Transformer Based Passive Preamp

[wytco0]

I was searching here a week or two ago for any info on Transformer based Passive Preamps and I coiuld not find anything. The current UK HI-Fi News (October 2004) has a review of the Music First Audio 'Passive Magnetic Pre Amplifier' and they like it very much.

I assume that the key to these type of product os the quality of the Transformers and that these transformers are very specialialized, however does anyone know of any information DIY versions?

Thanks

 

[GKU]

Hi wytco0,

Yes I have build one some years ago from the French "La Maison de L'Audiophile". Very simple design. But sounds very nice.
Can give you later this week more info, because I'm out from home till Friday.

Rgds

Gerd

 

[ThorstenL]

Konnichiwa,

I was searching here a week or two ago for any info on Transformer based Passive Preamps and I coiuld not find anything. The current UK HI-Fi News (October 2004) has a review of the Music First Audio 'Passive Magnetic Pre Amplifier' and they like it very much.

I assume that the key to these type of product os the quality of the Transformers and that these transformers are very specialialized, however does anyone know of any information DIY versions?

The transformers used by MF-Audio are custom versions of the Stevens & Billington TX-102 MKIII Attenuator transformer:

Magnetic Volume Control TX102

Seeing as you are in Hastings, why not give S&B a ring?

Sayonara

 

[wytco0]

GKU, much appreciated.

Kuei Yang Wang, I didnt realise where they were, they are about 10 miles away. Thanks for the info, i will contact them.

 

[moamps]

I was searching here a week or two ago for any info on Transformer based Passive Preamps and I coiuld not find anything.

Did you try "TVC" in search engine?

 

[wytco0]

Did you try "TVC" in search engine?

Moamps, I hadnt but I have now, Thanks for the pointer.

I didnt know that acronym what does it stand for ? Transformer Volume Control? seems well used by the tube followers.