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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
customer@dbxpro.com
http://www.dbxpro.com
A Harman International Company
Microphone Input
Connector: Female XLR Pin 2 Hot
Type: Electronically balanced/unbalanced
Impedance: 2kΩ
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 150Ω 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 600Ω, unbalanced 300Ω
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)