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- Dec 18, 2007
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As always, thanks for the kind input.The new portable SR-71b does indeed expand on the soundstage even further, and power is noticeably higher. It's possible to drive my Protector into distorting at high volumes much more easily than the new SR-71b balanced portable, which could play full size phones insanely loud without distortion. Yet it also got along well with my very sensitive Westone ES5, both in terms of gain and sound.
I am guessing from the PCB size that it will be about 1/2" wider and deeper than the Protector (maybe 2/3" wider), so not a lot bigger; but if size is important the Protector might still be a better idea. If I had to pick based on sound I'd pick the new balanced amp, but if I had to pick based on size to mate with my 8Gb Nano 3G with LOD and lossless music then the Protector is a better size match.
I really thought it was a good match sonically with the LCD-2 and balanced silver dragon cable. I'm assuming that not only can one buy an adapter to mate it with a small balanced DAC like the Neko D100, Lavry DA10/11 or Apogee mini-DAC, but that one could easily adapt the iBasso balanced portable DAC (boomslang) to work with it. However, even with an iPod LOD as source the SR-71b exceeded the Protector by a small degree with my ES5 custom IEM.