DAC & High Power Digital preamplifier & Headphone Amplifier
ZeroUno
DAC-HPA
Operating Instructions
®
ZeroUno
DAC-HPA
page 8
Technical data
The circuit of the
ZeroUno
DAC-HPA
is based on the ESS SABRE
32
ES9018S DAC chip plus a proprietary hybrid filter design and
encapsulation against external noises.
For optimum performance the SABRE chip runs on a proprietary implementation of special developed firmware
One motherboard is based on a four-layer PCB with extra thick copper traces to achieve ultra-short signal paths with minimal
wiring to avoid electromagnetic induction of noise and to insure perfect grounding
Discrete power supplies built for the digital and the analogue sections using six toroidal transformers - the last generation of
ultra-low noise rectifier diodes and high quality – low noise regulators
Audio-grade resistors and capacitors
Comprehensive noise regulation for all digital circuits
Jitter free operation by patented high performance algorithm
Integrated 32 bits volume control with a residual noise below -130dB for the best performances even at very low output levels
On board output level setup to match different sensitivity levels of the direct connects power amplifies
Voltage-compensated, ultra-low phase noise and low jitter crystal oscillators (clock) acts as master clock
Two separated clocks for sampling families of 44.1, 88.2, 176.4, 352.8 kHz and 48, 96, 192, 384 kHz
DAC output stage with the shortest possible signal path based on custom made amorphous audio transformers produced by
Lundahl, with first order discrete analogue filter for the best THD and digital noise suppression
True Class A discrete built analog output stage with zero negative global feedback
Separately powered USB chip by a “quasi battery power supply” to avoid any distortion induced by the connected computer
(no connection to the +5V powerline of the USB cable)
USB input based on XMOS xCore audio chip with bit perfect transfer for 16bit, 24bit or 32bit data in PCM format up to 384
kHz, including support for native DSD/DoP and MQA.
4 Digital-Inputs: 1x USB 2.0; 1x true S/PDIF 75 Ohm BNC or true AES/EBU 110Ohm XLR; 1x S/PDIF RCA; 1x S/PDIF optical
USB input compatible with following audio formats via PC and MAC:
-
PCM: 44.1; 48; 88.2; 96; 176.4; 192; 352.8 and 384 kHz up to 32 bits
-
DSD (DoP): 2.822 MHz / DSD64, 3.072 MHz, 5.644 MHz / DSD128
-
MQA all formats
SPDIF inputs (AES/EBU, BNC, RCA) compatible with PCM signals from 44.1, 48, 88.2, 96, 176.4 and 192 kHz, up to 24 bits. The
optical input accepts music files with a resolution up to 24/96 kHz
LCD Display with variable brightness and letter size for better reading from listening position
Infrared remote control with direct function keys for volume, balance, absolute polarity, mute and input channel
No drivers required for LINUX or MAC OSx
USB Audio 2.0 driver available for Windows XP/Vista/7/8/10
Gain = 26dB (x20);
Zout < 1 ohm;
Vo max = ±17V (24dBu)
Pre-gain between 0dB to +24dB in step of 1dB
Pout = 2.5Wrms onto 30ohm
Headphone load within 30 to 600 ohm
Power amplifier input impedance ≥ 600ohm
Distortion with 1KHz, 1Vrms, into 30ohm load: 2nd harmonic below -102db; 3rd harmonic below -100dB
4th harmonic below -125dB; 5th harmonic below -120dB
The Specifications in this document are subject to change without notice.
®
Canever Ing. Mario Panfilo Castaldi 6 30020 Noventa di Piave Venice - Italy
ph.
+39 335 708 2 807
web
www.canever.eu
Copyright © 2015-2019 Canever Ing. Mario - All rights reserved
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2
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sec
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to
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EXIT&STORE
SETUP:Use
.
front
.
LED
......
YES
Display example
STATUS LED
RED
non MQA (Master Quality Authenticated) track is playing
BLUE
MQA studio track is playing
GREEN MQA track is playing
Turn the volume knob to choose, if you want to turn on the
STATUS LED at all.
After 10 seconds without interaction at the right knob
,
the display returns to normal
operation and the parameter is stored.
The countdown on the first row helps to control the time left.
N
A
M
E
6
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sec
.
to
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EXIT&STORE
SETUP:NAME
.
4USB
......
STREAMER
Display example
RENAME of INPUTS
Turn the volume knob to change the NAME of an specific INPUT.
The following names are available: USB, OPTIC, AES/EBU,
SPDIF, STREAMER, PC, CD, DVD, SAT, DAT and MD.
ISPLAY
After 10 seconds without interaction at the right knob
,
the display returns to normal
operation and the parameter is stored.
The countdown on the first row helps to control the time left.
