What's about EDGE Audio ?

Hi Bill,
the input impedance of the NL 12 is circa 34 Ohm. Voltage gain is 30 dB.

MMB.

MMB, maybe you meant 34K Ohm? If so, it would probably be ok with most tube preamps but you may want to try a given combination before you make any commitment. If a power amp's input impedance is too low relative to the preamp's output impedance it can result in rolled off bass and limited dynamics.

The new Edge amps 12.2 series do not use the laser biasing technology of the 12.1 and earlier models. The new owners are not associated with Norbert and Maker (I think thats right) who started Edge and ran it out of Florida. The article I read which was a review of the new 10.2 went over the change briefly. Edge has indictaed they have experience no problems with the laser bias and when I spokw ro Edge about my Sig 1.1 SE preamp they indicated they could service any model. I have experienced no problems with my Edge products and think thsy sound fantastic. I am currently running my Edge amp with an Allnic L-3000 tube preamp (since last Sept) and think it sounds better than the Edge combo. I love what a good tube pre brings to the table. I do not know th production date of the various models but as long as it is in good shape I would not worry too much. I have had mine since 2006-constant use and no issues.

Just a quick follow up. The only issue I noticed at first was very limited ability to increase the volume particularly with CD. Very loud quickly with an impact on balance at low levels. I found this interesting since both the Edge and Allnic had about 20db of gain. I at first returned the Allnic because I felt this was a significant limiting factor. Decided to have the 14db gain transformer option change made and have been very happy since.

I have an Edge NL12.2 and think it is fabulous. Transparent, dynamic, toneful, powerfully- everything you can and should ask for in an amp in that price range. System matching is always important and the Edge amps like a fast, clean sounding speaker that can image and throw a soundstage. I've never had any issues with Edge amps. Both the new owners and past owners have been great to work with.
My current set up:
Esoteric k-01 and separate clock
Edge NL 12.2 amp
Edge NL 1.2 pre amp
Custom speakers using Accuton drivers
Virtual Dynamics cabling