Testimonials

Overall Rating: 99.15%
Average Rating: 9.92/10
Have been enjoying SDS-470 for over a month now. Amp is a little jewel. Build quality is very impressive with the 12 inch x 12 inch x 3 inch block weighing in at over 22 lbs. Metal work is very nice though simple, almost minimalist, which I like. Spoke with designer of product about using the amp to power two 12 inch 4 ohm subs, and a pair of two way satellites. Tom claimed there should be no problem driving them all with this amp. He was spot on. The amp makes all the speakers sing like never before.Treble and midrange are crystal clear with pinpoint focus. Amp is dead quiet and when called for the dynamics are stellar. Soft passages are delicate and detailed and loud passages are presented with great speed and authority. Bass is clean with lots of punch and better integrated with sats than ever before. Pace, detail, soundstage and depth are better than I have ever heard on my system, by a very considerable amount. I replaced two 60 watt, cryogenically treated monoblock tube amps with premiums tube powering the 8 ohm sats and two 250 watt ss monoblock 12 inch 4 ohm subs with this one amp and it handily outperforms them all. The more I listen to this amp the more impressed I am with it. A side note:The first amp I received lost the left channel after two weeks. I contacted Tom and he promptly sent out a replacement and arranged for pickup of the defective amp. The way that this situation was handled speaks volumes to what kind of company Class D Audio is. The owner was first off all shocked that the amp went south, but really was concerned and apologetic for the inconvenience. As a bonus he threw in a little tweek on the replacement amp at no charge. Overall some of the best customer service I have ever experienced. I am one happy camper with this amp. Highly recommended, without hesitation.
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SDS-250C 4 Channel Class D Audio Power Amplifier
The Class D Audio SDS-250C is cut from the same fabric as the rest of the SDS line. It is quiet, clean and deals well with a variety of loudspeakers. The gain controls are a god-send for powering a surround sound system or satellite/subwoofer combination. The incorporation of XLR and RCA inputs increases the versatility of the amplifier. Highly recommended.
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"Congratulations on a great product, lovely design and great build quality. "
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"Hi, just received my order this morning and im very impressed . The SDS 250 c is far superior to the Nuforce ia7 v3 that i own too.It"s a bargain for the price. It's a kick ass."
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"Thanks Tom, My Anedio has extremely high output and I need about 5-6db less for a good match. The amp is really everything you said it would be, easily besting my ASLs in triode mode. Absolutely stunning in all regards. Kindest regards and please let me know if I can provide references."
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