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USB 1389 - 1390 - 1391 - 1392
Class-AB Power amplifiers
SPECIFICATIONS
WARRANTY
US BLA
STER Inc. w
arr
ants all products not to ex
ceed ONE YEAR* from the date of original purchase
which installed by an authorized US BLASTER dealer. Units that are not installed by an authorized US
BLA
STER dealer maitain a w
arr
ant
y not to ex
ceed 90 da
ys from the original purchase date. Product
that displa
ys abuse such as power deficiency
, o
v
er driving the amplifier or clipping the input is requi-
red to purchase a new PCB for replacement. US BLASTER obligates to repair or replace base on its
own sole option for defectiv
e products. This w
arr
ant
y does not fit for equipment that has been dama
-
ged by accidents, negligence or misapplication or has been altered or modified in an
yw
ay. This war-
ranty applies only to the original purchaser who registers the product properly within 10 days after
purchase. Ex
cept as pro
vided herein, US BLA
STER makes no warranties or representations, express
or implied, including an
y w
arr
anty implied by law, whether for merchantability or fitness for a parti-
cular purpose.
DUE TO CONSTANT IMPROVEMENT, PRICES AND SPECIFICATIONS
ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTIFICATION.
© US Blaster Europe BV
MODEL
4Ohm RMS power at 14.4V
2Ohm Load RMS power at 14.4V
4
Ohm Bridged RMS power at 14.4V
Input Level
High Level Input
Two Channel Input mode
CH-A filter mode
CH-B filter mode
CH-A LPF
C
H-A HPF
CH-B LPF
CH-B HPF
Frequency Response
THD at 4Ohm load - 30% Rated Power
S/N Ratio
Channel Seper
ation
Minimum Load
Overload protect System
Overheat protect temperature
Hi-END Design
Components & PCB
Dimensions
USB 1389
160 Watt
190 Watt
3
50 Watt
0.2~5V
NA
YES
HP-FULL-LP
HP-FULL-LP
50~500 Hz
5
0~500 Hz
50~500 Hz
50~500 Hz
10Hz~25 KHz
<0.02%
>90 dB
>89 dB
2 Ohm
YES
80 ºC / 176 ºF
YES
SMT & Double side board
318 x 244 x 53 mm
USB 1390
160 Watt
190 Watt
3
50 Watt
0.2~5V
NA
YES
HP-FULL-LP
HP-FULL-LP
50~500 Hz
5
0~500 Hz
NA
NA
10Hz~25 KHz
<0.02%
>90 dB
>89 dB
2 Ohm
YES
80 ºC / 176 ºF
YES
SMT & Double side board
215 x 244 x 53 mm
USB 1391
90 Watt
110 Watt
1
80 Watt
0.2~5V
NA
YES
HP-FULL-LP
HP-FULL-LP
50~500 Hz
5
0~500 Hz
50~500 Hz
50~500 Hz
10Hz~25 KHz
<0.05%
>90 dB
>89 dB
2 Ohm
YES
80 ºC / 176 ºF
YES
SMT & Double side board
263 x 244 x 53 mm
USB 1392
90 Watt
110 Watt
1
80 Watt
0.2~5V
NA
NA
HP-FULL-LP
NA
50~500 Hz
5
0~500 Hz
NA
NA
10Hz~25 KHz
<0.05%
>90 dB
>89 dB
2 Ohm
YES
80 ºC / 176 ºF
NA
SMT & Double side board
183 x 244 x 53 mm
8


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