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  • Overall Rating: 4
  • Price: 5
  • Quality: 4
  • Ease Of Use: 3
  • Usefulness: 4
Great, but with a design flaw – VMA2015 15W Stereo Audio Amplifier Evaluation Module (EVM) Board Reviews

posted by FrenkiBoy on 09/25/2012 Certified Owner

Involvement:Expert (understands the inner workings) - Ownership:more than 1 month

Very efficient, loud enough, nice sound.
Single ended (non-differential) input causes A LOT of noise when the player and amp are both grounded (or have a shared power supply) - only usable with own ungrounded supply (wall-wart is OK). Same issue causes popping on connection/disconnection of input cable. Too small connection points.
The chips themselves have differential inputs - it's really strange the manufacturer decided to tie them to ground considering the noise and popping problem.
Really worth the money, but check if it suits your system (own ungrounded power supply needed) to avoid noise.


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