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Satyr 4 DIY HiFi Headphones Kit by Capra-Audio
$79.99
Capra Audio's Satyr 4 is an open-back HiFi headphone that you print and build yourself. This LDO kit supplies everything else, from drivers and pads to wiring and fasteners.
LDO Satyr 4 DIY HiFi Headphone Kit
Satyr 4 is an open-back, over-ear headphone designed by Capra Audio. The body parts are 3D printed, and this kit from LDO supplies the rest. It includes the drivers, pads, wiring, tuning resistors, acoustic mesh, fasteners, cable, and a USB-C dongle DAC to drive them.
Tuning comes from interactions between the driver, chamber volume, damping material, and resistor value, all of which Capra worked out on measurement rigs and published (see below). The results compete with commercial headphones that cost several times the price.
Model files and the full build guide are free on the Satyr 4 Printables page
Satyr 4 headset shown assembled. Printed parts not included.
Tuning and Measurements
Capra publishes response measurements from four separate rigs.
What separates the Satyr 4 is the work around it. Chamber geometry, damping behind the driver, the mesh in front, pad depth, series resistance, etc. Change any of those and the response moves, which is why the kit ships specified parts rather than cheaper alternatives.
B&K 5128
A head and torso simulator with an anthropometric ear canal, and the closest thing the industry has to a standard for headphone measurement.
B&K 4128
The previous generation of the same family. Useful for comparing against the large body of older measurements taken on it.
IEC 711 Coupler
A widely used clone coupler. Reliable through the bass and midrange, less so above roughly 8 kHz.
MiniDSP EARS Pro
A professional test fixture with IEC 60318-4 couplers and per-unit calibration. Standard-compliant and repeatable.
Click any graph to open it at full size. Each rig uses a different coupler and compensation, so the four traces are not directly comparable to each other. Read each against other headphones measured on the same rig.
Kit Contents
Everything you need to build the Satyr 4 headphones, except the printed parts.
- Drivers. A matched pair of 50 mm dynamic drivers, the units Capra specifies in the published BOM.
- Ear pads. Capra's cooling pads, sized for the Satyr 4 baffle. They also fit the Sennheiser 6X0 family.
- Tuning resistors. The Satyr 4 runs a series resistor per channel. The value shifts the bass and treble balance, so it is part of the tuning.
- Nylon acoustic mesh. The fine mesh that stretches over the drivers.
- Wiring and cable. Internal wire plus a headphone cable terminated for the dual-entry 3.5 mm layout.
- Threaded inserts and screws. Heatset inserts and the full fastener set, sorted and labeled by size.
- USB-C dongle DAC. Drive the Satyr 4 headset from a phone or laptop without needing a separate amp.
Designed by Capra Audio
Open Source Design
Satyr 4 is the fourth generation of Capra's open-back design. The files are free, the bill of materials is public, and the measurements are published alongside them. Nothing is proprietary. Every part can be reprinted or replaced.
Each cup assembly is a stack. The grille, housing, mesh over the driver, driver plate, baffle, and pad ring, drawn together with a set of screws. Capra documents the order and orientation of every layer, which matters because the stack is the tuning.
The Build
Skills Needed
- Basic soldering. 4 driver tabs and 2 jacks
- Heatset inserts installed with a soldering iron
Required Tools
- Soldering iron and solder
- Small hex and Phillips drivers
- A 3D printer capable of PETG and TPU
Filament
- 160g of PETG for the cups, baffles, grilles, yokes, and arms. PCTG and nylon are both durable upgrades
- Roughly 60-80g of TPU for the headband, comfort strap, and spacers
Print Options
- Static or adjustable arms with pivot blocks
- Standard or XL headband, depending on head size
- Color scheme. Capra's configurator previews combinations before you slice
Before you order
Printed Parts Not Included
You print the housings, baffles, baffle rims, driver plates, grilles, yokes, and attachment arms in a rigid filament (PETG recommended), and the headband, comfort strap, and spacers in TPU. Capra supplies one side of the mirrored parts, so you will duplicate and mirror a few pieces in your slicer before printing.
The headband is a separate download, the Capra Headband V3 , and it has its own print notes.
Assembly Video
Capra Audio's walkthrough of the Satyr 4 build.
Technical Parameters
Resource Hub
Files, instructions, and tools from Capra Audio
Start here
Build Documentation
- Satyr 4 Instructions and BOM
Print settings, orientations, and the assembly sequence.
- Assembly Video
The full build, worth watching before you start.
- Capra Configurator
Preview color combinations before you slice.
- Capra Audio Discord
Build support from the designer and other builders.
Files and models
Print Files
- Satyr 4 on Printables
Cups, baffles, grilles, yokes, and arms.
- Capra Headband V3
Separate download. Standard and XL, printed in TPU.
- All Capra Audio Models
Other headphone designs and accessories.
- Capra Squig Tool
Compare measured responses across Capra designs.
LDO-SATYR4
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Capra Audio's Satyr 4 is an open-back HiFi headphone that you print and build yourself. This LDO kit supplies everything else, from drivers and pads to wiring and fasteners.