OA-JC5 Vacuum Tube Headphone Amplifier
OA-JC5 Vacuum Tube Headphone Amplifier
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Tube amplifier that delivers emotional mid-range expression with realism
The OA-JC5 is a hybrid headphone amplifier featuring a traditional 12AU7 vacuum tube in the pre-stage and 2SA1943 and 2SC5200 transistors in the post-stage.
◆It offers rich and clear sound quality, combining the warmth characteristic of vacuum tubes with the precision of transistors. The soft glow of the filaments and the blue light of the LEDs deepen and enhance the music listening experience.
◆By employing different circuit configurations for the pre and post stages, it enables precise, noise-free signal amplification, achieving an emotional and expansive tone that fully encompasses all sound components of the music.
Specifications
| Item | Specification |
|---|---|
| Frequency Response | 10Hz-80KHz (+/- 1dB) |
| S/N Ratio | 90dB |
| THD+N | 0.4% @1KHz |
| Stereo Isolation | 65dB @1KHz 32ohm |
| Max Output Power | 720mW @32ohm / 60mW @600ohm |
| Input Sensitivity | 500mV |
| Input Impedance | 100K ohm |
| Output Impedance | < 1 ohm |
| Headphone Impedance | 8-600 ohm |
| Gain | +12dB |
| Analog Input Terminal | RCA |
| Analog Output Terminal | 6.35mm |
| Volume Control Type | Analog |
| Dimensions (mm) | 125 x 100 x 70 |
*For the JOYCRAFT series, Oriolus completes the audio circuit, and customers assemble the product themselves, such as inserting vacuum tubes into sockets and assembling the frame.
*The device requires a separately sold AC adapter (DC20V) to operate. (PD-compatible AC adapter and USB-C cable are not included).
*(Regarding warranty) Due to the nature of a DIY kit, the warranty primarily covers initial defects only. Failures or damages resulting from replacement or modification of vacuum tube parts are not covered.
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