For sale is a McCormack DNA-225. Not much needs to be said about this classic powerhouse which is 1ohm stable. Please see the Stereophile link above for review and measurements. From this review:With a low-duty-cycle 1kHz toneburst, which generates results that more closely resemble what happens when the amplifier is amplifying music, the DNA-225 was revealed as a powerhouse. Fig.8 again plots the change in THD with output power (noise not now included), with the 1% clipping point shown as the horizontal magenta line. No less than 303W were raised into 8 ohms (black trace), with 575W available into 4 ohms (red), 1018W into 2 ohms (blue), and 1532W into 1 ohm (green). But that's not the end of the story. I plotted this graph using a decibel vertical scale rather than the usual percentage scale, which more clearly shows what happens at high powers. The McCormack actually clips very gently, meaning that to pick the 1% THD point is more arbitrary than with an amplifier that hard-clips. Under real-world conditions into low impedances, the DNA-225 rolls up its sleeves and puts out serious current—more than 40A into 1 ohm! Operationally and cosmetically perfect. No scratches, dents, discoloration etc. To my knowledge, it has never been serviced or had any adulteration done to it. I've owned it for about a year and a half and it has performed flawlessly. Reason for sale is that I am just trying a different amp out. Original box and packaging is available so shipping is not a problem. Ships from 14303
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