Phantom III - 48V Phantom Power Supply Overview

Different condenser microphones specify different amounts of required phantom power.
 As a rule these ratings can range from 48 volts all the way down to 9 volts. Fortunately,
there is some flexibility in terms of matching phantom voltage to your mic. A rough rule
of thumb would be ?more is better.?
For example, a 24-volt condenser mic will run perfectly on 48 volts. In fact, mics rated
at as little as 9 volts can often operate on 48 volts, but you should check with the manufacturer
first. Conversely, a mic will generally perform best driven by not less than its rated voltage
so, for a 48V mic, you would obtain best results with 48 volts of phantom power. The
Phantom III is a great choice for the above needs.

Phantom III - 48V Phantom Power Supply Specifications:

Input Connectors XLR female
Output Connectors XLR male
Frequency Response 10Hz ? 25kHz
Output Phantom Power 48V DC +/- 2V
Output Noise -115 dBV
Current Drain 14mA
Power 18V AC (Adapter included)
Dimensions 5.25x2.75x1.75 inches (130mm x 74mm x 45mm)
Weight 1.3 lbs. (315g)
 

The challenge when using a condenser microphone with a preamp pedal, direct box or stage amp is that most of these only have unbalanced inputs. And as most phantom power supplies are only equipped with balanced inputs and outputs, making a proper connection is often difficult or impossible due to the impedance and level mismatch. 

The SB-48UB is a single channel phantom power generator that converts the power from a 15VDC supply to 48 Volts for use with a condenser microphone or active direct box. Inside, the SB48-UB converts the signal to both a lo-Z balanced XLR output and a hi-Z unbalanced ¼" out. Both outputs may be used concurrently whereby the XLR could feed the PA while the ¼" out could feed a stage amp or pedalboard

The Radial SB-48 is a high performance phantom power generator that employs a non-radiating charge pump circuit to create a stable, ripple-free 48 volt supply for active direct boxes and condenser microphones. The stereo design features XLR inputs and outputs with a choice of 48V and 12V operation. The SB-48 is powered by a single 15VDC 400 milliamp supply that is included. The connector may be locked into place using a retention clamp. As with all Radial products, the SB-48 is manufactured in Canada from solid steel and powder coated for years of great looks!

Shure RK-183 Phantom Preamplifier for MX183-184-185

Alctron PS200 Portable 48V Phantom Power Supply for Condenser Microphone Live Broadcast Mic Power Supply