The Radial J33 is a combination stereo phono preamp and direct box designed for dynamic cartridges. Careful attention has been paid to delivering a smooth sounding RIAA transfer curve while keeping noise down to the absolute minimum for the noise-prone world of 33 RPM long-play records. Both unbalanced consumer line level and balanced mic level outputs are supported.
Specifications
Block Diagram
Graphs
| Specifications | ||
|---|---|---|
| Audio circuit type: | Active circuit | |
| Number of channels: | Stereo | |
| Frequency response: | RIAA response curve for phonographic playback | |
| Dynamic range: | 91dB | |
| Total harmonic distortion: | 0.002% @ 1kHz (-33dBu input level) | |
| Intermodulation Distortion: | 0.025% @ -45dBu input | |
| Input Impedance: | 47k Ohms, unbalanced | |
| Output Impedance: | XLR out: 600 Ohms; RCA outs: 470 Ohms | |
| Equivalent Input Noise: | -82dBu @ 0dBu output | |
| Maximum Input: | -30dBu @ 1kHz | |
| Voltage Gain: | +37.8dB | |
| Features | ||
| HPF | ||
| Input Connectors: | RCA | |
| Output Connectors: | RCA, XLR | |
| Extras: | Rumble Filter | |
| General | ||
| Construction: | 14-gauge steel chassis and outer shell | |
| Size (L x W x D): | 5" x 6.25" x 2" (127 x 159 x 51mm) | |
| Weight: | 2.80lbs (1.28 kg) | |
| Power: | +48V phantom or +15VDC/400mA external supply (included) | |
| Conditions: | For use in dry locations only between 5°C and 40°C | |
| Warranty: | Radial 3-year, transferable | |
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