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Custom 300B

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diyamp.org Custom 300B SE
Builder Order
Interactive demo

Affordable customisation · Hearing-first

Build the “best” 300B SE for your ears.

Start from a proven STANDARD build. Pick parts and topology — the schematic updates live. Drill into any stage for education. Then order a finished amp or a parts kit.

LIVE SCHEMATIC Classic SE · click a stage on the diagram
Base topology Changes rebuild the schematic
Chassis
Aluminum thin plate
Bright, open top — light mechanical resonance.
›
Standard default Customised Selected stage Just updated

Select a stage

Tap a block on the schematic

Each stage shows options with cost delta and a one-line sound note. Expand “Learn more” to dig deeper.

Component

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About this part

More components (on the schematic when relevant)

Your configuration

Parts vs full build

Estimated parts kit
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Estimated full build (assembled)
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Delta vs STANDARD parts
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Placeholder HKD figures for demo · not a quote. Sound notes are approximate.

Shareable hash in URL updated.

diyamp.org · Custom 300B SE · concept demo

Ocean teal studio · client-side only · © demo placeholders

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