Tung,
Was the ver.3 V.Jr. noticeably louder than the BH's?
I was surprised at how loud my ver. 2 V. Jr head was when I bought it.
After doing the gold mods it was seriously loud and crunchy.
I played a Fender 600 at full volume and, while it sounded good, it paled in comparison to the volume and crunch of the V. Jr., IMO.
Perhaps the Blackheart shunts some of the input signal to ground, reducing the gain?
Guitars
Wilburn Versatare, '52 FrankenTele(Fender licensed parts), Fender USA Roadhouse Strat, Fender USA Standard B-bender Telecaster, Agile AL 3000 w/ WCR pickups, Ibanez MIJ V300 Acoustic, Squier Precision Bass,
Amps
Ceriatone Overtone Special, Musicman 212 Sixty-Five, Fender Blues Jr., Peavey Classic 30, Fender Super Reverb, Traynor YCV-40 WR Anniversary w/ matching 1x12 ext. cab, Epiphone SoCal 50w head w/ matching 4x12 cab (Lady Luck speakers), Avatar 2x12 semi-open back cab w/ Celestion speakers
Pedals
Digitech Bad Monkey, Digitech Jamman, DVM's ZYS, Goodrich volume pedal