Just thought I would share the following announcement from LP on the latest firmware for the E7. See the links below. By the way, the E7 will ship out with this latest firmware.
https://mp.weixin.qq.com/s/8aB8mGJFUM7D93ea1WrjgQ
https://weibo.com/5819639917/502881...channel=4&s_trans=5819639917_5028812394599254
Here is a translation done by WeChat:
**Increased Battery Life, Reduced Bugs — E7 "Extended Range Firmware" Released! Revised EA4 and New Matching Cables Debut**
After the E7 series had been on the market for a while, we received feedback from many users. The vast majority are satisfied with the sound quality for the price, but there are two issues with usage: 1. The battery life is not long enough; 2. There are occasional crashes. In response to these issues, we have been working hard to optimize and have introduced corresponding solutions — the "Extended Range Firmware." Let us report the details.
1. **Battery Life Extended Up to 90 Minutes**
Currently, the battery life is insufficient because the E7, to fully utilize the potential of the dual 4497 DACs, does not compromise on power supply. The original firmware sees the E7 consuming up to 2.5W. With the "Extended Range Firmware," the hidden potential of the E7’s high-voltage battery can be further unleashed, increasing the full charge voltage by about 0.1V, and extending the battery life by 30-90 minutes (depending on the volume and whether using single-ended or balanced output), with total battery life exceeding 6 hours when using balanced output.
2. **Significant Mitigation of Freezing Issues**
Previously, some users reported that the E7 would crash during use. The E7 uses a new interface, the "LeOS" pure audio operating system, which aims to maximize usability without compromising on sound quality. Occasionally, the system fails to recognize files and repeatedly attempts to read them, leading to freezing. After updating to the "Extended Range Firmware," this issue can be mitigated, and "LeOS" will continue to evolve and improve. We welcome more feedback and corrections from everyone.
3. **Improved Sound Quality in LD Mode**
Hidden Benefit: For the refined version of E7, we have enabled more FPGA resources in the "Extended Range Firmware," enhancing the sound quality in LD (Low Distortion) mode. Although this increases power consumption, thanks to the battery's "special move," the battery life during balanced output can still reach 5-6 hours.
We highly recommend E7 users update to this firmware version!
Finally, at the Chengdu Headphone Expo, we also exhibited the further refined second version of the EA4 engineering model, with half the background noise of the units shown at the Shanghai Headphone Expo. We also showcased new matching cables (both 3.5mm and 4.4mm), with golden sandalwood shells combined with the Extreme Domain U58 cable, which not only looks good but also sounds better. We welcome all audiophiles to listen more and provide guidance in the future!"
