Proel DB1P Single-channel Passive DI Box, 10 Hz to 100 kHz Frequency Response

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About Proel DB1P

The Proel DB1P is a single-channel passive DI BOX equipped with the same type of MU-METAL core transformer used in the DB1A, which provides minimum distortion, linear phase and hum-free transmission also on very long cables. Thanks to the input stage design, DB1P can accept also signals coming directly from the power output of instrument amplifiers, PAD up to 60 dB.

A specially designed input filter is also available for cutting any hiss or buzz noise coming from acoustic or electric guitar and basses.

Proel DB1P Specifications

System Type
1 channel passive DI
Input Impedance
120K Ohm (pad at 0 dB)
47k Ohm (pad at -20/-60 dB)
44k Ohm (pad at -40 dB)
Max Input Level
+15 dBu (pad at 0 dB)
+35 dBu (pad at -20 dB)
+55 dBu (pad at -40 dB)
+75 dBu (pad at -60 dB)
Two Parallel 1/4" jack connectors and one parallel XLR connector (unbalanced)
Jack: Tip Hot / Sleeve Ground
Transformer Balanced (isolated with shielding)
Max. Output Level
Transformer Balanced (isolated with shielding)
-5 dBu (for 0.1% THD at 50 Hz)
+5 dBu (for 0.1% THD at 1k Hz)
XLR male: Pin 2 Hot / Pin 3 Cold / Pin1 Ground
Insertion loss
20 dB
> 100 dB
Phase distortion
0deg. at 20 Hz, 0deg. at 20k Hz
Distortion THD 50Ò20k Hz 0dBu
< 0.007 %
< -105 dBu unweighted
Frequency Response
10 Hz to 100 kHz, +0dB/-1 dB
Pad -20, Pad -40, Gnd Lift, Filter (12" emulator)
Dimensions (W x H x D)
215 x 50 x 125 mm / 9.65 x 1.97 x 4.92 inches
1 Kg / 2.20 lbs
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