Geek Pulse has flickering LED probably and popping. Destroyed a driver on my Beats Solo.
Waiting to hear back from customer service. I hope this is fixed soon. :-
I also have had a private email describing a blown driver on a pair of K7XX units.
I just replied to the ticket that was opened by the K7XX user. I haven't heard from the owner of the Beats Solos yet. I think it's important to bring up something that's probably obvious to long-time head-fiers, but maybe not-so-obvious to many people. It's the issue of power and the potential for system damage, or worse, ear damage.
If you look up the specs of the K7XX's, there are three pieces of information that are very important. First, sensitivity. Second, rated impedance. Third, maximum input power. In the case of the K7XX's, they have a sensitivity rating of 105 dB/V, and impedance rating of 62 ohms, and a maximum input power of 200 mW.
Geek Pulse has a single-ended output power of 3000 mW into 16 ohms. Quick calculations will tell you that into 62 ohms, Geek Pulse has a potential of outputting about 790 mW when the volume is set at -0dB. This is a recipe for broken headphones and, perhaps, a melted face. Please use with caution.
In the case of Beats Solos, I can't find maximum input power information, but I did find that the sensitivity is 115 dB/V and the rated impedance is 45 ohms. This means Geek Pulse has a potential of delivering about 1080 mW into these headphones. Again, I can't find the max power info on these guys, but I'm guessing they won't handle a full watt of power.
PLEASE use this EXTREMELY powerful headphone amp with caution. Use best practices. Power it up before it's receiving a signal. Turn the volume down. Start the music. Then connect your headphones. After a while you'll know where you like things set and you won't be in danger of face meltery.