Music First Audio Passive Magnetic Preamplifiers?


I want to know if anybody tried and compared this rare preamplifiers.
I´m really interest on this brand but I couldn't find anything here in Audiogon.
I will apreciate your opinions.
Thanks
elduende14
A simple one at
www.lightspeedattenuator.com
It also listed in the manufacturers listings on Audiogon

Cheers George
Also if you PM me your email address I'll send you a PDF broucher.
Cheers George
I've just come across this thread and see that the Myth preamp was mentioned by Dracule1 and others. I have this preamp and I'm extremely happy with it. In my system it provides great detail and transparency, which I got from a transformer passive pre that I had before, but the Myth also has a sense of weight and realism that the TVC lacked. I find the bass well extended and articulate, the mid very clear, and the treble possibly not as sparkling as some equipment but still characterful and balanced.
It has the big advantage of five inputs, because I don't want to have to get up, switch everything off, change cables, and switch it all back on again every time I change from vinyl to CD.
But the biggest advantage of the Myth over other LDR preamps is that it has a buffer that gives it an output impedance of less than 3 ohms, which is necessary to match the input impedance of my power amps.
I haven't heard a Music First or the Bent TAP-X, but some of those who have made comparisons reckon that the Myth is better than the former, and in some respects beats the latter. So with its facilities and useability in my system it's definitely worth the price.
Since the use of LDRs for attenuation is in the public domain I don't understand the hostility towards the Myth that's expressed in some quarters, and I notice that the term "Lightspeed" is used by a cable manufacturer and a mains conditioner, so that doesn't appear to be anybody's copyright.

I've heard the copper and silver versions of the MFA. They sound great but, yes, very overpriced. You have so many more options if passive is what you want. I had the Bent Autoformer preamp and absolutely loved it. Much cheaper than MFA. Others to consider: Placette and Django. Also I understand the Dodd is very special (which is battery powered, I think).
I own the MFA copper classic and the MFA Reference. They are worth every penny IF you value sound. I have directly compared it to the latest Tube Research Labs $35k preamplifier and the classic walked away from that unit. I have also c impeded it to the $20k (latest version) Concert fidelity Pre ( which at this point is to my ears the finest active line stage I have heard) and while the Concert Fidelity was better than the Classic; the classic certainly was not embarrassed. The classic lost out also to the $24k audio research anniversary unit but again..., it was not an embarrassment. The latest Allnic with the upgraded transformers was no contest at all and that unit was $12k.

Value is in m opinion not just the sum of the parts, but also the intellectual property that went into a thing and also..., can I get that same sound and build quality somewhere else.

Now the Ref is just iin another league altogether and if you haven't heard it or been able to do real head to head comparisons in the same system at the same timel.., I would suggest you know not what you are talking about.

I have searched a long time for reference pieces and for me these two units are amongst the best I have heard.

I would rank as follows
Concert fidelity (latest) = MFA Reference 20k and 16k respectively
Audio Research Anniversary $24k
Karan reference mkII ~$21k
MFA Classic copper ~$2.9k