Compared with S2, the improvements are as follows: 1. It adopts integrated CNC body + 2.5D glass panel, and the process is improved. 2. Replace the new MCU control with a display screen and support volume adjustment(0~60 level), 8 kinds of filter adjustment, one-key mute and other functions, and all with memory function, no longer worry about the volume adjustment is too large or too small. 3. Newly added balanced output, using 4.4 output, retaining the original 3.5 single-ended. 4. Optimized the power supply, MCU, etc., the power consumption of the whole machine is maintained the same as that of S2, and the power consumption will not increase significantly. 5. The standard upgrade data cable is very soft
Melody S2, using AK4497 decoding chip, full firepower, and adding MCU(Single chip microcomputer)Control, as the current market with the same configuration and small size decoding amp, excellent PCB layout design, full architecture, positive and negative dual power supplies, improved power efficiency, power consumption only compared to S1(AK4493 version)Slightly larger, iphone can be directly driven and used(However, the power consumption is still large compared to other decoders. S1 ii is still recommended for pure mobile phones.), Adopting player architecture design, without any castration, MCU+USB asynchronous(Three high-precision crystals)+DAC+LPF+AMP architecture, standard 5 lines(Type-C OTG cable, PC data cable, Apple OTG cable, type C independent power supply cable, Micro USB OTG cable), All wires are re-customized and durable.
Compared with other decoding lines, S2 has the following advantages:
1. Using the player design architecture design, full firepower.
2. Built-in MCU microcontroller, responsible for controlling DSD(DOP mode)Hard solution, adjust the filter and so on.
3. The AK4497 decoding chip was used on the decoding line for the first time(S1 is our first use of AK4493 on the decoding line), And the working voltage is 5V in full fire mode
4. The LPF low-pass filter circuit is debugged for 4497, and the op amp adopts OPA1612 JFET input dual op amp.
5. The headphone amplifier part adopts Melody A1S operational amplifier, the sound is delicate and sweet, and the thrust is great.
6, S2 is a direct coupling mode, the sound is more delicate, transparent and warm.
7. Multi-group power supply architecture is adopted, and the operational power supply of the operational amplifier adopts positive and negative voltage power supply.
8. S2 supports 4 kinds of DAC filter adjustments and 4 gain adjustments to prevent excessive thrust(Many S1 users complain about too much thrust).
9. It adopts 6-layer FR-4 military-grade PCB board, which has strong anti-interference, and there is no interference when using mobile phones.
10. The shell is made of high-precision CNC aluminum alloy.
11. Compatible with multiple platforms, support windows, mac, Linux, IOS, Android
S3lite is smaller in size, lower in price, more power-saving, no heat, high bit rate, and keeps the volume and independent adjustment of the secondary screen