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I know this is a sourcing-question and these are frowned upon, but I've been searching for a while now, and can't seem to be able to find a compact, light-weight 1-or-2 channel amplifier with balanced input. I would need it for a 50W RMS speaker.

  • Mono or Stereo amplifier (1-or-2 Channel)
  • balanced input (connector: XLR, TRS, Phoenix .. doesn't matter, as long as its balanced)
  • at least ~50W RMS (~100W peak) for 4 Ohm speaker
  • light-weight and compact (Class D could help here)
  • waterproofing would be a bonus (like marine amplifiers)

A marine amplifier would be interesting, because they are usually smaller-sized, but they don't take balanced inputs.

The only interesing options I found so far is the Oxford Audio CMA220, but it only gives 20W / ch, is quite pricey ~$300 and hard to get outside of the UK it seems.

Oxford Audio CMA220

I am wondering if my required specs are really that special that they would be worth that price.

And I guess there could always be the option to build the amp from scratch, but I rather not, unless I absolutely have to.

  • 1
    IMHO, a question about what gear to use for a task is valid. Where to acquire it and the value is probably what to steer clear of. – Jeff Sebring Mar 14 '15 at 23:19
2

The Pear Drop amps are supposed to be pretty good:

http://www.bkelec.com/HiFi/ClassD/ClassD.htm

Compact Class D too.

  • Seems to be a bit harder to get outside the UK though. – Todd Wilcox Jun 10 '15 at 11:32
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XLR connections are typically on professional equipment so I would look there. Here is an amp that satisfies basically everything you need except for waterproofing.

http://www.bhphotovideo.com/c/product/648331-REG/Pyle_Pro_PTA1000_PTA1000_Professional_Stereo_Power.html

If you are willing to go the DIY route, Hypex has amp modules that go from 180 watts and up and accept a balanced input as standard.

  • It's also not that compact. 15 lbs is light for a power amp, but might not be in the wieght range the OP is looking for. – Todd Wilcox Jun 10 '15 at 13:23
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You might want to look at a Furman SP-20AB... I have the older version (no "B" on the end) and it's been a workhorse. Not sure what they're going for these days, though.

EDIT: Just noticed they're recommending not lower than 16 ohms in bridge mode, so... maybe not actually as suitable as I thought.

  • yes, it might not be powerful enough for our needs. but thank you for suggesting! – evsc Mar 12 '15 at 14:37

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