15
Symetrix 506E Headphone Amplifier User’s Guide
Hardware Specifications
Input/Output
Maximum Input Level
+21 dBu
Maximum Output Level
2000 ohm load: 12V RMS
600 ohm load: +21 dBm
60 ohm load: 3.3V RMS
Input Impedance
Program and Cue Inputs: 20K ohms balanced
Direct Channel Inputs: 20K ohms unbalanced
Output Impedance
100 ohms
Indicators
Clip LED
Lights at 2 dB below onset of clipping
Signal LED
Lights at –30 dBu output level
Performance Data
Frequency Response
20 Hz to 20 kHz, +0, –0.5 dB
THD+Noise
<0.05%
Residual Output Noise
<-90 dBu
Maximum Gain
Program and Cue Inputs: 20 dB
Direct Channel Inputs: 10 dB
Separation
70 dB @ 1000 Hz typical
Connections
Input
Program Inputs and Cue Input: balanced XLR and balanced TRS
Direct Channel Inputs: unbalanced TRS
Output
Unbalanced TRS
Power In
Standard IEC Power Inlet
Physical
Size (H x W x D)
1.72 in. x 19 in. x 7.25 in. / 4.4 cm x 48.3 cm x 18.4 cm
Weight
7.6 lbs. / 3.5 kg net
Electrical
Power Requirements
115 VAC nominal, 105 to 125 VAC, 60 Hz, 25W max
230 VAC nominal, 220 to 240 VAC, 50 to 60 Hz, 25W max
