Anmelderrost DAC fra PrimaLuna, der sikrer dig masser af dynamik, en varm lyd og et detaljeret lydbillede - og til en meget fordelagtig pris. Et must-have produkt!
Dimensions: 378 mm x 280
mm x 190 mm (L x W x H) Weight: 17 kg
“The PrimaLuna Evo 100 is an attractive, well-made DAC with powerful dynamics, oodles of detail, and a warm, enjoyable tone. At its price, it’s a remarkably good value, and is very highly recommended. If I had $3000 to spend on a DAC, the PrimaLuna Evo 100 would be at the top of my short list.”
The Absolute Sound
Introducing the world's first tube-based data
clocking device: the SuperTubeClock™ By incorporating a low-noise
mini-triode vacuum tube into the digital clock, this boldly conceived design
provides vastly superior resolution, detail retrieval, improved clarity,
increased definition and detail from top to bottom.
AC Offset
Killer AC Offset Killer is about goose bumps. The ones you get when
music comes out of a background so quiet, you may say to yourself “Just how is
this possible?” PrimaLuna custom-winds our own massive toroidal power
transformers that are low in hum and EMI. But we wanted more. Our engineers
designed the AC Offset Killer to lower transformer noise to a place no other
manufacturer dreams of going, regardless of how bad your electricity is. The
result? Sense of space. Texture. The resonance of an acoustic guitar or violin
string that seems to trail on forever. The AC Offset Killer will amaze you.
Premium Parts Premium parts including polypropylene
coupling caps, triple pi power supply filters, custom designed isolation
transformers which separate the analog and digital devices, resulting in
decreased signal degradation and improved sonics from top to bottom. Many DACs
weigh in at ten pounds or less. The EVO 100 Tube DAC weighs nearly 29 pounds!
Point To Point Wiring You spend a lot of money on
interconnects. So why have the signal go right from the RCA jacks or speaker
terminals into circuit boards with copper traces so thin you can hardly see
them? What’s high-end about that? PrimaLuna employs Point to Point Wiring on all
products. The entire signal path, including resistors and capacitors, is
painstakingly hand wired with heavy-gauge cable by craftsman.
Dual Mono Topology Per channel dedicated tubes. While it is fine to
use a single tube as a buffer for both channels and claim your DAC is "tube", it
can't be compared to the PrimaLuna design and what it does for the music.
Vacuum Tube Rectified Vacuum tube rectified power supply
incorporates eleven separate power supply regulation circuits. Tube
rectification is synonymous with organic sound, especially when compared to DACs
being known as sounding like "a computer".
USB Digital Input
USB digital input allows using your computer for storage and playback of your
music with all the benefits of features like playlists and easier access to your
whole music library. Rather than just add in an USB input as an afterthought,
PrimaLuna engineers searched endlessly looking for the best-sounding USB
interface we could find. Our USB input converts the jitter-filled USB digital
signal to S/PDIF, dramatically improving the digital signal quality before it
gets to the SuperTubeClock. This USB input is a true high-resolution digital
input.
Our Digital Difference - The SuperTubeClock™
This is where the magic happens... the SuperTubeClock™ replaces the solid state
oscillator normally found in a DAC with a mini triode vacuum tube. By using a
tube, we have significantly lowered the amount of jitter and noise, resulting in
superior detail retrieval. This in turn yields superior detail and dynamics from
top to bottom, and improved overall musicality.
First a note on the tube itself: The tube is a very rugged, long-life Russian
military Triode specifically designed for oscillation purposes... which is its
function here. It is running very conservatively so life expectancy is roughly 5
to 10 years of operating time. The small glass envelope guarantees very low
microphonics.
Triode tubes are inherently low noise devices, and
extremely linear when used properly. This means that the oscillation frequency
wave it produces is very pure and clean. The noise in the sidebands, from 10Hz
to 100kHz on either side of the oscillation frequency, is extremely low. This is
the important spectrum for audio. Everything below and beyond that can be
ignored.
When you reclock the inputs, any noise that is generated here
appears unfiltered and unattenuated at the input of the conversion chip, and
injects jitter, which from then on is an indistinguishable part of the digital
audio stream. No amount of cleaning will ever be able to remove this noise once
it reaches this point; it has become part of the audio signal. This noise
"rides" on the audio signal, so you do not hear it as noise, but as smearing of
notes and masking of detail. There is a distinctive loss of dynamics, tonal
purity, inter-transient silence, and sense of timing. We call this "noise
modulation."
This is why the low noise, especially in the 10Hz-100kHz
sidebands of the oscillator, is so crucial. Again: below and beyond these
frequency extremes is trivial, because it will not affect the audio, and will
not reach the analog outputs.
