# Three rectangles, and the proportions do all the work

> An amp stack drawn front-on as flat blocks reads instantly at any size, because the ratio between a thin head and two square cabinets is a shape nothing else makes.

August 19, 2026 · https://justog.club/stories/amp-stack-front-on

Three rectangles, stacked. A thin one on top, two square ones underneath, twelve faint circles
showing through the cloth between them. One word on the top rectangle: VOLTHAUS.

Nothing else is drawn, and nothing else needs to be.

## What is this shirt actually showing?

An amplifier head sitting on top of a pair of speaker cabinets, drawn as flat blocks with almost no
internal detail.

The stack is the single most recognisable silhouette in amplified music, and this print is testing
that claim by removing everything except the outline and the proportions. No knobs, no piping, no
handle — just three rectangles and the faint suggestion of speakers behind cloth, which is close to
the least information a stack can carry and still be a stack.

## Why does the ratio between the rectangles do the work?

Because that ratio — a shallow head sitting on two nearly square cabinets — isn't shared by any
other stacked object people commonly draw.

A bookshelf, a filing cabinet, a set of drawers: none of them puts a thin box on top of two square
ones in that proportion. The eye reads the shape as an amp stack before it reads any of the
detail inside it, which is exactly why the print can strip the detail out and lose almost nothing.

## What makes a stack drawing like this one worth wearing?

How much is left in, rather than how much is left out.

The twelve speaker circles showing faintly through the grille cloth are the one piece of interior
detail this drawing keeps, because a cabinet drawn as a completely blank rectangle stops reading as
a speaker cabinet and starts reading as a filing cabinet. Grille cloth is a mesh you can see through
once you know to look, and keeping that faint suggestion is what tells the eye there's something
alive behind the flat colour.

## Can a real amplifier's name go on a shirt like this one?

Printing a real manufacturer's model number or panel design is the ordinary licensing case, not a
hard no — plenty of makers license their own marks for exactly this kind of print. It's only a
problem when the shirt implies the maker endorsed it, rather than just naming what's pictured.

VOLTHAUS isn't a real maker; it's invented so the front panel could carry a name without that
paperwork being part of the job. A stack built around somebody's actual amplifier is a shirt where
the permission is worth getting, because the whole point of the print is that specific rig.

## Does this work for a different stack, or a different piece of equipment entirely?

Any tall equipment tower with a strong, unusual silhouette works the same way — a rack of studio
gear, a PA stack, a synthesiser case standing on its own cabinet. [A guitar's own
silhouette](/stories/guitar-headstock-silhouette) is the same argument made at the opposite
end of the signal chain: an outline so specific that stripping away everything but its shape still
leaves something instantly readable.

[The inside of a valve amp](/stories/valve-glowing-amp-guts) is the opposite move on the same
subject: instead of stripping a familiar outline down to its proportions, it opens the object up
and shows what's normally hidden inside it. Both are ways of making a box people walk past every
day look at as an object rather than furniture.

## Isn't a stack drawn this flat just a diagram?

It's a diagram in the sense that a coat of arms is a diagram — reduced to the shapes that carry the
identity and nothing else.

A stack this size only reads at a glance because of what's missing, not despite it. Add the piping,
the handle and the corner protectors back in and the print stops being a shape you recognise across
a room and becomes a small, busy drawing of a specific product — a different, and much less
wearable, object.

## Does it print well?

Yes — flat rectangles with hard edges are the easiest artwork there is to hold on fabric.

Silver for the speaker circles keeps them a suggestion rather than a focal point, so the eye settles
on the outline of the stack first. Black for the ground and cream for the rectangles is enough
contrast without needing a third colour, and the [circles behind the grille cloth read better
coarse than fine](/stories/speaker-cone-concentric) — the same rule that governs any print
where the detail sits below the weave.

## How do I get one made?

Describe the stack at [JustOG](/) — how many cabinets, what's on the head's panel, and how much
speaker detail to keep. Pick a direction, drag the crop frame, see it composited on the real
garment, and it's made to order and shipped.

Designs other people have published are in the [shop](/shop).

One thin rectangle on two square ones, and the whole thing reads before anyone's close enough to
see the word on it.