MUB5 固件 | Firmware

标准版固件 | Standard Firmware

MUB5-V1.0C2.hex

出厂固件（默认）
Factory Firmware & Default

MUB5-V2.6H1.hex
发布时间：2026年4月
修改内容：
1. 修改关屏逻辑。                                      
   ① 非自动关屏模式下，按电源键关屏，只能按电源键亮屏，触控、按键、音量不会亮屏。  
   ② 自动关屏模式下和原来一样，可自动关屏可手动关屏，关屏后按电源键、触控、按键、音量均可亮屏。  
   ③ 增加关屏后自动返回主页并锁定主页，关屏后触控屏幕不会进入设置页面。  
2. 增益改四段。                                   
   ① 原高增益改超高Super(S)增益。  
   ② 增加处于正常增益与超高增益的中间档（高增益），以使音量调整更精细。               
3. 锁键模式由两个改为四个：ALL，NO VOL，NO Key，Touch。    
   ① ALL：全锁。  
   ② NO VOL：不锁音量旋钮。  
   ③ NO Key:不锁按键。  
   ④ Touch：只锁触控屏幕，音量和按键不锁。
4. 切换增益音量自适应。  
   ① 切换增益后自动调整为最接近原来声音响度的音量，以避免突然太大声影响使用体验。  
   ② 原来音量0切换后还是音量0。
   ③如果切换到更高增益后音量1仍比原来声音响度大，会自己把音量调整到0。
5. 增益改为弹出新窗口来四选一切换。
6. 修复"Runtime"会随机清零的bug。
7. 修复"Input"选择到”BT“，或“Output"选择到”LO"选项没有自动20S后返回主界面的bug。  
8. 修复LO模式下切换增益有时异常的bug。
9. 恢复出厂设置不再清零"Runtime"。

MUB5-V2.6H1.hex

Release Date: April 2026
Changes:
1. Modified screen-off logic.  
   ① In LCD Close-off mode, pressing the power button to turn off the screen and can only be turned back on by pressing the power button; touch, buttons, and volume will not turn on the screen.  
   ② In LCD Close-30S mode, it remains the same as before: the screen can be turned off automatically or manually, and after the screen is off, it can be turned back on by pressing the power button, touch, buttons, or volume.  
   ③ Added automatic return to the main display page and lock on the main page after screen-off; touching the screen after screen-off will no longer enter the settings page.
2. Gain changed to four levels.  
   ① Original high gain changed to Super gain.  
   ② Added an intermediate level (high gain) between normal and super gain to allow for finer volume adjustment.
3. Lock key mode changed from two to four: ALL, NO VOL, NO Key, Touch.  
   ① ALL: Full lock.  
   ② NO VOL: Volume knob not locked.  
   ③ NO Key: Buttons not locked.  
   ④ Touch: Only touch screen locked; volume and buttons not locked.
4. Volume adaptation when switching gain.  
   ① After switching gain, the volume automatically adjusts to the closest possible loudness to the previous level to avoid sudden loudness affecting the user experience.  
   ② Original volume 0 remains volume 0 after switching.  
   ③ If switching to a higher gain results in volume 1 still being louder than the previous loudness, it will automatically adjust the volume to 0.
5. Gain switching changed to a pop-up window with four options.
6. Fixed the bug where "Runtime" in the "About" menu would randomly reset to zero.
7. Fixed the bug where selecting "BT" in "Input" or "LO" in "Output" would not automatically return to the main interface after 20 seconds.
8. Fixed the bug where switching gain in LO mode would sometimes be abnormal.
9. "Recovery" operation in the "About" menu no longer clears "Runtime".

纯净版固件 | Pure Firmware

MUB5-V3.3N7A.hex、MUB5-V3.3N7E.hex
基于MUB5-V2.6H1的纯净版固件
发布时间：2026年4月
与MUB5-V2.6H1的差异：
  1. 无MUB5-V2.6H1升级的第9项，也就是在菜单"About"恢复出厂设置仍然会清零"Runtime"。  
  2. 取消了影响音质的"LCD Close"与"Auto off"的功能。菜单里面仍然显示有，但会无功能。
  3. 这两个固件只是声音风格不同。

MUB5-V3.3N7A.hex、MUB5-V3.3N7E.hex
Pure Firmware,Based on MUB5-V2.6H1
Release Date: April 2026
Differences from MUB5-V2.6H1:  
   1. Does not include item 9 from the MUB5-V2.6H1 upgrade, meaning that performing the "Recovery" operation in the "About" menu will still clear "Runtime". 
   2. Removed the "LCD Close" and "Auto off" functions that affect sound quality. They still appear in the menu, but no functions.  
   3. These two firmware versions differ only in sound style.

