The Jensen Transformers JT-DB-EPC ISO-MAX 12:1 "Direct Box" Transformer features a double Faraday shield and a 30 dB magnetic shield. Also available with angle bracket mount and wire leads.
These Jensen Direct Box Transformers are the ideal choice for coupling guitar pickups, musical instrument and other line level outputs to low impedance microphone inputs. They also give excellent results when used as an output transformer for Tube type condenser microphones. Direct Box transformers provides ground isolation and allow long cable runs from high impedance sources without excessive bandwidth loss.
Here are some specs:
It may also be worth mentioning that the JT-DB-EPC is a direct replacement for the CT283 transformer, as used in the Rode Classic II microphone. Also available with angle bracket mount and wire leads.
With inferior products coming from all over the world, we think it is a genuine treasure to find a company like Jensen Transformers, actually designing and manufacturing some of the finest products in the world, right here in the USA, and we are proud to be able to offer their products. The JT-DB-EPC is made in the USA, is backed by the manufacturer's comprehensive one-year warranty, and has a remarkable 20-year warranty on the transformer device itself.
When loaded by the 1 kΩ input impedance typical of mic preamplifiers, this transformer has a 140 kΩ input impedance, making it ideal for high impedance sources. It can be used with or without an active buffer as a "direct box" for electric guitars or synthesizers. A 30 dB magnetic shield package is standard.
This picture shows the bottom of the transformer.
The JT-DB-EPC is packaged in a small cardboard box as shown here, and we include a printed copy of the data sheet.
Here is the JT-DB-EPC spec sheet. PDF format.
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