Insides of Lazarus H-1A amp...

Yep.. Greg Miller.

About a year ago, I e-mailed Muse looking for Greg Miller. He doesn't work there. I'm thinking that perhaps he's still in North Hollywood, CA ?

If anyone is interested, I have lots of Lazarus literature & reviews. Jsujo, one review compares the H-1A stereo amp versus H-1A monoblocks. The monoblocks had more separation between instruments and better high frequency extension.

Jsujo, yes.. risky to upgrade to the H-1A without schematics. But a good tech can always change the factory pc to something exotic and have the circuit board resoldered with lead-free, 4% silver solder. These tweaks will help. But if you're set on an H-1A, I have a lonely unit not in use.

I have two of the "Class A" models in mono right now, using the XLRs... sounds pretty darn good. :-)

Looking at your pic, I am strongly inclined to say that you have the H-1 amplifier, and not the H-1A. Here's a pic of the H-1A ..

http://hometown.aol.com/pattyd4843/myhomepage/auto.html

The H-1A has a more sophisticated main power supply, dual power rectification, increased voltage stabilization, and reduced loading on the output of the tube stages. Also, there are high voltage (160uf, 450v) capacitors directly at the plate resistor of the tubes for better separation, image stability and dynamics.

If you think the H-1 amp is good .. feast on the H-1A, or better yet, a Lazarus "Class A" high-current amp with 4 tubes. They will blow away the H-1 ..

The "Class A". This model is Lazarus's best stereo amplifier. These amps have TRUE class A designs, unlike all other models which only have pure class A designs.

The "Mark II" also has 4 tubes.. with a pure class A design and a high power output.

Jeff, you might be able to obtain a schematic here..

http://www.incarock.com/preamps/lpa.htm

"Manuals and schematics available for $50.00 USD plus shipping, all models."

I've scanned a bunch of Lazarus literature at Kinkos today.
Let me know what you need ..

H-1A Brochure/Pamphlet (2 pages)
The H-1A User's Manual (7 pages)
Lazarus Pricing/Upgrading info (3 pages)
The Amplifier Story (2 pages)

I have a few more articles somewhere. I'll look for them.
If you have questions, e-mail me at donati@usa.com.

Thanks,
Anthony