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Sony XM-4S full range class D review

Old 11-05-2007, 12:45 PM
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Sony XM-4S full range class D review

Sony XM-4S 4/3 Channel Slim Series Amplifier

4 Channels: 50W x 4 into 4 Ohms
Width (inch): 8-7/9
Height (inch): 1-5/7
Depth (inch): 7-5/7
40 amp fuse

This is a new Class D full range from sony. I baught 2 of these and the mono amp rated @ 230watts 4ohms. I couldn't resist with their small footprint and increadible pricing from cardomain.

I am running both XM-4S in 3 channel mode for my 3way active front end. Processor is a PG MX3i.

Tweeters and midranges are receiving 50watts rms and midbase is getting 100+rms in bridge mode.

I was somewhat worried at first because of the reputation that a lot of people associate with sony and because of their small stature. but no dissapointements here power wise, they play loud enough to make me happy. Similar to the pair of RF amps I had in their place (75watts X4 + 125 X 2).

They feel solid and look great, you can keep the blingy look with chrome front plate and blue leds, or you can turn off the leds and remove the front chrome panel making them even smaller and stealthy in pitch black.

I did notice that one of my amps had the RCA input colors reversed.

I opened one up only to find I couldn't see the interior. Since it is fan cooled all the nice part are facing the front of the amp. To bad.

The XM-1S mono amp does not have a fan and has dual 30 amp fuses but I have not used it yet.

All and all I am very impressed with the power they put out for their small stature.

-Very small and light
-cheep in price
-versitile look (blingy to bland and stealthy)
-decent power
-mounting feet could allow stacking
-cea2006 compliant @ 4ohms
-speaker level inputs with auto sensing turn on (No remote required)

-fixed 12db xovers @ 80hz
-branded sony
-low on features
-QC might not be that great
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Old 11-05-2007, 01:20 PM
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Well me being a bit of a sony fan myself im glad your happy with it keep us posted
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Old 11-05-2007, 01:38 PM
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I've never had a problem with their amps...head units yes. They'll get the job done.
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