Product Review

ONIX CD-3 CD Player

Part III

May, 2007

John E. Johnson, Jr.


On the Bench

I used the Philips SACD test disc, which has test tones and sweeps. The same test tones are recorded on a second layer for CD players. The left channel RCA unbalanced output was utilized for measuring the signals. I calibrated the analysis software using a 1 kHz sine wave, recorded at 0 dB on a separate disc, such that the peak registered at 0 dB on the graph. The SMPTE/DIN test signal was at - 9 dB, while the others were at - 3 dB. I recorded results with  the 24/96 upsampling turned off, then with it turned on, to compare the effects of the upsampling.

Using 60 Hz and 7 kHz, IMD came in at less than 0.003%. Notice that the noise floor is lower with upsampling turned on, although there is no effect on the IMD itself.

At 1 kHz, THD+N is less than 0.002%. It is a bit higher with upsampling turned on.

At 10 kHz, on the other hand, upsampling not only lowered the noise floor, it reduced the THD+N.

Click Here to Go to Part IV.

Copyright 2007 Secrets of Home Theater & High Fidelity

Go to Table of Contents for this Issue.

Go to Home Page.


About Secrets


Terms and Conditions of Use

Our Vault pages may have some display quirks. Let us know if we need to take a look at this page or fix a bug.
Connect with us
  • Instagram
  • Google+
  • YouTube
  • LinkedIn
  • Pinterest
Secrets "Cave"