Radial J33 Phono Preamp and Active DI

About: Radial J33 Phono Preamp and Active DI

The Radial J33 is a combination RIAA turntable preamp and active direct box that allows long-play vinyl albums (LP’s) to be played directly through a professional microphone preamp in a mixing console. The J33 is ideally suited for archiving, sampling, scratch performances and DJ mixing when the highest possible sound quality is required.

The Radial J33 is designed for moving-magnetic (MM) cartridges and features a stereo pair of RCA inputs and a choice of RCA stereo line-level outputs (-10dB, hi-Z) or balanced stereo XLR outputs (mic-level, 600Ω). This arrangement makes the J33 incredibly flexible. It can feed a hi-Z input such as a DJ system, and a low-Z input such as a pro-mixing console at the same time. It can be used solely as an RIAA preamp with hi-fi equipment or as an RIAA preamp and direct box combo.

The J33 may be powered with 48V phantom when used with mixing consoles, or with the included power supply when phantom is not available. The J33 is housed in a heavy-duty welded I-beam inner enclosure that makes it impossible to torque the PC board. The outer shell features a book-end design that protects the connectors and switches. Lasts a lifetime and sounds great.

Features

• RIAA EQ curve for proper playback response
• RCA and balanced XLR output options
• Rumble filter stops low-frequency feedback
• Powered by 48V phantom or external supply

Applications

• Designed for moving-magnetic turntable cartridges • Pro DJ touring and night clubs
• Archiving vinyl records
• Recording digital samples from vinyl
• Recording scratch performances

Cool stuff

• Eliminates need for DJ mixer
• RIAA preamp and active DI in one box
• Can be used as hi-fi turntable preamp
• Lets you connect your turntable to anything! • Low-Z out will drive signals 300 feet!
• Ultra-tough construction, lasts a lifetime

Specifications

• Frequency response -  20Hz ~ 20KHz ±3dB
• Total harmonic distortion -  0.005 % @ 1KHz
• RIAA curve
  • +19.5dB @ 20Hz
  • -19.65dB @ 20kHz
  • Reference: 0dB @ 1kHz
• RIAA deviation -  +/- 0.5dB maximum
• Max. phono input level -  50mV @ 1KHz
• High pass filter -  200Hz cut off, -3dB at 100Hz
• Unbalanced outputs -  10kOhm, -10dB line-level
• Balanced outputs -  600Ω, -60dB mic-level
• XLR pin configuration
  • AES standard: pin 1 ground
  • pin 2 hot (+)
  • pin 3 cold (-)
• Power (auto-switching) -  15VDC or 48V phantom
• Size (W x D x H) -  3.25”x 5”x1.75” (83x126x45mm)
• Weight -  1.5 lbs. (.7 kg)