Pasithea, the personification of relaxation and meditation.
It is fair to say that in our latest design this has been achieved. A new dac
above the Morpheus, with better specifications and more versatile. But above
all, a soundscape as if it had come directly from the recording engineer's
mixing console, without any degradation. There are few words to describe a
product that does its work so neutrally. This is the Pasithea in a nutshell
Because of the enormously energy-efficient electronics,
there was room to add even more high-end technology within the dimensions of
our standard enclosure.. Eight dacs were used to take various specifications to
greater heights. Linearity, lower distortion , even at extremely low levels and
a noise floor 10 dB lower than the Morpheus. The eight SDA-3 modules developed
for this design collectively have a very low output impedance so that any load
can be driven. Flexibility has also been increased and inputs such as I2S and
USB are standard without having to swap modules.
To control very sensitive electronics, it is possible from
the menu to attenuate the signal by 10dB, in addition to the physical
attenuator which also realizes a 10 dB attenuation as well. And all this with a
extremely low impedance (XLR output) so that any amplifier with whatever
sensitivity can be driven.
Special attention to linearity. In addition to the fact that
a dac should have no errors so that the data in the digital domain matches the
value in the analog domain, noise plays another important factor here. If the
noise is low it will be possible to make the last steps visible so that
there is a real 24 bit performance.
The linearity plot below was made on the Pasithea. These low
noise figures allow a better dynamic range to be obtained and it should be
clear via measurements if the last bits become visible. The linearity plot is
set to a range of -160 dB. If the dac module is capable as a result of its low
noise and high linearity, then the first bits should show up as stair steps.
The more bits involved the smaller the steps become until they are no longer
visible and the plot changes to a straight line.
Balanced Non oversampling DAC
Four SDA-3dac modules per channel in differential mode
Power supply 30VA 110/115V AC 220/230V AC 60/50Hz. Power required max 16
Input 1x optical, 1x coaxial and 1x AES/EBU, 1x I2S and 1x USB input.
Output 1x stereo pair single ended 2 Volts RMS. In -10dB mode 0.66 Volts
Output 1x stereo pair XLR balanced 4 Volts RMS In -10dB mode 1.33 Volts RMS
Frequency Response 44.1 kHz sampling 1Hz – 20 khz -1dB
Frequency Response 192 kHz sampling 1Hz – 65 kHz – 3dB and 384kHz (USB)
Distortion 0.001% THD
Channel separation 125dB
Noise Floor -160 dB related to 4 Volt RMS
Output impedance RCA 100 Ohm, XLR 16 Ohms, Physical -10dB setting 8 Ohms
Sampling rate Optical 44.1 – 96 kHz
Sampling rate Coax and AES/EBU: 44.1 -192 kHz
Sampling rate USB 44.1 – 384kHz (windows)
Aluminum six button remote control included.
Dimensions 290 x 250 x 60 mm