systems: Facilitates integration into multi-channel setups, enabling automatic input selection based on user preferences, thus optimizing user convenience.
- Dynamic Class A power amplifier biasing: Ensures continuous conduction of the output transistors, significantly enhancing sound quality at low volume levels while minimizing distortion.
- Sealed miniature relay switches for input selection: Preserves the integrity of low-level signals by minimizing interference and signal degradation.
- High-precision resistor array for volume control: Offers fine adjustment capabilities with 0.5dB steps, providing precise sound level management and greater control over audio dynamics.
- “Super symmetrical” configuration for output devices: Separately processes positive and negative signal polarities to ensure higher linearity and superior sound reproduction standards.
Technical Specifications
- Power output: Not specified
- Frequency response: Not specified
- Input impedance: Not specified
- Signal-to-noise ratio: Not specified
- Total harmonic distortion: Not specified
- Weight: Not specified
- Dimensions: Not specified
