M2tech, Front panel – M2TECH Evo Dac User Manual
Page 6
E
vo
DAC
HIGH PERFORMANCE 192/32 DAC
REVISION P
r
A – SEPTEMBER 2011
Copyright © 2011, M2Tech Srl
6
M2Tech
www.m2tech.biz
2. Front Panel
M2TECH
E
DAC
VO
192 H /32bit I S digital to analog converter
k z
2
44.1
DC IN
9V
DC
X1
MADE IN ITALY
X2
48
X4
FS
INPUT
OPT
COA X
I S
2
1
2
3
4
5
6
7
Figure 1
1) Supply input. Apply 9V
DC
from the wall adaptor provided in the package of from an
E
vo
S
UPPLY. Another power supply may be used if necessary, but user must be aware that
in this case the warranty is void. Tip is positive, ring is negative. A minimum current of
500mA is necessary. This input is protected against polarity inversion.
2) Input switch. Allows for selection of the input: coaxial S/PDIF (left), optical Toslink
TM
(center), I
2
S (right).
3) Power indicator. Turns on when the stock wall adaptor or the
E
vo
S
UPPLY are
connected to the
E
vo
DAC
.
4-5) Base sampling frequency indicators. The sampling frequencies of all music files
can be grouped in two categories: those which are multiples of 44.1kHz (that is: 44.1kHz
itself, 88.2kHz and 176.4kHz) and those which are multiples of 48kHz (that is: 48kHz itself,
96kHz and 192kHz). When the
E
vo
DAC
is not locking any incoming signal, then both
indicators will be off. When the
E
vo
DAC
is locking a signal which sampling frequency is
from the first group, then indicator 4 will lit. When the
E
vo
DAC
is locking a signal which
sampling frequency is from the second group, then indicator 5 will lit.
6-7) Sampling frequency multiple indicator. Together with indicators 4 and 5, these two
indicators display the incoming signal’s sampling frequency. When indicator 6 lits, then the
base sampling frequency displayed by indicators 4 and 5 must be multiplied by “1”. When
indicator 7 lits, then the base sampling frequency displayed by indicators 4 and 5 must be
multiplied by “2”. When both indicators 6 and 7 lit, then the base sampling frequency
displayed by indicators 4 and 5 must be multiplied by “4”. Some examples follow:
a) 44.1 kHz: indicators 4 and 6 lit (base is 44.1, multiple is “x1”);
b) 96kHz: indicators 5 and 7 lit (base is 48, multiple is “x2”);
c) 192kHz: indicators 5, 6 and 7 lit (base is 48, multiple is “x4”);