REVIEW: Ray Samuels Audio SR-71B balanced portable headphone amp
Oct 11, 2020 at 11:45 PM Post #226 of 226
Drop Ray an email at rsaudio@raysamuelsaudio.com

The batteries do stop taking a charge overtime. Also there was an update and if yours was bought before the update, Ray will update it for no charge. You just cover shipping.
Thanks Audio Addict!! Really appreciate the advice and the reminder, as I did buy mine before the gain update.
Cheers
 

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