Vacuum Tube Microphone Preamplifier
Mini-Pre
dbx engineers are constantly working to improve the quality of our products. Specifications
are, therefore subject to change without notice.
FOR MORE INFORMATION CONTACT:
dbx Professional Products
8760 S. Sandy Pkwy.
Sandy, Utah 84070
Phone (801) 568-7660
Fax (801) 568-7662
http://www.dbxpro.com
A Harman International Company
Microphone Input
Connector:
Female XLR Pin 2 Hot
Type:
Electronically balanced/unbalanced
Impedance:
2k
Ω
Maximum Input Level:
-10 dBu or +10 dBu with 20 dB pad engaged
CMRR:
Typically >80dB at 1kHz
Equivalent Input Noise:
Typically -125 typical dBu with a 150
Ω
source load “A-
weighted”
Line Input
Connector:
TS 1/4" Jack
Type:
Electronically unbalanced
Impedance:
>1 meg
Ω
Maximum Input Level:
0 dBu or +20dBu with 20dB pad engaged
Gain
26dB to 60dB
Outputs
Connector:
Male XLR Pin 2 Hot and impedance balanced TRS 1/4"
Type:
Balanced/unbalanced
Impedance:
Balanced 600
Ω
, unbalanced 300
Ω
Maximum Output Level:
(XLR) > +27dBu; (1/4”) > +21dBu
System Performance
Gain Control Range:
+26dB to +60dB for Mic Input
+16dB to +50dB for Line and Instrument Inputs
Output Level Control Range
-
∞
to +10dB
Phantom Power:
+48V
PAD:
20dB pad
PHASE:
Reverses pins 2 and 3 of the output XLR
Frequency Response:
10Hz to 45kHz (-3dB points)
THD+Noise:
0.08% typical at -10dBu out, 1kHz, 30 dB gain
“A-weighted”
Power Supply
Operating Voltage:
JA: 100VAC
50/60Hz
DO: 120VAC
60Hz,
EU:
230VAC 50/60 Hz
Power Requirements:
9VAC 1300ma (12 watt typical power consumption)
