aaa battery amps for Electronic Appliances - Alibaba.com
AAA 300-210T – Ashdown Engineering
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Ashdown AAA-30-8 – Ashdown Engineering
HELM DB12 AAAMP Mobile Headphone Amplifier, THX AAA Technology, Analog Amplifier, 12 dB Signal Boost,+6 dB Bass Boost, THX Certified, Male 3.5mm to Female 3.5mm Audio Jack: Amazon.co.uk: Electronics & Photo
Archimago's Musings: REVIEW / MEASUREMENTS: Drop + THX AAA 789 Linear Headphone Amplifier. And on Audioholics' THX Onyx DAC/amp "review" with a dash of MQA nonsense...