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In Reply to: RE: high performance = higher-quality signal transfer = better SQ posted by AbeCollins on April 27, 2025 at 19:33:49
I have both Cambridge CXC V2 and Tascam CD-200. Here are my observations:
1. Optical Toslink sounds OK. But just OK. Don't expect any magic.
2. Coax sounds pretty bad. No resolution. Also distortion which I can't listen for longer time.That is why I put both into storage for more than several years.
After mod:
1. Tascam CD-200. I got the resolution I want. But I need warmth and bass. I know I get the SPDIF polarity reversed. I will try the other way to see if I can get warmth and bass.
2. Cambridge CXC. I got resolution, warmth and bass. However the output is lower than I expected.After mod, in both cases, the distortion is gone.
This is not a fool at all.
Edits: 04/27/25 04/27/25
...so yes, your "High Performance mod" should sound better.I'm specifically commenting on your Cambridge which shows the stock SPDIF output level significantly lower than the SPDIF spec calls for. You can plainly see the very low amplitude in your own scope images. Not rocket science or my opinion. I calls 'em as I sees 'em ;-)
Whatever SPDIF repair / mod you performed on the Cambridge SHOULD sound better than the stock output which was essentially broken.
Good luck.
Edits: 04/27/25 04/27/25
I am pretty happy with the result of Cambridge CXC except the digital output is lower than my calculation.
Please note, I have Linn LP12 turntable setup. My CD play is no worst than turntable which means a lot.
Sometimes, music can bring you to tears.
...in more ways than one ;-)"Sometimes, music can bring you to tears. "
I've had various gear over the years. Some that were Class A Recommended brought me to tears after emptying my wallet. It wasn't due to SQ.
P.S. Nice Siglent scope BTW. I have an oldie Tektronix.
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Edits: 04/27/25 04/27/25 04/27/25
@AbeCollins
@13th Duke of WymbourneHere are the problems of Cambridge CXC I try to fix:
1. No output isolation transformer.
2. Poor driving capability.
3. Not true 75ohm.I measured the rising edge.
1. Mine is 32ns
2. Cambridge 38ns
3. Tascam 60nsThe slower rising edge, the worse jitter.
Edits: 04/28/25
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