FET Audio | Hi-End Audio & Electronics DIY Electronics & Repair

Got 4 of these real cheap!

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Got this B-stock only US$400 cheap from Harman on-line shop.  Sound great for this amp!  125W x 8 channels.  Good for 7.1, bi-amp, tri-amp use for home theatre or home audio etc…

No fan and this is really high tech!  1000W for a 1U box!  This amp is good for studio use for quiet operation.  Only issue is that it has no network connection and cannot bridge the output channels.

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The USB interface only use USB power to work!  AKM DAC and good OPA op-amp.  Xmos DSP for USB interface.  Sound better than Lexicon IO22 to me.  I use a Presonus R65 and it sounds very good for a recording system under window.

The ID input use a Jfet J112 from Fairchild.  The output use two pairs of  BC327 and BC337 to drive the output.

Its bigger brother ID14 and ID22 use burr brown ADDAC but this little brother only use the AKM parts.  Cheap and good for this price point USB interface.

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This USB interface has two mic input, two analogy output and one headphone out.  The master volume is big and easy to control.  The case is die cast and special design for this model.  The case is warm when using due to the internal DC converter inductors heating up a lot!  PCB design is good but I do not like the layout.  All the analogy is on one board and the USB interface and DSP is on other board and only link by a flex cable between them for all the analogy signal.  Thus the distance of signal travel is quite long and easy pick up noise.  Overall sound is ok but not the best USB interface I own.

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