dbx Pro Vacuum Tube Microphone Preamplifier 전단

dbx engineers are constantly working to improve the quality of our products. Specifications
are, therefore subject to change without notice.

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:

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

9VAC 1300ma (12 watt typical power consumption)