PowerTube™ Preamp
True to the Music
®
Radial Engineering Ltd.
8
RADIAL POWERTUBE 500 SPECIFICATIONS*
Microphone Input
Circuit Type:
100% discrete tube class-A preamplifi er
Frequency Response:
20Hz ~ 20KHz +0dB/-1dB
Input Impedance:
2.2k Ohms
Mic Preamp Gain:
+63dB
Maximum Output:
+28dBu
Output Impedance:
150 Ohms nominal
Equivalent Input Noise (EIN):
-122dBu @ maximum gain
Dynamic Range:
>93dB
Total Harmonic Distortion (THD+N):
0.03%
Intermodulation Distortion (IMD):
0.012%
Instrument Input
Omniport Input Impedance:
150k Ohms, unbalanced*
Instrument Preamp Gain:
+55dB
Equivalent Input Noise (EIN):
-95dBu
Total Harmonic Distortion (THD+N):
0.015%
Phantom Power:
48VDC - 10mA (as supplied by 500 frame)
XLR Confi guration:
Follows AES spec: pin-1 ground, pin-2 (+), pin-3 (-)
Current Draw:
235mA (maximum draw)
Size:
5.25” x 1.5” x 6.6” (13.34 x 3.81 x 16.75cm)
Weight:
0.7 lb (316 g)
Warranty:
3 years, transferable
* Refers to use with Radial Workhorse rack and mixer. All specifi cations average depending on tube or termination. Please
see web page for further details.
