New listening room electrical design

I'm moving to anew house in a few weeks, and trying to figure out the electrical design.
My current room was designed by Rives and I have numerous dedicated lines in it, so, I'm somewhat familiar with the topic.
The new system proposed outline:
New dedicated subpanel, exclusively for the audio components (main located in the garage, adjacent to the new room).
I have 2 speakers (Avantgarde) with powered subs
2 separate JL Fathom subs
2 mono block amps (lamm ML2)
and number of front end component, locate on stand, that going to be on the side wall
(Preamp, crossover, TT and CD player)
I'm thinking:
Two lines with 2 duplex receptacles each to power avant-garde and JL subs
Two lines with one duplex each for Lamm mono blocks
Here is my main question:
For the preamp, crossover, TT and digital I have the following options:
1.   One line with two duplexes for the analog stuff
       Another line for digital
       3 duplex recptacles on 2 separate lines
2. One line (or two) and one power distribution box with 3-4 duplex receptacle, connected to the wall receptacle
3. Two lines hardwired (no wall receptacle and no IEC and power cord in the Power distr. box) to power distribution box, separating analog from digital receptacles inside the box

What is a better approach for the front end components?
Multiple lines feeding one duplex each,
One line feeding multiple duplexes
One line feeding power distribution box?
Thanks again.
The room and garage are in the above the grade basement, an concrete slab
no crawl space under the slab
Subpanel will be about 10-12 Ft. away from the main panel, and can be located on the wall, separating garage from the audio room.
The 3 walls of the audio room are sheetrock on studs over concrete
The other side wall is internal, non-bearing, sheetrock on studs, that is likely will need to be reinforced.
The ceiling is finished, with the living room, kitchen above it.
I would imagine, there is some space for the wiring.
MC vs. MC armored cable duly noted
The new Synergistic Research Black outlets are stamped TR and one can see that TR mechanism in the outlet orifice.
The ST Tesla Plex outlets are in fact made by Levitron + modified by Synergistic Research.
The SR Black outlet has many sonic properties that I think make it worth auditioning in one's system. They are expensive and to me worth it. They are one of the few audio grade outlets sold with a 30 day return policy.

David Pritchard
I second jea48's suggestion for Square D QO line for your panel!
Solid copper buss bar, and the convenient trip window that shows a tripped breaker.  

The audio room is in the basement?

Garage floor and audio room floor are approximately on the same elevation?

Common garage wall is unfinished concrete?

All walls and ceiling of the audio room are finished drywall?

Three walls of the audio room are concrete furred out with studs? Are you sure they are studs and not 3/4" furring strips? If studs are they 2" x 4 1/2" nominal studs or possibly 2"x 2" nominal? (1 1/2" x 1 1/2")

If they are indeed 2x4s do you know if possibly they were spaced out from the concrete walls by at least 1" or 2"? Hopefully so. You can check this by removing a wall plate from a communication wall outlet, if there is one in the room. Otherwise remove the cover plate from a duplex receptacle. Take a metal close hanger and straighten it out or cut out/off the long part of the hanger to use as a depth probe. If you are lucky the communication box may be an open back wall communication bracket. Then you can physically look inside. If not make a hole against the side of wall rough in box, side opposite the stud side the box is supported to. Push the wire through the hole made in the drywall to the concrete wall behind. Mark the front of the wire probe. Measure the length.

The first 4 points are correct
im not sure about studs or furring strips over concrete
i will find that out