RoXdon EDISON Transformer Preamplifier

 

pictures copyright Runway Pro Audio

pictures copyright Runway Pro Audio

 

pictures copyright Runway Pro Audio


 RoXdon EDISON Transformer Preamplifier

 

BRITISH HANDBUILT SOUND EQUIPMENT

The RoXdon EDISON Transformer Preamplifier is a passive stereo preamplifier utilising transformers to achieve gain together with audio isolation to prevent earth loops.

The RoXdon EDISON is a hand built hardwired (no internal connectors or PCB's) passive transformer audio unit featuring left & right inputs & outputs via 1/4" TS jack and RCA phono connections all housed in a diecast alluminium enclosure providing comprehensive electrical shielding. A high quality  audiophile grade potentiometer is used for volume adjustment via a Marconi style blue control knob.

The two heavy duty custom made Z11 Iron Core Transformers have matched parameters to ensure that the left and right sounds are balanced and coordinated. These transformers impart warm sounding harmonics and subtle coloration as found in vintage analog sound equipment.

FEATURES

*  Passive Audio Circuit
*  2 x Custom Z11 Iron Core Step Up Transformers
*  20Hz to 20KHz Frequency Response
*  Input Impedance: 600 ohms
*  Maximum Gain: 16dB
*  1/4" TS Jack + RCA Phono Input & Output connections
*  Audiophile grade volume control
*  Diecast Metal Case (17cm x 12cm x 5.5cm)
*  Base fitted with 4 rubber feet
*  Weight: 1.45Kg
*  Hand built in Great Britain
 

NOTE: Unit is not designed to be connected to amplifier speaker outputs

 

What are Audio transformers? Why do they sound so good!

 Video published in May 2019: DIYRE “What Are Audio Transformers? Why Do They Sound So Good?” featuring Peterson Goodwin, Released by DIY Recording Engineering.

 

BRITISH HAND BUILT STUDIO EQUIPMENT

 

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