(Right channel dashed, 0.5dB/vertical div.)įor continuity with my existing library of CD player measurements, I looked at the spectrum of the DX-7555's output while it played back a dithered 1kHz tone at –90dBFS, using the AP System One to sweep a 1/3-octave bandpass filter from a center frequency of 20kHz to 20Hz. Channel separation (not shown) was superb at >110dB in the midrange and was still an excellent 83dB at 20kHz.įig.1 Onkyo DX-7555, frequency response into 100k ohms with normal data and filter set to 'Sharp' (top), set to 'Slow' (middle at 20kHz), and with pre-emphasized data set to 'Sharp' (bottom). With the filter set to 'Slow,' the output dropped rapidly above 15kHz (fig.1, middle traces). With pre-emphasized data (fig.1, bottom traces), the droop began a little lower in frequency. With the filter set to 'Sharp,' the Onkyo's frequency response was flat within most of the audioband, with a slight top-octave droop to –0.25dB at 20kHz (fig.1, top pair of traces). Its output impedance was a moderately low 411 ohms at high and middle frequencies, rising inconsequentially to 426 ohms at 20Hz both figures are close to the specified 470 ohms. The Onkyo's maximum output level at 1kHz was 2.06V, close to the CD standard's 2V, and it preserved absolute polarity ie, was non-inverting. The DX-7555 offered excellent error correction, producing no audible glitches in its output until the Pierre Verany Test CD's track 32, the data spiral of which includes 1mm gaps. It may not be that very warm in vocal ( as I may use a tube buffer to achieve, I guess ) but when I put many CD's which I previously judged as muddy recordings turn out to be good and organised recordings.To measure the Onkyo DX-7555, I used the magazine's older Audio Precision System One and a brand-new Audio Precision System SYS2722 kindly loaned by AP (see ' As We See It' and Audio Precision's website), as well as the Miller Audio Research Jitter Analyzer.

The solid tank like construction and the fast read laser head condition give me confidence to use this 7711 happily and trustfully for a long period to come though after its previous 13 years of work It is simply a new league in outstanding sound quality from the same CD ! I am re-hearing all my hundreds of CD collections It may not be that very warm in vocal ( as I may use a tube buffer to achieve, I guess ) but when I put many CD's which I previously judged as muddy recordings turn out to be good and organised recordings. Its smooth treble and base thrust bursts out from my Tannoy concentric floorstanding speakers is comparable, if not better than, with my previous owned Kato Kogei stylus cartridge. I am very happy the wide & deep sound stageDX-7711 is revealing to prove the DAC is very highend.

I hear mainly classical especially large orchestral works. I am returning to 2.0 Stereo after the HT heat for the last few years. I got an Onkyo Integra DX-7711 from yahoo bid at US$120 last month.

Onkyo cd player dx-714