固件下载 | Firmware Download

202604固件资料打包下载（包括V1.0C2、V2.6H1、V3.3N7A、V3.3N7E；也包括升级的电脑端软件、升级说明文件）
202604 Firmware Package (including V1.0C2, V2.6H1, V3.3N7A, V3.3N7E; The PC software required for the upgrade, The upgrade instructions file)
MUB5...-Package_202604.rar (170MB)

固件资料分开下载：

注：如果下载比较慢，可能是多人同时在下载，服务器带宽被限制了，可以稍等等，错峰下载。
If the download speed is very slow, it may be due to too many people downloading at the same time, causing server bandwidth limitations. You can try again after waiting a few hours (download during off-peak hours).  

Clark的听感 | Listening Impressions

V1.0C2：声音鲜活、流畅，现场感强，好听耐听，很舒服，对系统的容忍度高，搭啥都好听。（适合90%的用户）
V2.6H1：相比V1.0C2横向声场更大，有更多声音细节，也更通透。
V3.3N7A：素质在V2.6H1基础上进一步提高，细腻精致，更加通透有层次，微动态好。
V3.3N7E：上面的N7A有点严肃，稍微缺点鲜活。N7E鲜活了，通透度进一步加强了。素质很高，但是有点刺激。

如果你是用MUB5作纯解码，那更高的素质通常会更好听，可能会是V3.3N7E≈V3.3N7A>V2.6H1>V1.0C2。

但如果是用MUB5直推耳机，素质高未必就会更好听，更取决于搭配与喜好。在AB的时候素质高会有优势，但单独听的时候就有可能V1.0C2更舒服，更让人感动，更耐听。

V1.0C2: The sound is lively, smooth, with a strong sense of presence. It sounds good and is easy to listen to for extended periods, very comfortable. It has high tolerance for system pairings, and it sounds great with whatever headphones you use. (Suitable for 90% of users who drive headphones directly.)
V2.6H1: Compared to V1.0C2, the horizontal soundstage is wider, with more sonic details, greater transparency and accuracy, and better vertical layering. Simply put, the sound quality has improved noticeably, but it also demands more from system pairings and may not necessarily sound better.
V3.3N7A: Sound quality is further improved upon the foundation of V2.6H1. It is delicate and refined, more transparent and layered, with better micro-dynamics. But the same issue applies: higher sound quality does not necessarily mean it will sound better when driving headphones directly.
V3.3N7E: The V3.3N7A above sounds slightly serious and lacks a bit of liveliness. The V3.3N7E sounds more lively, more passionate, with further enhanced transparency. The quality is very high, but it is a bit stimulating and not as easy to listen to for extended periods.

If you are using the MUB5 as a pure DAC, higher sound quality usually sounds better, and the ranking might be V3.3N7E ≈ V3.3N7A > V2.6H1 > V1.0C2.

However, if you are using the MUB5 to drive headphones directly, it may not necessarily be the case, as it also depends on the pairing. During A/B comparison, the ranking might still be the same as above, but when listening to music alone, V1.0C2 might be the most comfortable, the most moving, and the most listenable. At least I (Clark) still very much like V1.0C2 when paired with most headphones.

升级建议 | Upgrade Recommendations

1、升级流程比较复杂，且必须要使用电脑，只适合喜欢折腾的用户。
2、声音素质高未必会更好听，这取决于搭配，取决于喜好，也取决于整体系统的上限。V1.0C2可能仍然更适合你。
3、升级没有先后顺序，升级更高版本后仍然可以随时重刷回出厂固件V1.0C2。
4、因为升级后的声音不一定更适合你，没有条件反复升级对比的朋友，就不建议折腾了。

1. The upgrade process is relatively complex and requires a computer. It is only suitable for users who enjoy play.
2. Higher sound quality does not necessarily mean it will sound better. This depends on the pairing and the upper limit of the headphones. V1.0C2 may still be the most suitable for you.
3. There is no sequential order for upgrades. After upgrading, you can upgrade to the factory firmware V1.0C2 at any time.
4. Because the sound after upgrading may not be suitable for you, friends who do not have the conditions to repeatedly upgrade and compare are not recommended to bother with it.