INTRODUCTION
Since the advent  of  the  compact  disc,  the use of  long-playing 
records  has  become  so  sparse  that  it  has  become  difficult  to 
find  a  hi-fi  receiver  that  is  equipped  with  a  phono  input.  With 
literally  millions  of  albums  floating  around  the  world,  a  need 
has emerged to capture these recordings and transfer them to 
today’s digital formats.
The Radial J33 provides a solution with a simple device that is 
‘plug & play’ easy-to-use and built to Radial’s professional stan-
dards for  sound  quality  and durability.  Equipped with  an  RIAA 
preamp and choice of -10dB consumer line-level and pro 600Ω 
mic-level outputs, the J33 is right at home in the studio, on the 
stage and in the DJ booth.
For the enterprising studio, this opens the door to a new busi-
ness  opportunity:  a  phono  to  CD  transfer  service  that  offers 
families a way  to  enjoy  their favorite LP’s in their cars and on 
their new surround sound systems. The Radial J33 also boasts 
other  advantages:  for  the  broadcast  station  and  museum,  old 
record  collections  can  now  be  easily  archived  by  transferring 
phono recordings to digital media.  With the plethora of digital 
‘noise-eliminating’ software, less than ideal recordings can now 
be updated to approach today’s signal-to-noise expectations. 
For the recording  studio,  the  emergence of ‘scratching’ in  hip-
hop, rap and pop music opens the door to better recordings and 
more creativity by allowing a turntable to connect through high-
end processing, opening  up  opportunities  for re-recording and 
greater artistic freedom.  
FEATURE SET
The Radial J33 is a combination RIAA phono preamp and active  
DI that allows you to connect a conventional turntable with mag-
netic cartridge to a recording system, hi-fi or PA system.
The  J33  features  a  pair  of  stereo  inputs  for  the  turntable.  A 
ground lug is provided to properly ground the turntable to avoid 
system noise. This signal then feeds the preamp that boosts the 
phono signal while introducing the RIAA equalization curve. 
Next to the  turntable  inputs  are  a  series of unbalanced  -10dB 
consumer line-level outputs. These include a stereo set of RCA 
connectors that can connect to the auxiliary or CD inputs on a 
typical  hi-fi  receiver;  a  1/8”  (3.5mm)  stereo  mini-jack  that  can 
connect to an MP3 player or computer sound card and a ¼” TRS 
connector that can be split using an insert cable to a pair of 1/4"  
line inputs on a PA or DJ mixer. 
The J33 is also equipped with a low-frequency rumble filter. This 
gently rolls off the bass to reduce the low frequency rumble and 
resonant feedback that can occur when spinning records in high 
volume environments such as on stage or in nightclubs. 
True to the Music
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J33 User Guide
Radial Engineering