Executive - Headphone Preamp - DIY
Executive is a simple headphone amp and line stage with a directly coupled design — a keep-it-simple-stupid headphone output stage, optimized for discrete op amps, with a robust power supply behind it.
It's a combination of state of the art and repairable. Any part can be replaced. Build yours today.
| Topology | Directly coupled, discrete op amp |
| Power supply | Bipolar ±15 V |
| Rectification | SiC diodes — eliminates switching spikes |
| Function | Headphone amp + line stage |
| Gain stage board | 42 × 35 mm |
| Power supply board | 140 × 69 mm |
| Mounting holes | M3, both boards |
| Serviceability | Fully repairable — any part can be replaced |
What's included
The DIY kit includes the gain stage board and the power supply board.
Documentation & parts
Gain stage board
Power supply board
Note: ECA-2WM100 is backordered — ECA-2WM100B is the recommended substitute.
Mains parts — recommended
Gain Stage
Now in its updated power supply, we have removed the 2426 from the previous design. This has allowed for more current demanding operational amplifiers to sound just a bit more dynamic and expansive.
Power Supply
Top to bottom redesign. From a single rail to dual voltage design for true dynamic swings.