Sowter Type 3603z Pro Audio 600/600R CT 1:1 Audio transformers, 100% mu metal core, wound with their extra expensive OCC quality wire option called ´z´.
They are line/bridging input- or output transformers, and they are recommended for instance to generate a balanced output from a sound card or others devices that do not have a balanced output. Or for a balanced to unbalanced output from a sound card og DAC to a preamp, or as input transformer for studio equipment like Pultec EQ´s and 1176 compressors, and probably for a lot of other studio re-builds.
They are a direct replacement for Triad HS-56 1:1.
They have never been used, only tested with a tone generator and a scope, and they have never been near DC voltages or magnetic devices. They can be situated both ways and can be used to convert from balanced to unbalanced and the other way around. They have a broad band width, a low distortion and a very low loss factor, and they make a galvanic separation of elements, thereby introducing less hum and according to many users give a lightly warmer sound. They work best into loads between 200 ohms to 1 Kohm.
Data sheet: https://www.sowter.co.uk/pdf/3603.pdf.
Picture 2 shows a perfectly split unbalanced to balanced signal.
List price is 63 pounds for the standard model, and the ´z´ option is not shown on their website at the moment, but it has been around 10 pound extra. That means a total price for around 73 pounds each + transportation + VAT and custom expenses that will easily amount to about Euros 250/set. My price for the set is Euro 100 plus a transportation fee of Euro 40 inside the EU.
They are line/bridging input- or output transformers, and they are recommended for instance to generate a balanced output from a sound card or others devices that do not have a balanced output. Or for a balanced to unbalanced output from a sound card og DAC to a preamp, or as input transformer for studio equipment like Pultec EQ´s and 1176 compressors, and probably for a lot of other studio re-builds.
They are a direct replacement for Triad HS-56 1:1.
They have never been used, only tested with a tone generator and a scope, and they have never been near DC voltages or magnetic devices. They can be situated both ways and can be used to convert from balanced to unbalanced and the other way around. They have a broad band width, a low distortion and a very low loss factor, and they make a galvanic separation of elements, thereby introducing less hum and according to many users give a lightly warmer sound. They work best into loads between 200 ohms to 1 Kohm.
Data sheet: https://www.sowter.co.uk/pdf/3603.pdf.
Picture 2 shows a perfectly split unbalanced to balanced signal.
List price is 63 pounds for the standard model, and the ´z´ option is not shown on their website at the moment, but it has been around 10 pound extra. That means a total price for around 73 pounds each + transportation + VAT and custom expenses that will easily amount to about Euros 250/set. My price for the set is Euro 100 plus a transportation fee of Euro 40 inside the EU.
