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RE: Kenwood DP7090 or Sony CDP XA30 ES ??

Posted by Thorsten (M) on June 28, 2014 at 20:47:32

In Reply to: Kenwood DP7090 or Sony CDP XA30 ES ?? posted by KanedaK on June 27, 2014 at 06:35:29:

Hi,

Both machines are fairly recent vintage, meaning their laser / drive systems are nothing like those of older machines, be they top-line Kenwood or Sony. So expect unreliability and disk read issues.

The Kenwood uses old Multibit Chipsets (the Burr Brown PCM1702) and 8 pcs at that. It is a massive effort on the digital side, but hampered by sub-ideal analogue design. It may be a good choice to modify with something like LC-Audio's Zapfilter and then can provide balanced outs into the bargain. The stock version I found unimpressive back then, compared to others I had at hand.

The Sony uses a later Sony Delta Sigma Chipset, has the same design issues of the Kenwood of bad analogue stages. I found the drive system intriguing at the time, sonics were pretty blah for the whole range Sony had then.

You need to go further back in my view, or sideways. Either look for CDP's or DAC's with TDA1541, PCM56, PCM63, AD1856, AD1862 or AD1865 or get something more modern.

For example, Lite Audio (aka Monarchy OEM) still offer DAC's on e-bay that use the same Burr Brown Multibit DAC (well, the 24 Bit version) as was used on the Kenwood, with simple tube circuitry after the DAC. These may be a better choice, with any suitable transport.

Thor

At 20 bits, you are on the verge of dynamic range covering fly-farts-at-20-feet to intolerable pain. Really, what more could we need?

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