This is a review and detailed measurements of the Extron XPA 1002 Plus class D amplifier. I am told used ones go for just $50 to $60 on ebay.
Having been designed for the custom integration market, the unit is quite compact and runs very cool. I like the signal and limiter/protection LEDs which are nicely replicated on the back as well:
Programmable gains with various control and trigger circuits complete a picture. And oh, my favorite, included AC power supply is there as well.
If you are not familiar with the brand, Extron made its name in video switching, becoming the de-facto standard for many years. I did not know they had gotten into amplification. I am told very high quality parts are used in there and as such, when they pulled out of commercial installs, there is good bit of life left on them.
Extron XPA1002+ Measurements
Let's start with our dashboard:
Oh wow, where did this good performance come from? Combination of noise+distortion as shown in SINAD is well above average:
SNR is good for class:
It is stable almost out of the box:
Frequency response unfortunately shows some load dependency:
It is not too extreme though.
Crosstalk is above average:
Multitone shows very low distortion where our hearing is sensitive but does rise fair bit with frequency:
Output power is right on the company specifications (which is some of the most detailed I have seen from any company):
Regulated switching power supply doesn't allow any headroom so what you get above, is all you have:
I was very surprised how well behaved the design is in our frequency vs power sweeps:
Conclusions
What a pleasure it is to see such competent amplifier performance from a sleeper like this. I see 200 watt version of it on ebay right now at same ridiculously low prices. If that one performs as well, it will be the buy of the century. The amp is feature rich, compact and cool running. Its protection circuit works well and unobtrusively as well.
I am happy to put Extron XPA 1002 Plus on my recommended list.
-----------
As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
Having been designed for the custom integration market, the unit is quite compact and runs very cool. I like the signal and limiter/protection LEDs which are nicely replicated on the back as well:
Programmable gains with various control and trigger circuits complete a picture. And oh, my favorite, included AC power supply is there as well.
If you are not familiar with the brand, Extron made its name in video switching, becoming the de-facto standard for many years. I did not know they had gotten into amplification. I am told very high quality parts are used in there and as such, when they pulled out of commercial installs, there is good bit of life left on them.
Extron XPA1002+ Measurements
Let's start with our dashboard:
Oh wow, where did this good performance come from? Combination of noise+distortion as shown in SINAD is well above average:
SNR is good for class:
It is stable almost out of the box:
Frequency response unfortunately shows some load dependency:
It is not too extreme though.
Crosstalk is above average:
Multitone shows very low distortion where our hearing is sensitive but does rise fair bit with frequency:
Output power is right on the company specifications (which is some of the most detailed I have seen from any company):
Regulated switching power supply doesn't allow any headroom so what you get above, is all you have:
I was very surprised how well behaved the design is in our frequency vs power sweeps:
Conclusions
What a pleasure it is to see such competent amplifier performance from a sleeper like this. I see 200 watt version of it on ebay right now at same ridiculously low prices. If that one performs as well, it will be the buy of the century. The amp is feature rich, compact and cool running. Its protection circuit works well and unobtrusively as well.
I am happy to put Extron XPA 1002 Plus on my recommended list.
-----------
As always, questions, comments, recommendations, etc. are welcome.
Any donations are much appreciated using: https://www.audiosciencereview.com/forum/index.php?threads/how-to-support-audio-science-review.8150/
