Feature(may vary by option.)
●Equipped with KORG Nutube 6P1, this next-generation vacuum tube sound, AMP card, KORG and Noritake Ise Electronics, is a next-generation vacuum tube, which operates just like the traditional three-pole vacuum tube, producing a rich double sound unique to the vacuum tube. Not only that, Nutube has significant power saving, reduced size, and more durable than conventional vacuum tubes. The AMP13 amplifies the voltage through this Nutube, providing the DX300/320 with the unique and attractive sound of the vacuum tube
●Low Noise Output Terminals + Maximum Output Terminals Two Single End Output Ports "Nutube 6P1" Voltage Amplification Limited Therefore, two levels of amplification is required to achieve higher output levels. The AMP13 adopts a design with two 3.5mm output terminals and a low-noise "low noise output terminal" and high power maximum output terminals. Low Noise Output Terminal (2.5Vrms): The AMP13 uses Nutube to amplify the voltage, but then the digital volume is adjusted and further amplified current/voltage. Low noise output terminals output signals after the first level of current amplifiation. Although the output level is reduced, the unique vacuum tube sound signatures are reflected deeply in color and superior noise control. Maximum output terminal (4.1Vrms): The signal is nutube and the first amplifier is performed through the second level. This allows the AMP13 to obtain higher current/voltage output properties and drive more powerful on the connected headphones or IEM
●Adopts 3-channel amplifier circuitsUnleash true performanceNutube produces the same rich parodonic component as traditional three-pole vacuum tubes, but the signal output is hard to say strong and difficult to control the noise that occurs. Therefore, the AMP13 employs a "3-channel amplifier" rather than the "2-channel amplifier" used by regular audio players. By amplifying the output ground signal using the "OPA1622" opping amplifier, it greatly reduces the noise floor and improves energy flowing and brings out Nutube performance
●Dedicated amplifier power supply + two Linear Technology DC-DC converter chips DX300/320 are powered by a unique "dual battery design" to provide power from an independent battery to the amplifier. This is a truly ideal architecture for the AMP13 where parts require more power. The AMP13 uses two high-performance Linear Technologys "DC-DC converter chips" at the main points, and two additional chips are combined with four DC-DC converters. One provides 1.8V to Nutube cathodes via low-noise LDO. The second is also provided to 21V for Nutube anodes. The other two provide 16V voltage respectively at 8V at a positive and negative voltage needed to drive the opamp
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Description
Dedicated amplifier power supply + two Linear Technology DC-DC converter chips DX300/320 are powered by a unique "dual battery design" to provide power from an independent battery to the amplifier. This is a truly ideal architecture for the AMP13 where parts require more power. The AMP13 uses two high-performance Linear Technologys "DC-DC converter chips" at the main points, and two additional chips are combined with four DC-DC converters. One provides 1.8V to Nutube cathodes via low-noise LDO. The second is also provided to 21V for Nutube anodes. The other two provide 16V voltage respectively at 8V at a positive and negative voltage needed to drive the opamp. Evolved Circuit Design 1. Continuing from AMP9, the Toshiba 2SK209-Electro-Field Transistor is used as a buffer of the signal output from Nutube. 2. Separate the ground of the signal and the ground of the shield, prevent noise interference. 3.Using proper negative return to the amplifier circuit, it can effectively reduce distortion and expand the frequency band. 4. Using JRC (Shin-Japan Radio) ultra-low noise audio volume reduces noise floor that can be heard in a quiet part of your music. It also improves the clarity of the sound itself. Every single piece of hand matched masterpiece is tested with Audio Precision precision audio analyzers and matched and tuned to bring out the performance of Nutube using a "Special Testing Machine" installed with three multi-turn potentiometers on the same foundation as the AMP13. Enjoy a clean and stretchy high range and unique sweet sound of vacuum tubes, with the AMP13 certified sound quality at every time. AMP13 can be used with DX300/320. However, please make sure to update the system firmware of the product to the latest system before specification