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Hello all, I'm hoping someone can advise me on this - I need to make a decision soon whether I need to return the DAC! I have been using a Linn Magik DS and occassionally a Benchmark DAC1 USB for quite a few years with no problems. Today, I received my new Bel Canto DAC 2.7. It's fantastic with all resolutions up to 24/96, but whenever I play a piece at 24/192, there is a quite loud crackling sound along with the music. I have tried connections from my Moon MiND 180, Linn Majik DS and Samsung NC10 netbook (for USB), running Lubuntu with Minimserver. Different sources generate similar errors as follows, and only the USB from the netbook, and the SPDIF from the Linn Majik are capable of playing 24/192 without problems. Could this be simply impedance matching with some cables or does this sound like a genuine problem with the DAC? None of the SPDIF RCA cables or the AES are proper digital cables, but ironically, an old analogue XLR cable comes closest to working for the AES connection, though there is still some crackling at a much lower level with that one. As I mentioned, everything else up to 24/96 works perfectly, and the Majik DS and Benchmark DAC1 USB never gave me any problem like this. Any help is greatly appreciated. As a summary:- CRACKLE WITH 24/192 audio Moon MiND 180 > AES Moon MiND 180 > SPDIF Moon MiND 180 > TOSLINK NO CRACKLE WITH 24/192 audio Samsung NC10 Netbook > USB Linn Majik DS > SPDIF LOSS OF SIGNAL Linn Majik DS > TOSLINK Many of the connections which produce crackle, also generate an 'LOS' message - Loss Of Signal. I'm wondering if the Bel Canto is just especially fussy about cable matching. with thanks, Frank