Hello all,
The improved E30 arrived from Topping yesterday and is now testing the operation.
The S / N of the E30 I purchased is 191173 ****, and the S / N of the E30 that I received from Topping this time is 191173 ****, which seems to be the product of the same production lot. The firmware version was the same as V1.06.
The test files were randomly switched using PCM44.1kHz to PCM768kHz and DSD2.8 to DSD22.5.
The test was first done with the firmware still at V1.06, then updated to V1.07 and retested. Below are the results so far.
1. Sound is frequently interrupted when playing DSD2.8
Completely improved.
2. Previously reported pop noise when stopping playback
It was improved.
3. Strange display when switching songs
It has been improved, but in rare cases, the Err display may appear for a moment.
4. When DSD is played after E30 is factory reset, a big pop noise occurs at the same time as the playback starts.
Not improved.
5. On rare occasions, when DSD is played after the PrE <> DAC switching operation, a large pop or noise occurs for a moment when the song starts playing.
Not improved.
6. In rare cases, when switching songs to PCM <> DSD, continuous noise is played at high volume.
Not improved.
7. It reacts to the remote controls of other companies.
It was improved.
Previously, the E30 also responded when operating the SMSL or SONY remote control nearby.
Although 1 was the biggest problem, it has been completely improved, and now you can purchase E30 with confidence. However, many ASR members have reported that the DSD2.8 problem has not occurred, and it is possible that the improved E30 is already on the market. Problems 3 to 6 in the back are minor defects, and I think they will be further improved in the future.
From the explanation of Topping so far, it seems that the problem of E30 this time is due to the program written in the MCU (Micro Control Unit).
The MCU is an IC that controls all the operations of the DAC. In the E30, STM8S005C6T6 from STMicro is used as the MCU.
The program is written in the EEPROM inside the MCU chip. I imagine that Topping rewrites the program by connecting a special tool to the board. Now you can understand what Topping said that if you send your E30 to China, we'll fix it and send it back immediately.