ZM's Magnetic Preamp

The one and only
Joined 2001
Paid Member
Many moons ago the Mighty Zen Mod and a few of the
Burning Amp crowd came up the coast to visit me at
Sea Ranch. While most of us were partying upstairs
ZM took over my workshop and spent most of the day
hacking away at a secret project. This effort resulted
in Planky, a discrete based preamp assembled on
plates of mdf butt glued together.

A very unique aspect of this design is the volume control
of relays and a tapped inductor. See the pictures....
 

Attachments

  • PLANKY 1.jpg
    PLANKY 1.jpg
    371.3 KB · Views: 820
  • PLANKY 2.jpg
    PLANKY 2.jpg
    631 KB · Views: 807
More recently his friend Vladimir was visiting California
and brought me ZM's later, more polished effort, with such
wife pleasing features as a chassis, remote control (and
personalized display greeting) which stars in the main
system upstairs, driving a pair of Beasts (of a thousand
Jfets) and SR-1 speakers.

First and foremost, it's a great sounding preamp. Excellent
tonal balance, imaging and transparency. When I began to play
some vinyl, I suddenly was able to hear something new, a flaw that
turned out to be the anti-skating, re-adjusted by the cleaning lady,
bless her heart 🙂

After that I spent many hours enjoying this piece, I would say the
culmination of ZM's journey into magnetism.

And lots of gain, more than my other preamps, and the ability to
drive the input capacitance of the Beasts and other follower
amplifiers without the need for additional front end gain circuits.

It has a permanent place in my system.

Here's the porn and glory, showing the preamp along with the front
panel display and also these new smaller versions of the 1K Beast.
 

Attachments

  • ZM1.JPG
    ZM1.JPG
    282.7 KB · Views: 755
  • ZM2.JPG
    ZM2.JPG
    319.1 KB · Views: 719
  • ZM3.JPG
    ZM3.JPG
    350.5 KB · Views: 748
  • ZM4.JPG
    ZM4.JPG
    499.7 KB · Views: 763
  • ZM5.jpg
    ZM5.jpg
    460.5 KB · Views: 780
I'm big fan of one of the Greats - Rutger Hauer; he was not just an example of really talented and charismatic actor, but also example of hard working Man

Completely logical that this movie is always in back of my (ZM's Omnipreciousssss) mind - https://www.imdb.com/title/tt0070842/?ref_=nv_sr_srsg_0_tt_7_nm_1_in_0_q_turkish%20delight

besides, always glad to remember one of best scenes in entire moving pictures history .........

as far is anyone able to lurk in someone's public persona, that scene is epitome of his soul

(recommended literature: https://www.goodreads.com/book/show/849068.All_Those_Moments )