Developed based on the flagship model DA006, the DA006Lite Edition embodies the technological essence of the flagship DA006. While ensuring exceptionally excellent sound performance, it significantly reduces the selling price. Compared with previous models such as DA004 and DA005, its sound quality has been greatly improved.
The DA006Lite Edition offers clearer and richer details, a stronger sense of texture, a more stable sound foundation, better detail control, a wider soundstage, fuller and more powerful sound, and smoother and more natural audio performance than the DA004/DA005.
The DA006Lite retains most of the technological essence of the DA006, such as a high-precision multi-clock system and FPGA digital processing function similar to those of the DA006, and it also adopts two ES9039pro chips. The main differences between the DA006Lite and the flagship DA006 lie in the design of the power supply system, analog output circuit, and some digital algorithms.
The DA006Lite uses 2 well-designed high-quality toroidal transformers to supply power to circuits with different functions. These 2 toroidal transformers output a total of 7 groups of AC power, which then enter their respective rectification and voltage stabilization circuits. After that, the power is sent to the second-stage precision voltage stabilization and finally output to the terminal. The DA006Lite is equipped with 7 groups of first-stage voltage regulators and 14 groups of second-stage voltage regulators. The reason for designing so many groups of power supplies is to ensure that different functional circuits can have their own clean power sources, preventing sound performance from being affected by power crosstalk. In positions sensitive to power quality, such as the clock and DAC chip, the LT3045 with an output noise as low as 0.8uVrms is used for power supply.
Just like the flagship DA006, the DA006Lite adopts a voltage stabilization circuit built with silicon carbide rectifier diodes and high-current discrete components to supply power to the analog output.
The analog output of the DA006Lite is composed of all discrete components. Since the ES9039pro outputs a large signal current (with a peak value of approximately 60mA) in the multi-channel parallel output mode, ordinary integrated operational amplifier chips cannot handle it at all. Therefore, we have specially designed an operational amplifier circuit composed of discrete components with high-current handling capabilities. The DA006Lite has 8 units of discrete operational amplifier circuits, all operating in Class A mode. Compared with the common integrated operational amplifier output method, the discrete output circuit of the DA006Lite has all-round listening advantages, such as more natural, full, mellow, and smooth sound.
In the selection of basic components, the DA006Lite makes no compromises. For example, all resistors in the entire device are low-temperature-drift film resistors with an accuracy of 0.1%. At the same time, according to the circuit characteristic requirements of discrete components, many matched twin triodes are used. The AC-DC rectifier circuit is composed of silicon carbide rectifier diodes and high-speed, high-current Schottky diodes.
The DA006Lite is equipped with multiple custom low-noise clocks of different frequencies to process digital audio signals of various frequencies. For the input I2S signal, the DAC supports two optional clock modes: synchronous and asynchronous.
The DA006Lite has a built-in high-quality USB interface, and the clock of the USB interface is completely synchronized with the DAC chip. Therefore, when inputting via USB, the clock synchronization method is always used to decode the audio signals received by USB. To isolate the input noise of the USB port, we have designed and added a high-speed bus isolator at the USB port, and connected a USB HUB chip at the back end. At the same time, a low-noise clock is specially set for it to reorganize USB data. The USB interface can support a maximum bit rate of DSD1024 and PCM768.
In order to achieve satisfactory sound performance, we have spent a lot of time on the selection of basic materials such as capacitors, resistors, and solder used in the DA006Lite. For example, Mundorf electrolytic capacitors are used, and welding materials (solder, solder paste) are also selected through listening comparisons.
Main Features
1. Adopts the newly developed all-discrete analog output circuit with high-current handling capability, with a total of 8 circuit units for the two channels.
2. The power supply for the left and right channels and the digital circuit is designed separately, and each different power-consuming functional area has its own filter and voltage stabilization power supply circuit.
3. Circuits with different functions are powered by independent transformers, with a total of 2 high-quality custom transformers outputting 7 groups of AC power.
4. The analog circuit power supply adopts ultra-fast, high-current silicon carbide Schottky diode rectification, and the voltage stabilization adopts an all-discrete high-current design.
5. The entire device is equipped with a total of 7 groups of first-stage voltage-stabilized power supplies and 14 groups of second-stage voltage-stabilized power supplies, totaling 19 groups of voltage-stabilized power supplies.
6. For noise-sensitive areas, such as the power supply of the DAC and clock, a total of 3 LT3045 low-noise voltage stabilization chips are used.
7. Selected film capacitors are used as power supply bypass filters in key parts.
8. Equipped with a total of 4 high-quality custom clocks.
9. Supports synchronous and asynchronous working modes.
10. Built-in high-performance USB digital interface, supporting a maximum format of PCM768K and DSD1024.
11. The USB interface is equipped with the latest USB high-speed bus isolator and uses a built-in clock for USB signal reorganization.
12. 2 digital coaxial ports, 1 AES/EBU port, and 1 optical port, supporting PCM 192K or DOP64.
13. IIS-H differential I2S digital source input, supporting PCM768K and DSD1024, among which the sequence of the IIS-H port is adjustable.
14. I2S digital source input, supporting a maximum of PCM768K and DSD1024.
15. FPGA reorganizes the input audio data.
16. Adopts two ES9039pro DAC chips from ESS.
17. Single-ended output: 2.8Vrms; Balanced output: 5.6Vrms.
18. Total Harmonic Distortion + Noise (THD+N): < -117dB (A-weighted); Dynamic Range: > 127dB.
19. Dimensions (W x D x H): 430mm x 320mm x 90mm (including feet).
20. Net weight: 8.3kg.