OA-JC3 R2R USB DAC
OA-JC3 R2R USB DAC
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Compact, High-Precision Tube R2R DAC
The OA-JC3 features a ladder-structure DAC, which, despite its simple principle, requires high manufacturing precision. After five years of development, it incorporates ultra-small modules with resistor error controlled to within 0.1%. It delivers high-precision audio quality, distinct from the widely used ΔΣ structure audio DACs.
◆The amplification section uses 12AU7 vacuum tubes to enhance mid-range detail and produce a rich, smooth sound.
◆It supports various modern audio codecs, enabling MQA full decode, PCM 32Bit/768KHz, and DSD515 (PCM conversion) playback.
◆Its excellent circuit design ensures clean signal transmission and accurate dynamic range reproduction that accentuates each frequency band.
Specs
| Item | Specification |
|---|---|
| DAC | R2R |
| Frequency Response | 20Hz-20KHz (+/- 2dB) |
| S/N Ratio | 83dB |
| THD+N | 0.15% @1kHz |
| Stereo Isolation | 73dB @1kHz |
| Max Output | 2V (rms) |
| Digital Input Terminal | Type-C |
| Analog Output Terminal | RCA |
| Dimensions (mm) | 125 x 100 x 70 |
*The JOYCRAFT series are assembly products where Oriolus has completed the audio circuit, and customers need to install the vacuum tubes into the sockets and assemble the frame themselves.
*For the unit to operate, a separately sold AC adapter (DC20V) is required. (PD-compatible AC adapter and USB-C cable are not included)
*(Regarding warranty) Due to the nature of being a DIY kit, the warranty primarily covers initial defects only. Failures or damages caused by replacement or modification of vacuum tube parts are not covered.
※Windows USBAudio Driver Download Link
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