Epiphone Valve Junior Kits-

Trio  - Almost like a modeling amp but 100% analog tube tone!

My most comprehensive set of mods – combines:

q       Duo Tone with Fat Boost pull switch and

q       3 way Voicing/Gain Switch

A total of 6 unique voicings and gain settings - all the voicings of Spanky, Brat and more.

Duo Control - Tweed Style Tone Control w/ Fat Boost switch

Goes from mellow to bright and doesn't suck the life out of the signal chain. Plus, when you pull the knob out, a healthy dose of Fat Boost is added.

3-Way Voicing/Gain Switch – LOW, MO’ and WHOA!

"Blackface", "British" and "Top Boost" positions. All three positions have distinctively different voicings that respond to your touch and the setting of the volume control on the amp and on the guitar.

Tweaky/Spanky - Celebrate the “less is mo’” philosophy of this great little amp

Great 1st kit for novices! Unlike the other BitMo kits, Tweaky adds no external knobs or switches, no wires, no drilling and no decals. Nothing but amazing TONE! Allows 5 alternate configurations – Spanky (my favorite) Swanky (Blackface), Yankee (Tweed), Cranky (British high-gain), and Skanky (Over the top!). Includes a feature called "Progressive Tone Shaping" (PTS™) that provides a wider tonal range at the turn of the volume control.     

Tone Control  - Classic Tweed Style Tone Control

Makes the amp much more versatile, cuts some of the low-mid mud and allows you to go from a rich mellow tone to a nice clear or biting bright.  It helps match guitars with different pickup types and various speakers. The control can be switched out of the circuit.

Brat  - British Voiced Tone Control with Top Boost / Overdrive pull switch 

Two distinct tone and gain ranges. Easy to install. If you combine the Brat control with the Spanky mods, the EVJ becomes very Vox-like.


 Attenuator Kits-

10-uator  - Get great cranked tone at studio or bedroom levels 

Gives you control of the post-amp speaker volume. Also includes a variable level, speaker-voiced line output so you can plug directly into a mixer for recording or live performance. You can also use the whole amp as a pre-amp into a bigger guitar amp. The 10 watt model can be configured for 4, 8 or 16 ohm operation.

The Plate version mounts on the back of an EVJ head/combo or Blackheart Little Giant.

The external Box version can be used with EVJ, Blackheart, Fender Champ, Champion 600…

10-uator 23  - Higher wattage version  

23 watt versions of the 10-uator (both Plate and Box) for use with Fender Deluxe, Princeton, Vox AC-15, etc. Use with 8 – 16 ohm speakers.

 

 Blackheart Little Giant Kits-

Triple Bypass Switch – 3 new voicings for the Blackheart Little Giant

"Blackface", "British" and "Top Boost" positions. All three positions have distinctively different voicings that respond to your touch and the setting of the volume and tone controls. Also sweetens the treble of the tone stack.

 

 

 Pedal Mod Kits-

Behringer VT911 Tube Overdrive – 2BO  

The 2BO kit adjusts the gain and voicing of this basic tube overdrive pedal and makes it sound like a classic overdriven tube amp. Really nice in front of an EVJ!

Behringer VT999 Tube Monster – 2BM

The 2BM kit adjusts the gain and voicing of this full-featured tube overdrive pedal.

You can go from a clean boost, through classic crunch to a singing overdrive. The modded VT999 adds tube mojo, overdrive, noise gate and full tone stack EQ options to any amp.


 

 

 

BitMo Mods – Features Matrix

 

                                         Epiphone Valve Junior Mod Kits ***

BitMo Kit

Difficulty / est.time

External Controls

Interface points / Voicings

Works with

Trio

Moderate+ 2-3 hours

3-way Voicing switch +

Tone knob w/pull boost

7/6

10-uator

Duo

Moderate 1-2 hours

Tone knob w/pull boost

3/2

Tweaky, V/G Switch,

10-uator

V/G Switch

Moderate 1-2 hours

3-way Voicing switch

2/3

Tone, Brat, Duo,

10-uator

Tweaky

 

Easy / 1 hour

(Many hours of

tweakage fun)

None - no drilling required

 

5/1

5 voice options

Tone, Brat, Duo,

10-uator

Brat

Moderate 1-2 hours

Tone knob w/pull boost

British voicing when pulled

3/2

Tweaky, V/G Switch,

10-uator

                                           Blackheart Little Giant Mod Kits

Triple Bypass

Moderate 1-2 hours

3-way Voicing switch

4/3

6 w/tri/pentode

10-uator

                                                        Attenuator Kits

10-uator

10-uator 23

Moderate 1-2 hours

Speaker Attenuation knob

Line Out Level knob

None - no circuit mods

Low-wattage amps

Mid-wattage amps

                                                         Pedal Mod Kits

2BO

Easy / 1/2 hour

None

4

All amps

2BM

Easy / 1/2 hour

None

3

All amps

 

***  All EVJ kits include instructions for the Version 2 and 3. ***

(Version 3 of these amps can be identified from the outside by having no I/O on the power switch

and from the inside by having a black circuit board. Previous versions had green boards.)