Preamp Deal of the Century

Stevem1960

I am using Mauhorn IV with Lowther EX2 drivers, driven by Cary 300B SET monos. REL Strata 5 for the lows . Point source & no-crossovers is truly something to hear. Love the combo with my Chardonay.

Bwhite, I wasn't "lead to believe that the Cortese was microphonic". It WAS microphonic. Tap the top plate and hear it ring like a chime! Thump the volume control and just listen to it reverberate through the room! Tizziness in the upper mids and highs at anything greater than moderate volume levels. The Cortese is a very good preamp, but dead silence is not one of its assets.

Curriemt, looks like what you experienced is accurately described as a microphonic Cortese. Not sure what vintage yours was but mine was built in late 2002. It was rock solid. Even heavy thumps on the chassis wouldn't cause any problems.. and that's saying something considering I was using tubes from 1940.

My previous Suprateks (Chardonnay/Syrah) had issues caused by just lightly touching the chassis. It made piano sounding noises.

FYI - You are correct, the Janus problems have been fixed - I believe current models have fewer tubes in the circuit and unfortunately don't sound quite as good as the older unreliable Janus.

Steve, come on... please! The Supratek's are NOT "high resolution" preamps capable of reproducing low level detail beyond what (almost) any decent (non-metalic or ceramic) speaker is capable of.

Personally, metallic and ceramic drivers are not my cup of tea. I cannot listen to them because they introduce a non-natural hardness to the music - I guess that can be perceived as "inner detail". If we assume that these types of transducers "bring out the detail" of the Supratek, I would have to disagree and suggest that they create an illusion of air and inner-detail because of their ringing, metallic composition.

Also remember there is a pair of interconnects, an amplifier and a pair of speaker cables between the Supratek and the speakers.

In order to really hear what a Supratek does you have to remove it from your system.

Get a record that starts off slow & quiet. Use Bolero or something like that.. then run your source directly to your amp and then tell me what you hear.... I am sure that will end the discussion about the Supratek's inner detail.

You may end up sending your preamp back to Mick.

Bwhite, I do not know what the vintage of my Cortese was, as I was the second owner. If I had to guess, I would say mid-2003. I suppose that I should have qualified my statements by saying that MY Cortese had these problems rather than generalizing.

As for the Janus, I have one of the earliest ones and have had no problems whatever. What evidence do you have that the later units do not sound as good as the earlier? FWIW, my experience doesn't match that. An audio buddy has a new Janus that we have auditioned in my system. I cannot tell the difference, except that his is ever so slightly quieter in the phono stage.