When the clock is used to clock the DAC
chip, a similar situation occurs as described above: the noise appears at the
location where the digital audio stream is converted to successive steps in a
staircase wave, which represents the analog audio signal. Each step has to be
EXACTLY 1/441000th, 1/96000th, 1/176400th, or 1/192000th. The injected noise
introduces a deviation in time which is the exact replica of that noise. This
means that the audio signal at the outputs of the DAC chip has the noise riding
on it, again as an inherent part of the signal. No amount of filtering will
remove the noise once it reaches this step. Again we experience that smear and
detail masking, with that distinctive loss of dynamics, tonal purity,
inter-transient silence, and sense of timing. Here you see how much sense it
makes to reclock BOTH the inputs AND the DAC chip.
The oscillation
frequency wave a tube produces is a sine wave. That's no good: It has to be
converted to a square wave. This is a very delicate procedure: when the rising
and falling edges of a square wave are not steep enough, there exists a certain
window during which the actual transition of the data bit is not exactly
time-defined. It leaves room to be either too late or too early. This is a
partly random process, and partly dependent on surrounding conditions; such as
power supply voltage variations, ground noise, inherent CMOS or chip crosstalk
in the decoder or DAC chip, etc. All these timing variations are noise, and are
called jitter from various sources. The steeper the edges, the more exactly
defined the transition moment will be, resulting in less noise (jitter). When a
clock produces a very stable frequency with such low jitter, there will be a
more accurate reproduction of the original analog waveform of the music.
Here are a few real SuperTubeClock™ pictures of what it can do: experts will
certainly like them. No other commercial clock on earth will produce a square
wave as this one.
Each square wave seen below is measured on a Philips
PM3295A analog 400MHz oscilloscope using LeCroy 10:1 probes. These probes
attenuate the signal by a factor of 10, in order to not load the device under
test with any load, resistive or capacitive. So the vertical resolution on the
scope image has to be multiplied by 10. For instance when you see ~0.1V, then it
is in reality measuring ~1V(AC).
The SuperTubeClock™ generating a square
wave at 8.4672mHz. The vertical slope is measured at ~500mV (each black
horizontal line represents 500mV counting from top to bottom). The vertical
peak-to-peak travel of the square wave at this frequency is 3.5 Volts, which is
excellent.
Each black vertical line going from left to right represents
10 nanoseconds. The faster a clock can go from peak to peak, the better.
Square waves present themselves more and more like sine waves the higher you go
in frequency. So an 8.4672mHz wave like the one above is still identifiable as a
square wave, but as we approach 42.2mHz, typically a square wave will be almost
fully rounded off and appear as a sine wave. As a square wave begins to round
off, it means the timing of the digital transmissions has become more insecure,
allowing for the introduction of more noise and jitter that is then presented to
the DAC.
Here we see the square wave generated by the SuperTubeClock™ at
42.2mHz. As you can see, the square wave still has a very discernible square
shape. This means the clock is VERY fast, leaving very little time to introduce
jitter and noise which can interfere with sound quality as mentioned above. Look
closely at the image on the left. Each black vertical line running from left to
right represents 5 nanoseconds. The time it takes the slope to go from the top
bar to the bottom takes up roughly 1/3 of that black square, which is about 1.67
nanoseconds.
Think about it.. that's 1.6 BILLIONTHS of a second. Each
black horizontal line in this measurement represent ~1V from top to bottom. Just
as in the first wave above, the peak-to-peak travel at 42.2mHz is about 3.6
Volts, which again is excellent.
This kind of speed is crucial to ensure
accuracy in detail retrieval. This in turn introduces less noise and jitter,
resulting in better transients, increased clarity, improved dynamics, and a
pure, musical tonality.
Specifikationer
Specifikationer
Kort beskrivelse
Anmelderrost DAC fra PrimaLuna, der sikrer dig masser af dynamik, en varm lyd og et detaljeret lydbillede - og til en meget fordelagtig pris. Et must-have produkt!
Vægt
17.00
Dimensioner (HxBxD)
378 x 280 x 190 mm
Leveringstid
2-4 dage (på lager)
Type
DAC - D/A-konverter
Rørbestykning
2 x 12AX7, 2 x 12AU7, 2 x 5AR4
Frekvensområde
20-40kHz (±0.5dB,Fs=192kHz)
Signal/støjforhold
≥90dB (20-20kHz)
D/A-konverter
32-bit / 192 kHz / DSD128
Input
USB, AES/EBU, Coax, Optical
Output
Stereo RCA
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