The Little Dot MK9 is an innovative tube headphone amplifier that emphasizes delivering a rich and expressive audio experience. Its design features a traditional three-tube setup: a single 6N9P tube handles the preamplification, while two 6080 tubes ensure a robust and detailed output. This amplifier utilizes a push-pull configuration with Single-Ended Push-Pull (SEPP) amplification and operates without output capacitors (OCL), a distinctive characteristic even among tube amplifiers.
This method enabled the achievement of a higher signal amplitude without distortion (up to 30 V peak-to-peak), enhanced the development of lower frequencies, and provided vocal elements with enhanced purity and clarity. The elimination of the output capacitor allows for deeper and more cohesive transmission of low frequencies, while the mid-frequency range maintains transparency even during intricate musical passages.
To ensure precise calibration and reliable circuit performance, a zero-tracking system for direct current was integrated, allowing for the omission of conventional signal decoupling methods. The power supply is designed in a symmetrical configuration, which contributes to the cleanliness of the power source and operational stability.
The device features relay protection and a specialized chip that safeguards against potential overloads when connecting sensitive loads. In addition to a headphone output, it includes a linear RCA output, enabling the MK9 to function as a tube preamplifier in conjunction with other amplifiers.
The output utilizes new RCA 6080 tubes manufactured in the United States, employing technology from the mid-20th century. These tubes are highly regarded for their unique sound characteristics and are considered among the most expressive options available in their category.
Little Dot MK9 Specifications :
- Input connector: RCA
- Output connectors: RCA (preamp) / 6.35mm headphone jack
- Frequency range: 12 Hz – 100 kHz (-1 dB)
- Distortion factor: 0.05% (load 300 Ohm, power 80 mW)
- Maximum output power: 300mW (600/300 Ohm) / 350mW (120 Ohm) / 250mW (32 Ohm)
- Output impedance: 32–600 Ohm
- Operating voltage: 110 or 220 V (user selectable)
- Power consumption: 80 VA
- Dimensions: 300x220x150 mm
- Weight: 4 kg
Price : $530
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