We want to start by thanking everyone who’s bought a TOPPING L30 Headphone Amp from Apos Audio. We’re incredibly proud to sell this high-performing amp, and it seems that the Apos community loves it as much as we do.
We understand that some community members are concerned that their TOPPING L30 could potentially damage their headphones or IEMs. Our team has taken note of all concerns and is actively helping our customers. We want to clear the air and share with you what steps we’re taking to ensure the performance of the TOPPING products we sell and the longevity of your headphones and other gear.
The concern is about a terminal electrical breakdown in the amp that could potentially compromise headphones in rare circumstances. Although it’s statistically unlikely for you to encounter this issue with your L30, we want to do everything we can to ensure the issue is alleviated.
As a precautionary measure, TOPPING identified an opportunity to further improve the efficacy of the DC protection built into the L30. Since December 2020, TOPPING implemented improvements to the protection circuit in the L30. These improvements will further protect any headphone or IEM plugged into the L30 from unintended damage, even in the most extreme of failure scenarios. All L30s that include these improvements can be identified by a serial number starting with “2012”.
As of Monday, January 11, all TOPPING L30s sold on Apos Audio will have a serial number beginning with “2012” or higher. This serial number denotes the new batch of units, in which more safety measures have been implemented. If you own a TOPPING L30 with a serial number beginning with “2011” or lower and are concerned about the operability of the unit, please feel free to reach out to our Support Team.