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Reviews (2)

01 Jan, 2024
A great sounding headphone is just a few mods away
For the price the Superlux HD662 Evo is a good sounding closed-back headphone. However due to it's low price it's worth making some simple modifications to improve the sound. Swapping to the velour pads makes a big difference to the FR, but removing the inner felt on top of the driver, it's glued in place, replacing with 2 plys of toilet paper and blocking off 4 of the 6 holes as per diyaudioheaven website made a useful fix for high frequencies spikes. I did it, so no special skills needed just some confidence and the fact that if you really screw up you've only lost £35 but you'd have to be pretty ham-fisted.
The headphone clamp is quite strong and I have a small head but it does make for a good seal and will loosen over time. The velour pads are a little scratchy so I've ordered a pair of Brainwavz XL pads which are also a little deeper so the FR will likely change again.

30 Jul, 2023
Terrific value and unexpectedly good sound quality
My AKG K702s sound great through this tiny amp on stock tubes but even better after Mullard M8100 tube swap. It drives these headphones with so much more authority and musicality at 10 oclock volume compared to 12 oclock volume on my ifi Zen Dac V2 even with true bass on. It's a no brainer purchase especially at this ridiculously low price. A great entry into hybrid tube amps.