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Sound Quality
Generally speaking the ZMF Eikon has a smooth, warm sound overall. Bass is slightly emphasized and well extended. I wouldn't say the bass bleeds into the mids so much as there is just an overall mild warm tilt on this headphone overall making them a relaxed listen. Bass has a slightly gruff distorted sound and doesn't hit quite as hard as the best headphones, but remains a solid performer and a pleasant listening experience. Response bass through mids is quite even, though the presence region is a little more relaxed than the rest of the spectrum giving the headphones a…
Click on graphs image to download .pdf for closer inspection.
Raw frequency response plots show mild changes in level with movement, but very little change in tonality. Raw frequency response is essentially linear with a warm tilt to the notch at 16kHz. The neutral target would have it gently rising from 600Hz to 1.5kHz. The concha peak at 3-4kHz is about the right height and frequency, subsequent response about right on average, but quite rough. In listening, the peak at 6kHz seemed to annoy only occasionally, but the notch from 7-9kHz did seem to reliably remove some…
Altec A-7
A highly efficient horn-loaded system for use in large to very large listening rooms (at least 15' from the listening area), or for very high-volume "Row-A" listening. Excellent woofer-tweeter blending, moderately deep (useful 45Hz limit in most rooms) and very taut, well-defined low end. Highs smooth and slightly soft, yielding most natural high-end quality…
No, getting good sound out of this baby requires a major-…
But back to the M14's creamy, rich palette: cymbals, bells, celeste, harpsichords, snare drums, and other instruments with sharp percussive edges came through with their initial transients intact, but with a rounded, sculpted aftertaste that extended…
Turntables: VPI TNT Mk.3, Rega Planar 9, Clearaudio Reference.
Tonearms: Souther TQ-1, Immedia RPM-2, Graham 2.0.
Phono Cartridges: Transfiguration Temper, Lyra Parnassus D.C., AudioQuest 7000 Fe-5, Clearaudio Accurate (gold coils), Rega Exact, Grado Reference.
Preamplifier: Audible Illusions Modulus 3A.
Power Amplifiers: VTL Signature 175, Muse 160, Adcom 5802.
Loudspeakers: Audio Physic Virgo, Aerial Model 8; Audio Physic Terra subwoofer.
Cables: Yamamura Millennium 6000 and Quantum AC. Discovery Plus Four, Precision Interface…
While the Plinius 14 has both low- and high-gain settings, the low-gain setting is really too high for most moving-magnet cartridges, and appears instead designed for medium-gain moving-coils. Unless otherwise noted, the results are for the high-gain setting with unbalanced outputs.
The Plinius 14's output impedance was 170 ohms (right channel; slightly lower, at 163 ohms, in the left). At its balanced outputs, the output impedance measured 354 ohms. Its input impedance measured 47k ohms (L) and 45.6k ohms (R) at the 47k ohm setting of the input impedance…