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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

Pros:
Very efficient, loud enough, nice sound.
Cons:
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.
Other:
The chips themselves have differential inputs - it's really strange the manufacturer decided to tie them to ground considering the noise and popping problem.
Bottomline:
Really worth the money, but check if it suits your system (own ungrounded power supply needed) to avoid noise.

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