Until now the players were used as integrated players, with their built-in dacs and analog outputs. Comparing them to reference equipment this way is unfair but still the CD880, 960 and CD94MKII were able to produce excellent results. But what would happen if you only use them as transports, taking the digital signal coaxially into the reference dacs?
CD304MKII, CD880, CD960 and CD94MKII as a transport
Naturally I used all players that are equipped with a digital output as a transport in combination with all available DACs. And as it turns out, all CDM1 equipped players have a similar recognisable character although they definitely don't all sound alike. What's more: the differences are so large indeed that you can easily distinguish them in a blind test. How can this be? Well, partially this is probably because of differences in how the servo is incorporated (CDM1 was issued with at least three different servo boards). Also, the power supply has a large influence, even though the transformers themselves are very similar, still the remainder of the power supply (rectification, filtering, regulation etc) differs from player to player. Lastly, the state of the player also has to be taken into account as some of these players are over 20 years old now. Still, there are definite similarities and patterns to be discovered but more on that more below.
All CDM1 transports (CDM1mkII too) sound alike in the way that they all present a super-fluid, almost creamy sound with utterly silky treble. While displaying all these attributes, some players sounded more dynamic and thinner while others sounded more harmonically ripe and full-colour.
The CD304MKII (CDM1) portrayed the same character no matter the connection method: analog or digital. It has most drive and slam of all players here but is also most rough around the edges. Its sound can be ragged, the treble a little coarse and lacking refinement. Also it has less transparency than the other players in this test. As a transport I even found these aspects to grow worse than when using it as an integrated player with its analog outputs.
CD94MKII, CD880 and CD960 all sound very nice as a transport, with the 880 being most airy and refined but lacking real power, fulness and slam. The 880 has similar qualities when used analog or digitally, but it is most relaxed and ethereal when using its built in dac. When used as a transport it turns into the second best transport I have heard with very fine slam and dynamics while remaining utterly fluid and refined. The 960 sounds a lot like the CD94MKII on the aspects of colour and bass fullness but the 960 is more mellow and relaxed and can sometimes be too much zen. Also, it lacks the 94MKI's low level resolution, especially when used with its analog outputs. When used as a transport, the 960 is fine, but I'd rate it below the 880. Sure, it shows the 880 a thing or two about harmonic ripeness but it's just not that engaging except for cd's that are supposed to sound very smooth. The CD94MKII is my reference when used as a transport. Used this way it is so exceptionally good that only the CEC TL1x belt-driven cd transport could beat it. But not by a large margin! The CD94MKII's digital output doesn't overly shout: "I'm a CDM1 transport" but instead shows massive dynamic behaviour and excellent timing, in addition to the usual CDM1 strengths such as treble fluidity and overall musicality. Used with its analog outputs, the CD94MKII reverts to the familiar TDA1541 sound, which is smooth, creamy, relaxed, mellow, slightly vague'n blurry... but still the best of this group and highly emotionally enjoyable!
The players were combined with all dacs that were present but turned out to work best with the DCS equipment
The combination with the Audiomeca dac wasn't the best one: technically the match was excellent, but emotionally I felt it was undercut when compared to the combination with the DCS stack. This is the unpredictable nature of audio. Sometimes a match works out; sometimes not. In case of the Audiomeca I believe that it is more than average sensible to jitter. While the Audiomeca showed excellent dynamics and slam when combined with any of the CDM1 transports, the DCS combo managed to sound more coherent and much more nuanced. It didn't really rock but emotionally it worked better than with Audiomeca. There was a kind of synergy going on that highlighted the CDM1's inherent qualities. The DCS combo did nothing to help the slightly lacking dynamics and drive of some of the players but added to the fluidity, creamyness, gentle smoothness to create an altogether almost analog sound that reminded me of listening to lp. This was a very well-mannered sound. Very civilised and un-digital. But also lacking a little in character, but that's attributable to the DCS as it turned out later when I decided to swap them for Mark Levinson. But that's a whole different story for another article. This slight lack of character, by the way, wasn't present when the players were used with their built in dacs, on the contrary! But then you miss out on transparency, resolution etc.
After this I rushed to see what the Audiomeca Mephisto II transport could add to this, instead of the CD880, CD960 and CD94MKII
Well, that was a disappointment really. Even though the Mephisto II is supposed to be at the pinnacle of cd drive technology and indeed, technically, it was superior, with much better slam and drive, somehow it was less fluid, less, glowing, less open and airy in the treble and sounded just... uninspiring! The unforced and utterly natural, all flowing CDM1 presentation had been treded for a completely boxed-in and boring presentation. How could this be? It happens more often that one aspect of sound discludes another. For example: extreme fluidity prevents ultimate dynamics, and vice versa. Of course there are exceptions but very often it is true. The only instance where the Audiomeca improved upon the various Philipses and Marantzes was when playing rock music or music that is very flat dynamically and its basically rhythm-driven. But when it comes to harmonic rightness, there is no beating the CDM1. The Audiomeca transport on the other hand sounded very nice when combined with its stablemate the Enkianthus dac. Why? Synergy? Less susceptibility to jitter? Who knows.
Naturally the DCS equipment squeezes out more resolution and transparency, better layering and such, but still, the CD880, CD960 en CD94MKII never disappoint and in fact, sometimes manage to evoke more emotion than the DCS combo. The DCS combo is technically superior but somehow is less accomplished at conveying emotion than these old Philips and Marantz players.