BitMo Triple Bypass for the Blackheart Little Giant BH5H Amp

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This is a mod kit for the Blackheart Little Giant BH5H. This amp is a 5 watt, single-ended, Class A amp sporting a 12AX7 preamp, an EL84 power tube, a full 3-band tone stack, a Pentode / Triode switch and PLENTY of gain (maybe too much). The circuit board was designed as a great platform for modding with beefy components, wide spacing and robust traces. There are both head and combo versions.

The BitMo Triple Bypass kit contains parts and instructions and makes the amp much more versatile by adding 3-way switching between different voicing. The middle position offers a nice balanced tone with a bit more clean headroom. The 2nd position offers a dollop of fatback gain with a chocolaty brown sound. The 3rd position offers a tighter, biting boost good for thinning muddy humbuckers. All 3 voicings are very touch sensitive and great across the full range of the volume control going from warm or sparkly clean to balzout overdrive with lots of interesting shades in between.

The Bypass name comes from the fact that the switch does a partial bypass of some of the amp’s stock components and runs through the BitMo voicing circuits. The tone controls operate slightly differently with each switch position, and the triode switch (which by the way, I would not trade for a standby switch) provides more compressed, tweed-like tone sculpting options.

The modded amp works well with the standard 12AX7 but I think it’s even better with lower gain tubes like a NOS 5751 or a 12AT7. It also loves overdrive and distortion pedals.

The kit includes magnetic stick on labels and drilling template No decals required! You can also mount the switch on the back panel if you prefer.

The BitMo 10-uator Plate also works great with this amp and fits perfectly on the back panel.

Recommend tube upgrades:
Standard: One JJ 12AX7 and one medium bias JJ EL84
Creamy Overdrive Distortion: One Tungsol 12AX7 and one low bias JJ EL84
Note: BitMo kits do not include tubes.

For an idea of how tube changes will affect the amp's sound check out this article at www.gearscore.com.

Warnings, etc:
While these modifications are easy to do and reversible, if you solder them in, you will void your warranty. Tools you will need - screwdriver, soldering iron, rosin core solder, wire stripper, needle nose pliers, drill and bits.

Availability: Usually ships within 24 hours.

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