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J01-CCC-DX

John East J Retro Deluxe Bass Preamp for Jazz Bass Deluxe®

certificate medal bullet iconBUILT WITH HIGHEST QUALITY COMPONENTS

wave form bullet iconGENTLE BUILT IN CONTOUR GIVES IMMEDIATE COLOUR

wrench bullet iconEASY INSTALLATION FOR YOUR DELUXE J BASS

good bullet iconSWEEPABLE MID RANGE

Customer Reviews

Based on 9 reviews
100%
(9)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
D
Darick Lewis
A consistent company

Been buying from them for years and they’ve always had consistent knowledge, fast shipping and wonderful customer service. Consistent A+++++ experiences

S
Stephen Blackwelder
Awesome Pre-Amp

I replaced the stock preamp and controls on my Fender Jazz Bass. It worked great out of the box. I appreciate the prompt shipping. I play on Sundays and my bass went down during a church service. I ordered the replacement from Fat Bass Tone on Monday but arrived on Friday. I installed it on Saturday just in time for my Sunday church service. It was a perfect fit. I was able to use the original battery housing and output Jack hole. Thank you for a great product and prompt shipping.

G
Glenn RICHARDSON
John East J Retro Deluxe Preamp on a Fender Jazz Ultra

Let me start by saying, Huge improvement! John East has given bass players more options in controlling the highs , the mids and lows .Which cuts the mix nicely without appearing to loud or over bearing. You can dial in any tone for whatever genre of music! Shout out to Brian & Max at Fat Bass Tone! You guys are something the bass community needed for a very long time!

H
Herbert Conaway

Outstanding. Just what the Funk Doctor ordered

M
Michael DeSantis
Love the J Retro Deluxe!

Max was able to answer all of my questions about the preamp. He was extremely knowledgeable and offered great customer service. I ordered it shortly after speaking with him to replace the stock electronics in a new bass. The J Retro Deluxe is hands down the best preamp you can put in a Jazz style bass!

empty box iconFREE SHIPPING IN THE USA
configuration iconEXPERT TECHNICAL SUPPORT
checklist iconIN STOCK MEANS IN STOCK

DESCRIPTION

The J-RETRO 01 DELUXE is designed to fit directly into 'jazz' style deluxe basses, without modification to the instrument in most cases. Its high quality circuit uses three stacked and one single knob. Controls and function include an active blend circuit, 3 band equaliser with bass, variable frequency mid, treble plus bright function, and a passive tone, which functions in both active and passive modes.

The active blend circuit prevents the loss associated with many passive basses where, when both pickups are up full, the signal from one pickup feeds into the other and vice versa.

However, a switch is included to allow a passive equal mix of both pickups. A second switch - basic "get-you-out-of-trouble" passive mode is included in case the battery dies in crucial circumstances, and this mode allows some useful settings too.

EASY TO FIT, NO ROUTING OR MODS TO MOST J DELUXE STYLE BASSES.

It can be used in more standard "jazz" style basses, but the jack will need to be fitted to the side of the bass, as is the case with jazz deluxe style basses.

Available in Chrome and Black finishes. We are regularly receiving shipments from East - Contact Us for other finishes.

CONFIGURATION

3 Band -- 4 Knob, 2 Switch:
Volume/Blend Stack -- Treble/Bass Stack -- Mid/Frequency Stack -- Passive Tone -- Active/Passive Switch -- Pickup Switch

NOTE : John East J Retro & J Retro Deluxe preamps use an active blend. In passive mode, the blend pot does not function. Therefore, a player can use the pickup switch to alternate between both pickups on or the bridge pickup on only. For most players, the passive mode is a ‘get out of trouble’ mode for situations such as live gigging where a battery failure occurs. If you are looking for full blend capability in passive mode, we recommend the 2 band John East J Tone preamp.

TECH & SPECS

VOLUME & BLEND  (Knob stack nearest the neck pickup)

VOLUME

The upper knob is the Volume.

This knob has active circuitry after it so that the feed to your amplifier is a low impedance drive.

BLEND & PICKUPS SWITCH

The lower outer knob is the Blend balance for the pickups.

Turn it fully clockwise for the neck pickup alone and fully anti-clockwise for the bridge pickup. The midway position, which has an indent, gives an equal  mix of both pickups.

The balance between the pickups is continuously variable with progressive level compensation towards the single pickup settings.

BASS & TREBLE  (The middle knob stack)

TREBLE (+12dB @ 3 kHz, -12dB @ 1kHz)

The upper knob is the Treble control with boost and cut. The central 'flat' position is indented. The cut settings work on lower frequencies compared to boost to give a deeper sound when the top is rolled off.

BRIGHT (+8dB @ 7kHz)

Pull the Treble knob for the Bright setting.

BASS (+15dB @ 50Hz)

The lower outer knob is the boost only Bass control. The frequency band of boost gets progressively lower as the boost is increased. An indent midway is included to aid the setting of this control.



MID LEVEL & FREQUENCY  (The knob stack nearest the jack)

BOOST/CUT (+/- 12dB)

The upper knob controls the amount of Midboost or cut at frequencies according to the setting of the Frequency knob. The midway indent is the 'flat' position.

FREQUENCY (150Hz - 3kHz)

The lower outer knob is continuously variable and sets the Mid frequencies for boost or cut.

ACTIVE PASSIVE SWITCH  

(By the jack) Towards the jack for active, the opposite for passive.

PASSIVE TONE (Single Knob)

PASSIVE TONE Conventional passive tone which acts directly on the output of each individual pickup. Since pickup signals are separated until they reach the electronic blend stage, a dual pot is required in order that there is an individual passive tone section for each pickup.

POWER

The power is switched on automatically when a mono jack is plugged into the socket.

John East J Retro Deluxe Wiring Diagram

Customer Reviews

Based on 9 reviews
100%
(9)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
D
Darick Lewis
A consistent company

Been buying from them for years and they’ve always had consistent knowledge, fast shipping and wonderful customer service. Consistent A+++++ experiences

S
Stephen Blackwelder
Awesome Pre-Amp

I replaced the stock preamp and controls on my Fender Jazz Bass. It worked great out of the box. I appreciate the prompt shipping. I play on Sundays and my bass went down during a church service. I ordered the replacement from Fat Bass Tone on Monday but arrived on Friday. I installed it on Saturday just in time for my Sunday church service. It was a perfect fit. I was able to use the original battery housing and output Jack hole. Thank you for a great product and prompt shipping.

G
Glenn RICHARDSON
John East J Retro Deluxe Preamp on a Fender Jazz Ultra

Let me start by saying, Huge improvement! John East has given bass players more options in controlling the highs , the mids and lows .Which cuts the mix nicely without appearing to loud or over bearing. You can dial in any tone for whatever genre of music! Shout out to Brian & Max at Fat Bass Tone! You guys are something the bass community needed for a very long time!

H
Herbert Conaway

Outstanding. Just what the Funk Doctor ordered

M
Michael DeSantis
Love the J Retro Deluxe!

Max was able to answer all of my questions about the preamp. He was extremely knowledgeable and offered great customer service. I ordered it shortly after speaking with him to replace the stock electronics in a new bass. The J Retro Deluxe is hands down the best preamp you can put in a Jazz style bass!

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