Bar raising numbers for the Zapco HDSP-V
The HDSP-V is the best hardware that Zapco has ever built, and the numbers attest to that. Although
the HDSP is composed of 18 individual pieces (HDSP-Z16V) put together in a modular version that is
easy to adapt or update according to your needs, the background noise and the crosstalk numbers are
superb. The end result surpassed even the expectations of the designers and engineers who built it.
The numbers are the proof of the design, for example
-140 dB of background noise
and
-115 dB of
crosstalk
. For a 16-channel device, crosstalk at -115 dB (average around 1 KHz) is proof of the accuracy
with which the layout was made. The digital inputs have 114 dB of A weighted signal/noise and the
analog inputs have 109 dB at rated output. We kept the output voltage at 4 Volts to avoid added
distortion of analog preamplification. Distortion of analog and digital inputs are lower than 0.001% at
4 Volt output and lower than 0.00175% at 1 Volt output. The HDSP-V power supply continues to work
down to 6 Volts to solve the problem of cars that have the stop-start ignition system.
The main processor is a dual core 456 + 456 MHz, 8 and16 channels solution have a 192 and 96 KHz
sampling rate and the converters are new 32 bit/784 KHz devices from AKM. Very importantly, it is an
HD Player that works at 24 bit/192 KHz integrated with DSP. There is no connection between the Player
and the DSP, no PCB, no connectors, no cables. Player and DSP are integrated in one dual core chipset
that has a total power of 912 MHz. Then there is a microprocessor that controls only the Player and does
not have to do other heavy computational work like can happen, for example, with a computer. The
player has a dedicated browser that starts to work immediately when you insert the USB memory stick.
It can read all formats up to 24 bit/192 KHz, compressed or not compressed, and from the 3” touch
screen display, you can control all the functions using 3 different levels of folders. The dash board that
controls the Player also controls minor DSP functions and can manage up to 10 tuning presets with
instantaneous switching of one to another for A/B comparison.
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