Digital Interface / Sound Card. 3.5 Line Out Cable. HiFi Vacuum Tube DAC USB Audio Decoder Stereo Headphone Amp ES9038Pro AK4497/90. Latest Windows driver & pre-configured Foobar2000.Soviet 6H6 and 6Z5P, while you can use other tubes (check in the following introduction). Both the USB module and the motherboard use the US Linear Technology's linear regulator chip with lowest ripple output, which is reduced to 0.8uV. The AKM low time-base error digital receiver chip is used and the US SiTime low phase noise clock is added to further reduce the time base error.
The coaxial and AES inputs use a digital isolation transformer to isolate front-end noise. Providing high voltage and regulator circuit for tubes to prolong its life, and the power supply is more pure. The USB module uses the latest XMOS U208, which is twice as fast as the previous generation U8.
The USB module I2S output has a digital isolation circuit that isolates the digital interference introduced by the computer. The USB module provides an external clock input.
A 3.3V output 22.5792Mhz or 24.576Mhz atomic clock or OCXO thermostat clock can be used. The MCU microcontroller is a 32-bit processor with very fast operation speed and a digital isolation circuit between the motherboard DAC, which eliminates the interference of the MCU to the high-precision DAC.
Tube rectification, switch supports 6.3V series and 5V series rectifiers 6Z5P, 6X5, 5AR4, GZ34, 5U4G, 274B, etc. Full vacuum tube output, support 6.3V and 12.6V series signal amplification tubes 6H6, 6H30, 6922, E88CC, 12AU7, etc.
The part of the headphone circuit is upgraded, the sound quality is improved, and when plug in the headphone the preamp output will be automatically disconnected. The high-power 150W and 100W dual toroidal transformers are independently multi-group power supply, 100W is responsible for the digital part, and 150W is responsible for the analog output. In order to provide the purest and extremely high margin power supply. The DAC chip and output coupling capacitor can be continuously replaced and upgraded.When a new type of DAC chip is released, we will provide the corresponding DAC module for users to plug in and upgrade. Users can change different output coupling capacitors to customize different tone performance. The MCU firmware downloader is included, and the user can upgrade the firmware to support more future DAC modules. Users can enjoy the latest DAC chip without changing a new machine.
The USB input supports up to PCM384Khz, DSD256 (AK4490), DSD512 (AK4497), DSD128 (ES9038Pro). RCA and true fully balanced XLR fixed level output with high and low level adjustment. Independent RCA interface preamp output, and amp output interface. Made with original components, American Vishay resistors, Obbligato Gold coupling capacitors, ruby, Panasonic, ELNA electrolysis.
High quality Taiwan gold-plated terminals, Swiss XLR terminals and power supply filter sockets. Aluminum alloy case, aluminum alloy isolation stand feet. The sound stage is extremely 3D, big, wide and deep. Silk smooth midrange and high. High resolution, reveal super fine sonic details.High dynamic, deep and well controlled bass. Frequency response: DC to 50khz. Output level: 5V balanced XLR, 2.5V single-ended RCA. Input interface: coaxial, optical, AES/EBU USB. USB supports up to PCM384Khz, DSD256 (AK4490), DSD512 (AK4497), DSD128 (ES9038Pro).
Other inputs support the highest PCM 24Bit 96Khz. 6.3V series: Soviet 6H6 (Default), 6n11, 6H30, E88CC, 6922, 6DJ8. 12.6V Series: 12AU7, 12BH7. 6.3V series: 6Z5P (Default), 6X5.
5V Series: 5R4, 5AR4, 5U4G, 5Y3, 5BC3, 274B, GZ34. Dimensions: (W) 345mm x (D) 380mm x (H) 150mm.
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Bringing great products and customer service. And thus help enriching our customers' lives is our ultimate goal. During holiday , pls allow us to response you early next week , kindly not leaving negtive/neutral feedback or make dispute/claim out of our working hours, thank you for your cooperation.The item "HiFi Vacuum Tube DAC USB Audio Decoder Stereo Headphone Amp ES9038Pro AK4497/90" is in sale since Monday, March 4, 2019. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps". The seller is "doukmall" and is located in shenzhen. This item can be shipped worldwide.